КОДИРОВАНИЕ, ДЕКОДИРОВАНИЕ И ПРЕДСТАВЛЕНИЕ ИЗОБРАЖЕНИЙ С РАСШИРЕННЫМ ДИНАМИЧЕСКИМ ДИАПАЗОНОМ

Изобретение относится к устройствам обработки изображения. Технический результат заключается в повышении достоверности отображения сцен реального мира. Такой результат достигается тем, что значения отношения яркости и остаточные значения в цветовых каналах цветового пространства создаются на основе отдельных пикселей на изображении с расширенным динамическим диапазоном (HDR) и производного тонально отображенного (ТМ) изображения, которое содержит одно или несколько цветовых изменений, которые не будут восстанавливаться из ТМ изображения изображением отношения яркости. ТМ изображение с данными восстановления HDR, полученное из значений отношения яркости и остаточных значений цветового канала, может выводиться в файл изображения в устройстве, расположенном ниже по схеме процесса, например, для декодирования, отображения и/или хранения. Файл изображения может декодироваться для создания восстановленного изображения HDR без цветовых изменений. 18 н. и 31 з.п. ф-лы, 9 ил.

МНОГОЭКРАННОЕ УСТРОЙСТВО ОТОБРАЖЕНИЯ

Изобретение относится к многоэкранному устройству отображения. Техническим результатом является обеспечение управления источником света, подходящего для режима рассчитанной целевой яркости. Микрокомпьютер рассчитывает целевую яркость для каждого режима яркости. Каждое проекционное устройство отображения видеоизображений задает целевое значение тока управления, соответствующее рассчитанной целевой яркости, соответствующей режиму яркости, установленному для проекционного устройства отображения видеоизображений. Каждое проекционное устройство отображения видеоизображений подает ток, указывающий заданное значение тока управления, в источник света проекционного устройства отображения видеоизображений. 5 з.п. ф-лы, 13 ил.

Schaltungsanordnung zum Ausdehnen eines Steuersignals bei Videosignalverarbeitung

REDUKTION DES LEUCHTDICHTEÜBERSPRECHENS

Sensormodul, Verfahren zum Ermitteln einer Helligkeit und/oder einer Farbe einer elektromagnetischen Strahlung und Verfahren zum Herstellen eines Sensormoduls

Die Erfindung betrifft ein Sensormodul (100) mit zumindest einem Helligkeitssensorelement (102) zum Erfassen einer Helligkeit einer breitbandigen elektromagnetischen Strahlung und zumindest einem Farbsensorfeld (104), das zumindest ein Farbsensorelement (106) zum Erfassen einer Farbe der elektromagnetischen Strahlung aufweist. Das Helligkeitssensorelement (102) weist eine größere Sensorfläche als das Farbsensorfeld (104) auf.

Bildverarbeitungsvorrichtung, Steuerverfahren dafür und Programm

Ein Bildverarbeitungsverfahren und eine -vorrichtung zum Durchführen einer Wiedergabeverarbeitung einer RAW-Filmdatei, in der Informationen in Bezug auf einen Entwicklungsparameter in einem Rahmen gespeichert sind. Das Verfahren weist auf und die Vorrichtung ist konfiguriert zum Durchführen eines Verfahrens mit Ausführen einer Verarbeitung zum Bestimmen eines Entwicklungsparameters, der bei einer Entwicklungsverarbeitung eines Zielwiedergaberahmens innerhalb der RAW-Filmdatei zu verwenden ist, basierend auf einer Differenz zwischen einem Entwicklungsparameter für den Zielwiedergaberahmen und einem Entwicklungsparameter, der bei einer Entwicklungsverarbeitung eines vorausgehenden Rahmens verwendet ist. Durchführen einer Entwicklungsverarbeitung auf einem RAW-Bild des Zielwiedergaberahmens gemäß dem durch die Verarbeitungseinrichtung bestimmten Entwicklungsparameter und Ausgeben eines bei der Entwicklungsverarbeitung erhaltenen Bilds. Ferner, in einem Fall, in dem eine Wiedergabestartposition ...

VERBESSERTES AUFZEICHNUNGS- UND WIEDERGABESYSTEM FUER DIGITALISIERTE VIDEOSIGNALE

ENTZERRERSCHALTUNG ZUR BESEITIGUNG EINER DIFFERENTIELLEN PHASE DER IN FARBFERNSEHSIGNALEN ENTHALTENEN FARBTRAEGERSCHWINGUNG

Image signal processing method and apparatus

AN APPARATUS FOR PROCESSING VIDEO SIGNALS

Television signal processing

IMAGE SIGNAL PROCESSING CIRCUIT

SIGNAL SPREADER

Decoding colour television signals

In a PAL colour television decoder, residual colour components in the luminance channel (16) are removed by means of a burst- responsive circuit (54) which controls a modifying element, e.g. a subtractor (50) which subtracts modulated 52 chrominance components (Fig. 1), or a variable-depth subcarrier-frequency notch flter (68, Fig. 3). The burst- responsive circuit (54) is preferably sensitive to the residual burst from averager (46) (Fig. 1), but can be responsive to the input burst as detected by the burst locked system (28) (Fig. 2). ...

DECODING COLOUR TELEVISION SIGNALS

Image signal processing method and device

The purpose of the invention is to achieve image signal processing which can improve the color display of image signals converted from YCrCb 4:2:2 to YCrCb 4:2:0. The image signal processing device (500) is provided with: a buffer (520) for holding YCrCb 4:2:2 image signals inputted by an image signal input unit (510); a frame and line identification unit (530) which determines, on the basis of frame and line information for YCrCb 4:2:2 image signals inputted by the image signal input unit (510), whether the line that these inputted YCrCb 4:2:2 image signals correspond to is the first or second line of a pair of adjacent lines; and a Cr and Cb data correction unit (540). When the frame and line identification (530) determines that the line is the second line, the Cr and Cb data correction unit (540) reads from the buffer (520) the YCrCb 4:2:2 image signals for each pixel on the first line at the same horizontal positions as the horizontal positions of the pixels on the second line, and ...

IMAGE MOTION DETECTOR

SIGNAL SPREADER

CHROMINANCE SIGNAL ATTENUATION

... 1,244,825. Colour television. FERNSEH G.m.b.H. 28 Jan., 1970 [22 Feb., 1969], No. 4076/70. Heading H4F. To prevent a disturbing pattern being produced by the chrominance signal upon the reproduction of a colour television signal, the chrominance signal in the luminance channel is attenuated by an extent which is reduced with reducing amplitude of the chrominance signal. Preferably the chrominance signal is attenuated to a constant amplitude level e.g 20% of the maximum amplitude, so that in those parts of the picture having low colour saturation where the amplitude of the chrominance signal is less than this constant amplitude no attenuation is effected. Therefore in the weakly saturated parts of the picture the full frequency spectrum of the luminance signal is available and sudden changes of the luminance are faithfully reproduced without overshoot. In a first embodiment, Fig. 1, the colour television signal is fed via a delay device 2 (transit time equalizer) to a colour sub-carrier ...

Non-linear processing of video image vertical detail information

In a color television receiver including a comb filter for separating luminance and chrominance components of a color television signal, a network is included for selectively restoring, enhancing and paring vertical image detail to preserve and enhance vertical resolution in the luminance content of a displayed image. The comb filter provides a combed luminance signal output from which vertical detail signal information has been unavoidably deleted, and a combed chrominance signal output including signal frequency components representative of the deleted detail signal, which are selectively extracted from the combed chrominance signal. Low level detail signals are restored to the combed luminance signal via a first signal processing network which exhibits a prescribed signal restoration gain. The detail signal is also combined with the combed luminance signal via a second signal processing network which cores (removes) low level detail signals including noise, enhances moderate level detail ...

SCHALTUNG ZUR BEEINFLUSSUNG DES FREQUENZGANGES VON FERNSEHSIGNALEN

SCHALTUNGSANORDNUNG ZUR AUTOMATISCHEN BANDBREITEN-REGELUNG DES LEUCHTDICHTEKANALS IN EINEM FARBFERNSEHEMPFAENGER

PROCEDURE AND EQUIPMENT FOR THE COMPENSATION OF THE IMAGE QUALITY OF A PROJECTION ANNOUNCEMENT

SWITCHING CONFIGURATION TO VERBESSERUND OF THE CAM SHAPE OF A COLOR TELEVISION SIGNAL

VIDEO COMB FILTER

TELEVISION SET.

TELEVISION SET.

PROCEDURE FOR THE PRODUCTION OF A DELAY AS WELL AS A CIRCUIT FOR THE EXECUTION OF THE PROCEDURE.

SWITCHING CONFIGURATION FOR A SYSTEM FOR THE PROCESSING A FARBBILD OF REPRESENTING VIDEO SIGNAL

VIDEO PROCESSING SYSTEM

ANORDUNG TO THE REDUCTION OF NOISE AND COLOR CROSS MODULATION WITH TELEVISION SIGNALS.

VERTICAL CORRELATION DETECTION

Video processing system

VIDEO SIGNAL TRANSLATING CIRCUIT

Method of processing a digital image, device, terminal equipment and computer program associated therewith

The invention relates to a method for processing at least one digital image with a view to its rendition on a display device, said image comprising image elements, an image element being associated with colour information represented in a first colorimetric space comprising a luminance component and chrominance components, said luminance component having a value included in a first predetermined interval of values, said display device being able to render values of luminance components of the image elements included in a second predetermined interval of values, of greater length than that of the first interval, said method comprising the steps of: Determination (El) of an item of information representative of an overall brightness level of the image perceived by an observer, on the basis of the values of the first luminance component of the elements of the image; Calculation (E2) of an expansion exponent (y) as a function of the overall brightness level item of information determined; Transformation ...

Signal conversion apparatus and method

CIRCUIT FOR IMPROVING THE FREQUENCY CHARACTERISTIC OF A COLOR TELEVISION SIGNAL

A circuit system for improving the frequency characteristic of a color television signal having a variable delay for delaying a modulated chrominance signal within a predetermined time range by an applied control signal, control signal generator for producing a delay time control signal in response to a high frequency component of a luminance signal, and applying the delay time control signal to the variable delay to vary the delay time by the latter so as to sharpen the rise and fall portions of the modulated chrominance signal derived therefrom, the modulated chrominance signal thus obtained being demodulated to reproduce a color picture in cooperation with the luminance signal.

ENCODING, DECODING, AND REPRESENTING HIGH DYNAMIC RANGE IMAGES

Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations ...

TELEVISION RECEIVER WITH AUXILLIARY INPUT CONNECTOR FOR VIDEO SIGNALS OF A SEPARATED Y-C FORMAT

An auxiliary video input terminal (S-terminal) couples luminance amd chrominance input signals to respective inputs of peaking circuits in the display processor of a receiver. The chrominance input signal is subjected to pre-distortion (de-peaking) to correct for sideband amplitude distortion in the chrominance peaking filter of the receiver thereby preventing color distortion in displayed images. The luminance signal is subjected to additional peaking at a frequency greater than the characteristic peaking frequency of the luminance peaking filter thereby enhancing the sharpness of wideband luminance input signals displayed by the receiver.

ADAPTIVE MULTISTANDARD VIDEO COMB FILTER

RCA 85,616A A multimode comb filter for comb filtering, e.g., NTSC and/or PAL video signals includes delay means for concurrently providing video signals representing first, second and third adjacent horizontal lines. First and second combining means coupled to the delay means provide alternate l-H comb filtered signals in both the NTSC and PAL modes. Control circuitry coupled to the delay means generates a control signal for adaptively selecting the one of the alternate l-H comb filtered signals or appropriate proportions of both alternate l-H comb filtered signals to form an output comb filtered signal. In the NTSC mode the control circuitry generates the control signal from sums of vertically aligned pairs of samples from said first and second lines and from said second and third lines. In the PAL mode the control signal is generated from alternating sums and differences of vertically aligned pairs of samples from said first and second lines and from said second and third lines.

CONTROL SIGNAL SPREADER

Apparatus for spreading a control signal comprised of widening circuits for extending the control signal horizontally and vertically, a line signal spreading circuit for generating a ramp of increasing values during a given interval at the beginning of each extended control signal, maintaining the maximum value of the ramp for the remainder of the extended control signals and generating a ramp of decreasing values at the end of each extended control signal and also including a circuit for combining the signal values at corresponding points along a plurality of lines as the lines are scanned.

AUTO-TUNING CIRCUIT FOR AN ACTIVE FILTER USED IN VIDEO SIGNAL PROCESSING

Conversion method and conversion device

Image processing apparatus and image processing method thereof

Circuit de compensation du retard du signal de luminosité de télévision multimode

L'invention concerne un circuit de compensation du retard d'un signal de luminosité. Elle se rapporte à un circuit de compensation qui comprend un filtre 6 qui sépare le signal de chrominance qui est analysé dans un circuit 7 permettant la sélection du système d'émission. En fonction de cette sélection, un signal de commande a, b, cest transmis à un circuit 8 qui crée une tension correspondante de commande utilisée pour la commande d'un interrupteur SW2, SW3, SW4 qui met en circuit un élément à retard 1, 2, 3 correspondant au système choisi. Le signal vidéo passe aussi dans un circuit 9 qui retire le signal de chrominance et forme le signal de luminosité Application aux appareils de réception de télévision multimode.

AUTOMATIC COLOR AND ADJUSTING DEVICE OF the STRESSING Of a VIDEO SIGNAL

CIRCUIT DE TRANSLATION DE SIGNAUX VIDEO

L'INVENTION CONCERNE UN ETAGE DE TRANSLATION DE SIGNAUX VIDEO. SELON L'INVENTION, UN TRANSISTOR AMPLIFICATEUR 44 PRODUIT DES VERSIONS RESPECTIVES DES SIGNAUX VIDEO D'ENTREE A TRAVERS DES RESISTANCES DE CHARGE 46, 45 DANS SES CIRCUITS DE COLLECTEUR ET D'EMETTEUR; UN CONDENSATEUR 47 RELIE LE COLLECTEUR A LA BORNE DE SORTIE 0 DE L'ETAGE, ET UNE COMBINAISON EN PARALLELE D'UNE INDUCTANCE 48 ET D'UNE RESISTANCE 49 RELIE L'EMETTEUR A LA BORNE DE SORTIE. LES VALEURS DES PARAMETRES SONT CHOISIES POUR FORCER L'ETAGE A PRODUIRE UNE COURBE RETARDFREQUENCE COMPENSANT UNE DISTORSION DU RETARD INTRODUITE PAR L'AMPLIFICATEUR DE FREQUENCE INTERMEDIAIRE DU RECEPTEUR. L'UTILISATION D'UNE RESISTANCE VARIABLE COMME RESISTANCE DE CHARGE DE COLLECTEUR FACILITE L'AJUSTEMENT DE L'ACCENTUATION DE LA CARACTERISTIQUE AMPLITUDEFREQUENCE DU CANAL DE LUMINANCE TOUT EN MAINTENANT L'EFFET DE COMPENSATION DE DISTORSION DU RETARD. L'INVENTION S'APPLIQUE NOTAMMENT AUX TELEVISEURS EN COULEURS.

PREDICTIVE?RETROSPECTIVE METHOD FOR BANDWIDTH IMPROVEMENT

AUTOMATIC ADJUSTING DEVICE OF FREQUENCY RESPONSE OF the CHANNEL OF BRIGHTNESS Of a SYSTEM OF TELEVISION

AUTOMATIC COLOR AND ADJUSTING DEVICE OF the STRESSING Of a VIDEO SIGNAL

화상 처리 장치, 화상 처리 방법, 화상 처리 프로그램 및 기록 매체

... 본 발명은 우수한 노이즈 제거 효과를 얻는 화상 처리 장치, 화상 처리 방법, 화상 처리 프로그램 및 기록 매체를 제공한다. 화상 처리 장치는 입력 화상에 대해 노이즈를 제거하는 처리를 행하는 것이다. 화상 처리 장치는 처리의 대상으로 되는 노이즈 처리 대상 화소가 가지는 제 1 대상 화소값 및 노이즈 처리 대상 화소의 주변에서의 복수의 참조 화소가 가지는 참조 화소값을 이용하여, 제 1 필터 계수 및 제 2 필터 계수를 설정하는 필터 설정부와, 참조 화소값의 휘도 성분을 제 1 필터 계수로 가중치 부여 가산함과 아울러, 참조 화소값의 색차 성분을 제 2 필터 계수로 가중치 부여 가산하여 수정 화소값을 산출하고, 수정 화소값을 이용해서 노이즈 처리 대상 화소의 노이즈를 제거하는 노이즈 제거부를 가진다. 입력 화상은 베이어 패턴 형식으로 화소값이 유지되어 있다.

RADIO FREQUENCY MODULATOR HAVING C/L DELAY COMPENSATING FUNCTION AND SET TOP BOX USING THE SAME

PURPOSE: A radio frequency modulator having a C/L delay compensating function and a set-top box using the same are provided to satisfy a C/L delay standard in an RF modulator element without installing an extra C/L delay compensating element. CONSTITUTION: A radio frequency modulator is made of a C/L(Chrominance/Luminance) delay compensating unit(41a) and a radio frequency modulating unit(41b) on a single board to execute C/L delay compensating and modulating functions at the same time in one module. The C/L delay compensating unit outputs a video signal made of a luminance signal and a chrominance signal after delaying the luminance signal 170nsec by contrast with the chrominance signal. A modulating unit modulates the video signal output from the C/L delay compensating unit into a radio frequency signal of a set broadcasting channel. © KIPO 2003 ...

화상 처리 장치, 표시 장치와 화상 처리 방법 및 화상 처리용 프로그램

... 표시해야 할 화상 자체의 특성이나 그것을 표시시키는 유저의 기호 등에 합치된 형태로, 유해한 블루 라이트를 저감해서 유저의 눈 보호를 도모하는 것이 가능한 화상 처리 장치를 제공한다. 디스플레이(8)에 표시해야 할 화상에 상당하는 화상 정보 Sin을 취득하는 블루 라이트 저감 제어부(3)와, 취득한 화상 정보 Sin에서의 청색 성분에 상당하는 휘도의 저감률이, 당해 화상 정보 Sin에서의 다른 색 성분에 상당하는 휘도의 저감률 이상이 되도록, 적어도 청색 성분에 상당하는 상기 휘도를 저감해서 갱신 화상 정보 Sbc를 생성하고, 디스플레이(8)로 출력하여 표시시키는 화소값 갱신부(6)를 구비한다.

COLOR ERROR CORRECTION APPARATUS AND A COLOR ERROR CORRECTION METHOD, PARTICULARLY WITH REGARD TO CORRECTLY DETECTING A COLOR ERROR BY USING A RELATION BETWEEN A DIFFERENCE VALUE OF CHROMINANCE SIGNALS AND A DIFFERENCE VALUE OF LUMINANCE SIGNALS IN AN EDGE REGION OF VIDEO

PURPOSE: A color error correction apparatus and a color error correction method are provided to correct a color error by detecting the color error and adaptively performing chroma filtering of input video. CONSTITUTION: A color error detection unit(100) detects whether a color error exists in an edge region of input video based on difference between interlaced horizontal lines and difference between continuous horizontal lines in a luminance signal and a chrominance signal which are located at the edge region. A correction unit(300) performs chroma filtering of the input video to correct the color error if it exists in the edge region. A control unit(200) gets a corrected chrominance signal to be outputted if the color error exists therein, and forces an inputted chrominance signal to be outputted if the color error does not exist therein. © KIPO 2007 ...

SYSTEM, APPARATUS AND METHODS FOR MAPPING BETWEEN VIDEO RANGES OF IMAGE DATA AND DISPLAY

Systems, apparatus and methods are provided to map a video range of image data to the video range of a display. Embodiments apply a weighted combination of values in input image data streams to generate image data having a range which matches the display capabilities. The weighted combination may be determined based on relative capabilities of the display and input image data. The video range of the image data and display may be a range of colours (gamut) and/or luminance (dynamic range).

LIGHT SENSITIVE, LOW HEIGHT, AND HIGH DYNAMIC RANGE CAMERA

A user device includes a dual array camera in which a first camera includes a first image sensor without a color filter array to capture luminance, and a second camera includes a second image sensor with a color filter array to capture chrominance.

METHOD AND APPARATUS FOR PROVIDING A CONTENT CONTROL SIGNAL VIA COLOR BURST PHASE MODIFICATIONS

The "color stripe" process is well known in the video field for preventing copying by analog video tape recorders of video content, and operates by altering the phase of a portion of the video signal color burst. Here, a weakened version of the color stripe process is employed in a video signal whereby the color burst phase alterations are reduced or attenuated so there is no copy prevention effect on a typical video tape recorder. However the weakened color stripe process is still sufficient to be detectable by a suitable detector located in a compliant device, so the detected presence of the color stripe serves as an encoded indication of copy control or other content control for the video signal by the compliant device.

SYSTEM FOR SIGNAL PROCESSING THE DYNAMIC RANGE AND CONTRAST OF ELECTRONIC IMAGE BRIGHTNESS WITH RELATED COLOR MODIFICATIONS

A dynamic range and contrast modification method for electronic images, and digital and analogue implementations are disclosed. Dynamic range changes are accomplished by making linear and nonlinear modifications to the low frequency component (YL1, LL1, YAL1). Contrast changes are accomplished by making cross dependent, linear, and nonlinear modifications to the high frequency component (YHP1, YHN1, LHP1, LHN1, YAHP1, YAHN1). Cross dependent modifications are modifications that depend upon the changes to the low frequency component. Modifications are achieved using processor elements that implement mathematical operations. An automatic gain control, AGC, is used to control the low frequency component modification for some embodiments.

Chrominance smoothing

A method for reducing chrominance entropy in a digital color image. This method is practiced in relation to pixels in the two chrominance channels in a luminance-chrominance-chrominance representation of the image. The method involves shifting the chrominance values of selected low-luminance or high-luminance pixels toward (or to) another chrominance value which will result in a net chrominance entropy reduction in the subject channel.

Video signal processor processing color signals whose bands are limited

A video signal processor is provided to receive a luminance signal, a color-difference signal, and a color signal. The processor comprises a circuit for calculating a low-frequency component of the luminance signal, a circuit for calculating a low-frequency component of the color-difference signal, and a circuit for extracting a high-frequency component of the color signal. The processor also comprises a division circuit, a multiplication circuit, and an addition circuit. In the division circuit, the low-frequency component of the color-difference signal is divided by the low-frequency component of the luminance signal, and in the multiplication circuit, an output signal from the division circuit is multiplied by the high-frequency component of the signal extracted, a multiplied signal being outputted as a correction signal for the color signal. In the addition circuit, the correction signal is added to the color signal.

Image signal processing apparatus

An image signal processor generates color difference output signals from color component signals representative of image data. The image signal processor includes multiple color calculators that generate multiple sets of primary color signals from the color component signals. Multiple color difference calculators connected to the color calculators generate multiple sets of color difference signals using the respective sets of primary color signals. A synthesizing circuit combines the multiple sets of color difference signals using a predefined ratio to generate the color difference output signals. By generating multiple sets of signals, errors due to noise can be filtered and higher quality images produced.

Method and apparatus for removing color noise of image signal

A method and apparatus remove color noise of an image signal in which a distortion of a YCbCr color space caused by noise is corrected using correlations between color channels in the YCbCr color space of low frequency (LF) and high frequency (HF) components of an image signal while maintaining the HF component. The apparatus includes: a separator separating the image signal including a luminance signal and a chrominance signal into an LF component and an HF component; an LF noise remover removing noise of the LF component from the image signal; an HF noise remover applying a linear variation rate of the chrominance signal with regard to the luminance signal of the noiseless LF component to the HF component separated from the image signal and generating a new HF component; and a combiner combining the noiseless LF component and the new HF component.

Image processing apparatus, image processing method, and program

An apparatus and a method that decrease a banding phenomenon in a subsampled image and achieve high image quality are provided. A subsampled image obtained by copying an adjacent pixel value to a pixel value thinning position is accepted as an input image; a correction target signal global gain is calculated as a ratio between a slope of a correction target signal and a slope of a luminance signal of a global region made up of a plurality of consecutive pixels including a pixel position of the correction target pixel of the input image; a luminance local slope is calculated as a slope of the luminance signal of a local region which is a region within the global region, including the pixel position of the correction target pixel of the input image and smaller than the global region; and a corrected pixel value of the correction target pixel is calculated.

Solid-state imaging device, method for processing signal of solid-state imaging device, and imaging apparatus

A solid-state imaging device includes a color filter unit disposed on a pixel array unit including pixels two-dimensionally arranged in a matrix and a conversion processing unit disposed on a substrate having the pixel array unit thereon. The color filter unit has a color arrangement in which a color serving as a primary component of a luminance signal is arranged in a checkerboard pattern and a plurality of colors serving as color information components are arranged in the other area of the checkerboard pattern. The conversion processing unit converts signals that are output from the pixels of the pixel array unit and that correspond to the color arrangement of the color filter unit into signals that correspond to a Bayer arrangement and outputs the converted signals.

Image Signal Processing Method and Apparatus

The present invention enables an image signal processing that can improve color representation of an image signal converted from YCrCb 4:2:2 format to YCrCb 4:2:0 format. An image signal processing apparatus 500 includes a buffer 520 for retaining YCrCb 4:2:2 image signals captured by an image signal input 510 , a frame and line recognizer 530 for determining whether the line from which the YCrCb 4:2:2 image signals are captured is a first line or a second line of an adjacent line pair based on frame and line information on the YCrCb 4:2:2 image signals captured by the image signal input 510 , and a Cr and Cb data corrector 540 for, if the frame and line recognizer 530 determines that the line is the second line, reading YCrCb 4:2:2 image signals for the pixels in the first line at the same horizontal positions as the pixels in the second line from the buffer 520 and correcting Cr and Cb data on the YCrCb 4:2:2 image signals for the pixels at least in the first line of the first and second lines of the line pair based on Cr and Cb data on the captured YCrCb 4:2:2 image signals for the pixels in the second line.

Image processing apparatus and image processing method

An image processing apparatus and a method thereof are provided. The image processing apparatus including a signal input unit to which an analog image signal is inputted, includes a first conversion unit for converting the analog image signal inputted through the signal input unit into a first digital image signal, a calculating unit for calculating a gray scale mean for an image by analyzing a brightness signal of the first digital image signal outputted from the first conversion unit and outputting a gray scale mean signal corresponding to the calculated gray scale mean, at least one second conversion unit for converting a portion of the analog image signal into a second digital image signal based on the gray scale mean signal, and a combining unit for combining the first digital image signal and the second digital image signal based on the gray scale mean signal. Accordingly, an improved gray scale representation signal can be provided by performing an adaptive process to convert an ...

Image processing apparatus and method, and imaging apparatus

An image processing apparatus obtains a visible light image and an infrared light image, and generates a color component of a composite image using a color component of the visible light image, and generates a luminance component of the composite image using luminance components of the infrared light image and the visible light image. The image processing apparatus corrects the color component or the luminance component of the composite image, using a correction coefficient determined based on the color component of the visible light image.

GAMUT MAPPING FOR HDR (DE)CODING

To enable good quality HDR image decoding, as corresponding SDR images which are typically defined in a narrower Rec. 709 gamut, the inventor found a pragmatic method of converting a high dynamic range image (HDR 2020) comprising a pixel having a first color (C in) having a first color saturation, into a standard dynamic range image (SDR 709) having a peak luminance of 100 nit, in which that pixel has a second color (C out) having a second color saturation which is lower than the first color saturation, the converting comprising: performing a color space conversion (601) comprising applying a color matrix which maps a first RGB representation of the first color defined according to first red, green and blue primaries to a second RGB representation (RGB sec) of that pixel color according to second RGB primaries, yielding an intermediate image (HDR IM); applying a reversible gamut mapping to the second RGB representation, yielding a mapped color (C map); and applying a luminance mapping ( ...

PICTURE ADJUSTING METHOD AND DISPLAY SYSTEM

A picture adjusting method includes steps of measuring a plurality of first original parameters in a first picture and measuring a plurality of second original parameters in a second picture for a plurality of color patterns; calculating a first gain factor according to the first original parameters and the second original parameters of at least one of the color patterns except a black pattern; subtracting a product of the first original parameters of the black pattern and the first gain factor from the second original parameters of the black pattern to obtain a plurality of first offset values; adding the first offset values to the first original parameters of each color pattern to obtain a plurality of first updated parameters in the first picture; and multiplying the first updated parameters by a second gain factor to obtain a plurality of first adjusted parameters in the first picture.

TRANSMISSION DEVICE, TRANSMISSION METHOD, RECEPTION DEVICE, AND RECEPTION METHOD

In a case where a plurality of transmission video data having predetermined opto-electrical transfer characteristics are switched therebetween and transmitted, processes for obtaining image data for display from the transmission video data are achieved to be appropriately performed at a receiver side. 1. A transmission device comprising:an encoding unit configured to encode transmission video data obtained by switching between a plurality of kinds of transmission video data having predetermined opto-electrical transfer characteristics to obtain a video stream;a transmission unit configured to transmit a container in a predetermined format containing the video stream; andan information insertion unit configured to insert, into the container, identification information representing a kind of a transmission video data in the video stream contained in the container, such that the identification information indicates the kind of transmission video data resulting from switching, from a timing a predetermined amount of time or longer before a timing of the switching.2. The transmission device according to claim 1 , wherein the plurality of kinds of transmission video data include:first transmission video data having a standard dynamic range opto-electrical transfer characteristic, the first transmission video data being obtained by performing opto-electrical conversion with the standard dynamic range opto-electrical transfer characteristic on standard dynamic range video data; andsecond transmission video data having a high dynamic range opto-electrical transfer characteristic, the second transmission video data being obtained by performing opto-electrical conversion with the high dynamic range opto-electrical transfer characteristic on high dynamic range video data.3. The transmission device according to claim 1 , wherein the plurality of kinds of transmission video data include:first transmission video data having a high dynamic range opto-electrical transfer ...

IMAGE PROCESSING APPARATUS

An image processing apparatus includes: an acquisition unit that acquires image data represented by a color included in a first color gamut; and a conversion unit configured to convert colors of pixels of the image data into colors included in a second color gamut, wherein the conversion unit converts the color of the pixel, a brightness of which is included in a first brightness range, of the image data by a first conversion process, and converts the color of the pixel, the brightness of which is included in a second brightness range different from the first brightness range, of the first image data by a second conversion process.

OBSERVATION APPARATUS AND METHOD OF CONTROLLING OBSERVATION APPARATUS

... [Object] To provide an observation apparatus capable of capturing an observation image having appropriate color discriminability regardless of color of an observation target and a method of controlling the observation apparatus. [Solution] The observation apparatus includes: a plurality of light sources configured to emit light different in wavelength spectrum; an optical system configured to emit observation light obtained by combining respective beams of light emitted from the plurality of light sources to an observation target; an image generation unit configured to generate an observation image on the basis of light from the observation target; a light quantity ratio calculation processing unit configured to determine a light quantity ratio of each of the plurality of light sources on the basis of information related to a color of the generated observation image; and a controller configured to control the plurality of light sources on the basis of the determined light quantity ratio ...

IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD

According to one embodiment, an image processing device includes a luminance acquiring unit and a local tone-mapping unit. The luminance acquiring unit acquires a luminance signal of a target pixel in an image by performing filter processing on an image signal. The luminance acquiring unit generates a luminance signal by blending a first luminance-filter result obtained by a first luminance filter and a second luminance-filter result obtained by a second luminance filter. The local tone-mapping unit performs local tone mapping of the luminance signal. 1. An image processing device comprising:a luminance acquiring unit that acquires a luminance signal of a target pixel in an image by performing filter processing on an image signal, the luminance acquiring unit generating the luminance signal by blending a first luminance-filter result obtained by a first luminance filter and a second luminance-filter result obtained by a second luminance filter; anda local tone-mapping unit that performs local tone mapping of the luminance signal.2. The image processing device according to claim 1 , wherein the luminance acquiring unit adjusts a ratio of blending the first luminance-filter result and the second luminance-filter result in accordance with a result of evaluation of a contrast in a region of the image claim 1 , including the target pixel.3. The image processing device according to claim 1 , wherein the first luminance filter and the second luminance filter are different from each other in transfer characteristics with respect to a change of a luminance value.4. The image processing device according to claim 2 , wherein the luminance acquiring unit uses a result of binning processing on the image signal in an operation for evaluating the contrast.5. The image processing device according to claim 1 , wherein the local tone-mapping unit blends a first mapping result and a second mapping result claim 1 ,the first mapping result is a conversion result of the luminance signal ...

Enhanced color consistency for imaging

Devices, systems, and methods for enhancing color consistency in images are disclosed. A method may include activating, by a device, a camera to capture first image data; while the camera is capturing the first image data, activating of a first light source; receiving the first image data, the first image data having pixels having first color values; identifying first light generated by the first light source while the camera is capturing the first image data; identifying, based on the first image data, second light generated by a second light source; generating, based on the first light, the second light, and a distance between the camera and the vehicle light, second color values for the pixels of the first image data; generating second image data based on the second color values; and presenting the second image data.

IMAGE DECODING DEVICE

An image decoding device (31) includes a transform coefficient decoding unit (311) configured to decode a transform coefficient for a transform tree included in a coding unit. In the transform tree, the transform coefficient decoding unit splits a transform unit corresponding to luminance and then decodes the transform coefficient related to the luminance, and does not split the transform unit corresponding to chrominance and decodes the transform coefficient related to the chrominance.

SIGNAL PROCESSING DEVICE AND METHOD, AND PROGROM

It is an object of the present invention to provide signals which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter 62 converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer 63 converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter 64 converts the third color signals into a luminance signal and color difference signals. A corrector 64A incorporated in the color signal converter corrects the color difference signals into color difference signals in a range ...

Circuit for controlling delay time between luminance and chrominance signals

A video signal recursive filter with luma/chroma separation

A motion adaptive recursive filter is modified to separate luminance or chrominance signal from composite video. The filter proportions and sums (18) current (10) and frame delayed (30) signal recursively to provide signal-to-noise enhanced luminance signal with the chrominance component reduced to a steady state residual value the first frame after motion ceases. Current composite video signal is appropriately scaled (22) and combined (24) with the signal-to-noise enhanced signal (B) to cancel the residual chrominance component therein.

IMAGE PROCESSOR, IMAGE PROCESSING METHOD AND PHOTOGRAPHING APPARATUS

PROBLEM TO BE SOLVED: To provide an image processor, an imaging processing method and a photographing apparatus capable of providing a favorable image in which white spots and black spots are suppressed by holding the information of saturation and contrast when performing dynamic range compression. SOLUTION: A level information calculation circuit 12 calculates the level information (for example, luminance information) of each pixel from R, G and B image signals in each pixel. A gain amount calculation circuit 14 calculates a gain amount (for example, 1. 5) by which the R, G and B signals of each pixel are multiplied by referring to a gain table G (Y) on the basis of the level information of each pixel calculated by the level information calculation circuit 12. A multiplication circuit 16 (16R, 16G and 16B) multiplies the R, G and B signals by the gain amount. COPYRIGHT: (C)2009,JPO&INPIT ...

METHOD FOR PROCESSING IMAGE, IMAGE PROCESSING APPARATUS, AND IMAGING APPARATUS

PROBLEM TO BE SOLVED: To provide an image processing apparatus capable of determining whether an input image is a vivid scene or not with the sense more close to a human being. SOLUTION: A method for processing images includes an image acquiring step of acquiring image data, a first correcting step of correcting saturation information of the image data on the basis of at least any one of the hue information and the luminance information of the image data, a determining step of determining whether the image of the image data is a vivid scene or not from the saturation information corrected in the first correcting step, and an output step of outputting a result of determination obtained in the determining step. COPYRIGHT: (C)2011,JPO&INPIT ...

Image processing device and method

A region determination circuit (60) determines whether or not each of the pixels in an image is within a correction subject region in which the frequency of appearance of a pixel having a brightness that is equal to or less than a predetermined brightness level is equal to or less than a predetermined value. An offset level generation circuit (10) generates an offset level (Offset) on the basis of the brightness of the pixel that has been determined to be within the correction subject region. An offset subtraction circuit (1) subtracts the offset level (Offset) from the image signal (Yi) and generates an offset image signal (Yofst). A gain generation circuit (20) generates the gain with respect to the offset image signal (Yofst). A gain addition circuit (2) adds the gain to the offset image signal (Yofst) and generates a corrected image signal (Ya).

Method and apparatus for conversion of HDR signals

Disclosed is a method and associated apparatus for processing an input video signal intended for a first display to produce an output signal appropriate for a second display that has different capabilities. The conversion uses one or more transfer functions arranged to provide relative scene light values to then remove or apply rendering intent. The rendering intent being the rendering intent of the input signal or rendering intent for the output signal. The removing or applying the rendering intent alters the luminance. Significantly, the conversion is arranged to alter the luminance but not colour components so that colour is unchanged. Uses include converting broadcast HDR signals into signals suitable for an SDR display screen; converting signals intended for cinema screen into signals suitable for a TV screen.

Motion detection in television signals

A method and apparatus are provided for detecting image motion in a television signal obtained by conversion of film images to a sequence of television video fields using a 2-3 film pulldown technique, comprising generating a plurality of interim motion detection signals which are always based upon a comparison of image points in the video signals which are spaced two sequential fields apart, and gating the plurality of interim motion detection signals together in order to generate a final motion detection signal. The gating step preferably comprises generating all but one of the plurality of interim motion detection signals by delaying the prior outputs of a single motion detector and combining them with an AND function and combining the output of the AND function and the remaining one of the interim motion detectors with an OR function. ...

Video signal processing

ENCODING AUXILIARY SIGNALS WITH COLOUR TELEVISION SIGNALS

Apparatus and a method are disclosed for encoding, transmitting and decoding one or two auxiliary or control signals on a phase alternating carrier. The phase alternating carrier PAC is generated such that, in a given frame, it is in-phase on one scan line and out of phase on the next scan line relative to the conventional chroma carrier. The (I and Q) chroma information is modulated on the chroma carrier C in a conventional form to generate a chroma signal. The phase alternating carrier is modulated with one or two auxiliary signals from sources 32, 38 in a similar fashion. The encoded phase alternating carrier is then added to the modulated chroma carrier (chroma signal) and processed in the chroma channel for recording on a magnetic tape. A decoder or playback apparatus processes the chroma channel to decode the two modulated carriers. The modulated chroma carrier (chroma signal) is decoded in a conventional demodulator to recover the chroma (I and Q) information. The encoded phase alternating ...

ELECTRONIC SIGNAL PROCESSING

... 1419873 Television; pulse shaping circuits ELLANIN INVESTMENTS Ltd 5 Sept 1973 [5 Sept 1972] 41824/73 Headings H4F and H3P The transition time of a signal, e.g. a lowbandwidth chroma signal I or Q, is reduced by averaging selected samples of the signal from one side of the transition and then from the other side of the transition, the transition of a corresponding signal having a shorter transition time, e.g. the luminance component, being determined and used to switch the sample averaging from one side to the other side of the transition. In this manner the apparent band width at the transition of the chroma signals substantially equals the luminance signal and a sharp edge is produced between different coloured objects. In addition registration errors between the chroma components are visually corrected. In the embodiment described the luminance signal and the I and Q signals are supplied to respective chains of series-connected signal delay devices, the value of the luminance signal ...

CONTOUR COMPENSATOR

Method and apparatus for conversion of hdr signals

SWITCHING CONFIGURATION FOR THE IMPROVEMENT OF THE DISSOLUTION OF VERTICAL OF A BY A VIDEO SIGNAL OF SHOWN TELEVISION PICTURE

SCHALTUNGSANORDNUNG ZUR VERBESSERUNG DER VERTIKALAUFLOESUNG EINES DURCH EIN VIDEOSIGNAL WIEDERGEGEBENEN FERNSEHBILDES

SCHALTUNGSANORDNUNG ZUR KOMPENSATION DER VERZERRUNGEN EINES VIDEOSIGNALS

SCHALTUNGSANORDNUNG ZUR DIGITALEN SIGNALVERARBEITUNG IN EINEM FERNSEHEMPFAENGER

SCHALTUNGSANORDNUNG FUER EIN SYSTEM ZUR VERARBEITUNG EINES EIN FARBBILD DARSTELLENDEN VIDEOSIGNALS

SWITCHING CONFIGURATION FOR THE AUTOMATIC BAND WIDTH CONTROL OF THE BRILLIANCE CHANNEL IN A COLOR TV HOME RECEIVER

VIDEO PICTURE DATA PROCESSING PROCEDURE F�R AN INDICATOR

DEVICE AND PROCEDURE FOR ADJUSTING THE FARBSÄTTIGUNG

SWITCHING CONFIGURATION FOR THE AUTOMATIC BAND WIDTH CONTROL OF THE BRILLIANCE CHANNEL IN A COLOR TV HOME RECEIVER

Signal processing apparatus, signal processing method, and program

There is a signal processing apparatus, including a gamma correction circuit that performs gamma correction on an input luminance signal and generates an output luminance signal, an output-to-input ratio calculation circuit that calculates a ratio of the output luminance signal to the input luminance signal as an output-to-input ratio of a luminance signal, and a color difference correction circuit that multiplies an input color difference signal by the output-to-input ratio of the luminance signal and generates an output color difference signal. As a result, by correcting the input color difference signal using the output-to-input ratio of the luminance signal, the output color difference signal in which color difference correction has been performed in view of influence of gamma correction can be generated.

Image color enhancement

Some embodiments of the invention provide a non-linear image-enhancement method to enhance an image that includes a number of picture elements. The non-linear enhancement method adjusts the brightness value of each pixel in the image and adjusts at least one chromatic value of each pixel in the image based on the adjustment to the brightness value of that pixel.

Projector device and projecting method

According to an aspect, a projector device includes an image projecting unit and a control unit. The image projecting unit projects an image. The control unit acquires brightness information of regions included in a projection surface on which the image projecting unit can project the image, and causes the image projecting unit to project, based on the brightness information of the regions, the image on a low-brightness region, among the regions, whose brightness is lower than that of another region.

Color restoration apparatus and method

A color restoration apparatus is provided. The color restoration apparatus including a color correction gain generator configured to compensate for a first broad-band pixel value of a first image, which is acquired from a single-exposure environment, based on a saturation gain for compensating for a difference between a time of the saturation of a broad-band pixel value and a time of the saturation of a narrow-band pixel value, and to calculate a color correction gain based on a first narrow-band pixel value of the first image and the compensated first broad-band pixel value, and a color corrector configured to compensate for a second broad-band pixel value of a second image, which is acquired from a dual-exposure environment, based on a color gain difference compensation value for compensating for a difference between color gains applied to the second image, and to calculate a restored narrow-band pixel value based on the second narrow-band pixel value, the compensated second broad-band pixel value, and the color correction gain.

Encoding, Decoding, and Representing High Dynamic Range Images

Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations.

Encoding, Decoding, and Representing High Dynamic Range Images

Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations.

Systems, Apparatus and Methods for Mapping Between Video Ranges of Image Data and Display

Systems, apparatus and methods are provided to map a video range of image data to the video range of a display. Embodiments apply a weighted combination of values in input image data streams to generate image data having a range which matches the display capabilities. The weighted combination may be determined based on relative capabilities of the display and input image data. The video range of the image data and display may be a range of colours (gamut) and/or luminance (dynamic range). 116-. (canceled)17. A method of processing image data for a display , the method comprising:receiving first and second image data streams representing a series of corresponding images to be displayed;determining relative ranges of a first set of values specified in the first image data stream and a second set of corresponding values specified in the second image data stream;determining a weighted combination of the first and second sets of values based at least in part on a comparison of the display capabilities and the relative ranges; andapplying the weighted combination to generate a third set of values for output to the display; chrominance values; and', 'luminance values., 'wherein the first, second and third sets of values comprise one of18. A method according to claim 17 , wherein the image data comprises video data.19. A method according to claim 17 , wherein the first image data stream is represented in a different image data format than the second image data stream.20. A method according to claim 17 , wherein the first set of values has a greater range than the second set of values.21. A method according to claim 20 , wherein the third set of values has a range which is intermediate the ranges of the first and second sets of values.22. A method of processing image data for a display claim 20 , the method comprising:receiving first and second image data streams representing a series of corresponding images to be displayed; andinterpolating between a first set of values ...

DISPLAY DEVICE AND METHOD FOR AUTOMATICALLY ADJUSTING THE BRIGHTNESS OF AN IMAGE ACCORDING TO THE IMAGE MODE

Disclosed is a display device and method for automatically adjusting the brightness of an image according to the image mode. The display device includes: a determination unit for obtaining information relating to an input image and determining the image mode of the input image on the basis of the obtained information; a converting unit for receiving the input image and automatically adjusting the brightness of the input image according to the image mode determined by the determination unit; and a display unit for displaying the image outputted from the converting unit. Accordingly, the image mode of an image is determined, and the brightness of the image is automatically adjusted, and in particular, the brightness of the image in 3D mode is adjusted automatically so that the user may watch a 3D image with a high level of satisfaction without additional settings. 1. A display device comprising:a determining unit obtaining information associated with an input video and determining a video mode of the input video based on the obtained information;a converting unit receiving the input video and automatically converting brightness of the input video according to the video mode determined by the determining unit; anda display unit displaying a video output from the converting unit.2. The display device of claim 1 , wherein the determining unit determines a 3D video format of the input video based on the obtained information when the video mode of the input video is a 3-dimension (3D) mode.3. The display device of claim 2 , wherein the converting unit includes:a brightness converter converting the brightness of the input video to be bright based on preset brightness conversion information when it is determined by the determining unit that the video mode of the input video is the 3D mode; anda 3D video converter converting the input video into a video having a 3D video format corresponding to a display type of the display unit based on the 3D video format of the input video ...

IMAGE DISPLAY DEVICE

An image display device includes an excitation light source; a fluorescent screen including a plurality of phosphor regions that are repeatedly formed in an in-plane direction and a retro-reflection region that reflects a part of incident light in the opposite direction of the incident light; a scanning unit that scans a surface of the fluorescent screen on which the phosphor regions and the retro-reflection region are formed with excitation light from the excitation light source; a photo detection unit that outputs signal value that varies on the basis of an incident light amount onto the photo detection unit; a reflection unit that reflects retro-reflection light of the excitation light directed from the retro-reflection region to the photo detection unit; and a control unit that causes the scanning unit to scan the fluorescent; detects boundaries between the phosphor regions and the retro-reflection region on the fluorescent screen based on the output signal of the photo detection unit, and controls a light emission timing of the excitation light source based on the detected boundaries. 1. An image display device , comprising:an excitation light source;a fluorescent screen that includes a plurality of phosphor regions which are repeatedly formed in an in-plane direction and a retro-reflection region that reflects a part of light that enters the retro-reflection region in a direction opposite to a direction of the light;a scanning unit that scans a surface of said fluorescent screen on which said phosphor regions and said retro-reflection region are formed with excitation light emitted from said excitation light source;a photo detection unit that outputs a signal value that varies on the basis of a quantity of light that enters said photo detection unit;a reflection unit that reflects retro-reflection light of the excitation light directed from said retro-reflection region to said photo detection unit; anda control unit that causes said scanning unit to scan said ...

Method of and Apparatus for Image Enhancement

Image enhancement by separating the image signals, either Y or RGB, into a series of bands and performing noise reduction on bands below a given frequency but not on bands above that frequency. The bands are summed to develop the image enhanced signals. This results in improved sharpness and masking of image processing pipeline artifacts. Chroma signals are not separated into bands but have noise reduction applied to the full bandwidth signals. The higher frequency band is attenuated or amplified based on light level. The noise reduction has thresholds based on measured parameters, such as signal frequency, gain and light level, provided in a lookup table. The window size used for the noise reduction varies with the light level as well, smaller windows sizes being used in bright light and increasing window sizes as light levels decrease. Panoramic images are handled in a similar fashion.

Systems and methods for creating full-color image in low light

Full-color images of low-light scenes are generated by the systems and methods described herein using only two light channels. An array of photosensitive pixels includes two sets of pixels, the first sensitive only to light associated with a first light channel, the second only to light associated with a second light channel. Thus the first set of pixels generate a first set of electrical signals in response to incident light within the first light channel, and the second set of pixels generate a second set of electrical signals in response to incident light within the second light channel. An image processor receives the first and second sets of electrical signals and generates a full-color image of the scene by processing only signals generated by the first and second sets of pixels.

Signal processing apparatus and method, and program

Signals are provided which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter converts the third color signals into a luminance signal and color difference signals. A corrector incorporated in the color signal converter corrects the color difference signals into color difference signals.

DECODING DEVICE AND ENCODING DEVICE

According to an embodiment, a decoding device includes an acquiring unit configured to acquire first format information, encoded data, and first filter information, the first format information indicating a resolution of a color-difference component of the encoded data; a decoding unit configured to decode the encoded data to obtain a decoded image; and a converting unit configured to convert a color-difference format of the decoded image represented by a first color-difference format by using a filter identified by the filter information. 1. A decoding device comprising:an acquiring unit configured to acquire first format information, encoded data, and filter information, the first format information indicating a resolution of a color-difference component of the encoded data;a decoding unit configured to decode the encoded data to obtain a decoded image; anda converting unit configured to convert a color-difference format of the decoded image represented by a first color-difference format by using a filter identified by the filter information.2. The device according to claim 1 , whereinthe acquiring unit further acquires second color-difference format information that indicates a resolution of the color-difference component of the decoded image converted by the converting unit, andthe converting unit converts the decoded image represented by the first color-difference format into the converted decoded image represented by the second color-difference format by using the filter identified by the filter information.3. The device according to claim 2 , wherein the filter information is used in converting the decoded image including the first color-difference format into the decoded image including the second color-difference format.4. The device according to claim 1 , wherein the filter information is used to identify a filter used for up-sampling to increase the resolution of the color-difference component and is used to identify a filter used for down-sampling to ...

Image processing device, imaging device, image processing method, and image processing program

Disclosed are an image processing device, an imaging device, an image processing method, and an image processing program capable of, when recovering a deteriorated image due to a point spread function of an optical system, suppressing the occurrence of artifact and color gradation and achieving reduction in computational costs. The image processing device includes a frequency recovery processing unit which subjects image data acquired from an imaging element by capturing an object image using an optical system to frequency recovery processing using a frequency recovery filter based on a point spread function of the optical system, a gradation correction processing unit which subjects image data subjected to the frequency recovery processing to nonlinear gradation correction, and a phase recovery processing unit which subjects image data subjected to the gradation correction to phase recovery processing using a phase recovery filter based on the point spread function of the optical system.

Method And Apparatus For Conversion Of HDR Signals

Described are concepts, systems and techniques related to processing an input video signal intended for a first display to produce an output signal appropriate for a second display. The concepts, systems and techniques include converting using one or more transfer functions arranged to provide relative scene light values and remove or apply rendering intent of the input or output video signal, wherein the removing or applying rendering intent alters luminance. 1. A method of processing an input video signal intended for a first display to produce an output signal appropriate for a second display , comprising converting using one or more transfer functions arranged to:provide relative scene light values; andremove or apply rendering intent of the input or output video signal;wherein the removing or applying rendering intent alters luminance.2. A method according to claim 1 , wherein the removing or applying rendering intent is applied to a luminance component.3. A method according to claim 1 , wherein removing or applying rendering intent is applied to RGB components without altering relative values such that colour is unchanged.4. A method according to claim 1 , further comprising scaling to convert between an absolute range and a relative range.5. A method according to claim 1 , wherein at least one of the input or output signals is a display referred signal and the rendering intent is the rendering intent of the display referred signal.6. A method according to claim 5 , wherein the output signal is a display referred signal and the removing or applying rendering intent is an opto-optical transfer function to provide the rendering intent for the display referred signal.7. A method according to claim 5 , wherein the input is a display referred signal and the removing or applying rendering intent is an inverse opto-optical transfer function to remove the rendering intent from the display referred signal.8. A method according to claim 1 , wherein one or more transfer ...

Image signal processing apparatus and a control method thereof, and an image pickup apparatus and a control method thereof

An image pickup apparatus includes a first image reduction unit configured to reduce the size of an image output by an image pickup element, a memory configured to store the image reduced by the first image reduction unit, an external output unit configured to output the image stored in the memory, a display configured to display an image being shot, a second image reduction unit configured to reduce, to the display size on the display, the image reduced by the first image reduction unit, without causing the reduced image to be stored in the memory and a signal processor for the display configured to perform signal processing of the image reduced to the display size on the display.

IMAGE SENSOR AND DRIVING METHOD THEREOF

An image sensor includes a first unit pixel including a first sub-pixel and a second sub-pixel, a second unit pixel including a third sub-pixel and a fourth sub-pixel, a timing controller configured to apply a first effective integration time to the first sub-pixel and the fourth sub-pixel, such that a first sensing signal and a fourth sensing signal are generated from the first sub-pixel and the fourth sub-pixel, respectively, and to apply a second effective integration time shorter than the first effective integration time to the second sub-pixel and the third sub-pixel, such that a second sensing signal and a third sensing signal are generated from the second sub-pixel and the third sub-pixel, respectively, and an analog-to-digital converter configured to perform an averaging operation on the first sensing signal and the fourth sensing signal or on the second sensing signal and the third sensing signal. 1. An image sensor for sensing an image signal of a plurality of illumination ranges , the image sensor comprising:a first unit pixel including a first sub-pixel and a second sub-pixel;a second unit pixel including a third sub-pixel and a fourth sub-pixel;a timing controller configured to apply a first effective integration time to the first sub-pixel and the fourth sub-pixel, such that a first sensing signal and a fourth sensing signal are generated from the first sub-pixel and the fourth sub-pixel, respectively, and to apply a second effective integration time shorter than the first effective integration time to the second sub-pixel and the third sub-pixel, such that a second sensing signal and a third sensing signal are generated from the second sub-pixel and the third sub-pixel, respectively; andan analog-to-digital converter configured to perform an averaging operation on the first sensing signal and the fourth sensing signal or on the second sensing signal and the third sensing signal.2. The image sensor of claim 1 , wherein: first and second photoelectric ...

SOLID-STATE IMAGING DEVICE, METHOD FOR PROCESSING SIGNAL OF SOLID-STATE IMAGING DEVICE, AND IMAGING APPARATUS

A solid-state imaging device includes a color filter unit disposed on a pixel array unit including pixels two-dimensionally arranged in a matrix and a conversion processing unit disposed on a substrate having the pixel array unit thereon. The color filter unit has a color arrangement in which a color serving as a primary component of a luminance signal is arranged in a checkerboard pattern and a plurality of colors serving as color information components are arranged in the other area of the checkerboard pattern. The conversion processing unit converts signals that are output from the pixels of the pixel array unit and that correspond to the color arrangement of the color filter unit into signals that correspond to a Bayer arrangement and outputs the converted signals. 1a pixel array unit including pixels arranged two-dimensionally in a matrix of rows and columns relatively along a first direction and a second direction which is perpendicular to the first direction, respectively;a color filter unit disposed over the pixel array unit, the color filter unit having a coding with regions respectively corresponding to the pixels, the regions transmitting either white light or light of a primary color, the white light transmitting regions being arranged in a checkerboard pattern at a one-pixel pitch, red light transmitting regions being arranged in a checkerboard pattern at a two-pixel pitch, blue light transmitting regions being arranged in a checkerboard pattern at a two-pixel pitch, each of the red light transmitting regions being diagonally shifted from one of the blue light transmitting regions by one pixel, and all remaining regions being green light transmitting regions; anda conversion processing unit, the conversion processing unit converting signals that are output from the pixels of the pixel array unit and that correspond to the coding of the color filter unit into converted signals that correspond to a Bayer arrangement and outputting the converted signals, ...

IMAGING DEVICE

An imaging device is provided with a lens distortion correction function that requires less circuit scale and does not degrade image resolution. 1. An imaging device that images an object , the imaging device comprising:an imaging element including a plurality of color filters;a same-color interpolation unit that generates a lens distortion-corrected interpolation signal by using a same-color pixel in an image signal from the imaging element;a luminance signal generation unit that generates a luminance signal from the image signal from the imaging element;a first luminance interpolation unit and a second luminance interpolation unit that use the luminance signal generated by the luminance signal generation unit to generate a lens distortion-corrected interpolation signal;a lens distortion characteristics table data unit that holds information of coordinates after lens distortion characteristics correction in a memory;a coordinate/interpolation coefficient setting unit that individually generates interpolation coefficients for correcting lens distortion for each of the same-color interpolation unit, the first luminance interpolation unit, and the second luminance interpolation unit on the basis of information from the lens distortion characteristics table data unit; anda correction unit that outputs an interpolation signal that corrects a signal from the same-color interpolation unit from a ratio between the interpolation signal generated by the first luminance interpolation unit and the interpolation signal generated by the second luminance interpolation unit.2. An imaging device that images an object , the imaging device comprising:an imaging element including a plurality of color filters;a same-color interpolation unit that generates a lens distortion-corrected interpolation signal by using a same-color pixel in an image signal from the imaging element;a luminance signal generation unit that generates a luminance signal from the image signal from the imaging ...

IMAGING ELEMENT AND IMAGING APPARATUS

A solid-state imaging element includes pixel cells in which apertures of light shielding films are off-centered in opposite directions. The pixel cells includes a pixel cell which detects a R light component, a pixel cell which detects a G light component, and a pixel cell which detects a B light component. In the pixel cells, a relationship among an off-centered amount Or of the aperture in the pixel cell which detects the R light component, an off-centered amount Og of the aperture in the pixel cell which detects the G light component, and an off-centered amount Ob of the aperture in the pixel cell which detects the B light component is Or>Og>Ob.

IMAGE DETAILS PROCESSING METHOD, APPARATUS, TERMINAL, AND STORAGE MEDIUM

Embodiments of the present disclosure disclose an image details processing method, comprises: obtaining each luminance data in the image; performing non-linear transformation on the each luminance data to obtain corresponding transformed data; performing the low frequency processing on the transformed data to obtain low frequency data; based on the low-frequency data and the transformed data, determining the corrected luminance data. The embodiments of the present disclosure also disclose an image details processing apparatus, a terminal, and a storage medium. 1. An image details processing method , comprises:obtaining each luminance data in the image;performing non-linear transformation on the each luminance data to obtain corresponding transformed data;performing the low frequency processing on the transformed data to obtain low frequency data;based on the low-frequency data and the transformed data, determining the corrected luminance data.2. The method according to claim 1 , wherein: performing non-linear transformation on the each luminance data to obtain corresponding transformed data claim 1 , comprises:transforming the luminance data from the real-number domain to the logarithmic domain to obtain the corresponding transformed data.3. The method according to claim 1 , wherein: performing the low frequency processing on the transformed data to obtain low frequency data claim 1 , comprises:performing low-frequency filtering on the transformed data to obtain the low-frequency data; orperforming bi-linear interpolation on the transformed data to obtain the low-frequency data.5. The method according to claim 1 , wherein: obtaining each luminance data in the image claim 1 , comprises:receiving user's photographing instruction;getting the image data of the current frame; andseparating the luminance component from the image data as the luminance data.6. An image details processing apparatus claim 1 , comprises:an obtaining unit, configured to obtain each luminance ...

LASER LIGHTING HAVING SELECTIVE RESOLUTION

In an example, the present invention provides an optical engine apparatus. The apparatus has a laser diode device, the laser diode device characterized by a wavelength ranging from 300 to 2000 nm or any variations thereof. In an example, the apparatus has a lens coupled to an output of the laser diode device and a scanning mirror device operably coupled to the laser diode device. In an example, the apparatus has an un-patterned phosphor plate coupled to the scanning mirror and configured with the laser device; and a spatial image formed on a portion of the un-patterned phosphor plate configured by a modulation of the laser and movement of the scanning mirror device. 120.-. (canceled)21. An apparatus for lighting , the apparatus being selected from an application consisting of at least one of a white lighting , a white spot lighting , a flash lights , an automobile headlight , or an all-terrain vehicle lighting , the apparatus comprising: a laser diode device, characterized by a wavelength;', 'a lens coupled to an output of the laser diode device;', 'a scanning mirror device operably coupled to the laser diode device;', 'an un-patterned phosphor plate coupled to the scanning mirror device and configured with the laser diode device; and', form a first spatial image having a first resolution on a first portion of the un-patterned phosphor plate by a modulation of the laser diode device and movement of the scanning mirror device; and', 'form a second spatial image having a second resolution on a second portion of the un-patterned phosphor plate, the second resolution being different than the first resolution, wherein the second spatial image is formed concurrently with the first spatial image on the un-patterned phosphor plate., 'a controller coupled to the laser diode device and the scanning mirror device, the controller configured to], 'an optical engine apparatus for selective resolution comprising22. The apparatus of wherein the un-patterned phosphor plate comprises ...

METHOD FOR PROCESSING AN INPUT IMAGE, DEVICE, TERMINAL EQUIPMENT AND ASSOCIATED COMPUTER PROGRAM

A method for processing at least one digital image for reproduction on a display device. The image includes image elements, an image element being associated with color information having, in a first color space, a luminance component and chrominance components. The method includes the following acts: determining a number of image elements, known as “bright” elements, at least the luminance component of which has a value greater than a first predetermined threshold; evaluating a maximum tolerated brightness value as a decreasing function of the number of counted image elements; and transforming the first luminance components of the image elements to second luminance components, including for an image element, calculating an intermediate luminance value by applying an expansion exponent to the first luminance component value and multiplying the intermediate value calculated by the evaluated maximum tolerated luminosity value. 1. A processing method comprising:processing at least one digital image for reproduction on a display device, said image comprising image elements, an image element being associated with color information comprising, in a first color space, a luminance component and chrominance components, said luminance component having a value within a first interval of predetermined values, said device being capable of restoring luminance values within a second interval of predetermined values, of a length greater than that of the first interval, said processing comprising the following acts performed by a processing device:counting a number of image elements, known as “bright” elements, at least the luminance component of which has a value greater than a first predetermined threshold;evaluating a maximum tolerated brightness value as a decreasing function of the number of counted pixels; andtransforming the first luminance components of the image elements to second luminance components, comprising for an image element, calculating an intermediate luminance ...

CAMERA DEVICE

A camera device is provided. The camera device includes a light emitting portion configured to change a light path of light according to a first control signal and output the light along a first light path or a second light path, a light receiving portion configured to receive the light reflected by an object and generate an electrical signal, and a control portion configured to generate the first control signal which controls the light path of the light to be changed to the first light path or the second light path. Here, the light emitting portion outputs the light with a first pattern along the first light path or outputs the light with a second pattern along the second light path. 1. A camera device comprising:a light emitting portion configured to change a light path of light according to a first control signal and output the light along a first light path or a second light path;a light receiving portion configured to receive the light reflected by an object and generate an electrical signal; anda control portion configured to generate the first control signal which controls the light path of the light to be changed to the first light path or the second light path,wherein the light emitting portion outputs the light with a first pattern along the first light path or outputs the light with a second pattern along the second light path.2. The camera device of claim 1 , wherein the first pattern comprises a surface light source pattern claim 1 , andwherein the second pattern comprises a point light source pattern.3. The camera device of claim 1 , wherein the light emitting portion comprises:a light source comprising a plurality of light emitting elements and configured to generate the light;a lens assembly configured to condense light generated by the light source and output the condensed light along the first light path or the second light path; andan optical member disposed to be spaced apart from the light source and configured to diffract the light.4. The ...

YCBCR PULSED ILLUMINATION SCHEME IN A LIGHT DEFICIENT ENVIRONMENT

The disclosure extends to methods, systems, and computer program products for producing an image in light deficient environments with luminance and chrominance emitted from a controlled light source. 131-. (canceled)33. (canceled)34. The method of claim 33 , further comprising actuating the plurality of sources simultaneously.35. The method of claim 34 , further comprising pulsing the plurality of sources at a predetermined interval.36. The method of claim 32 , further comprising adjusting the pulse to provide luminance information during the luminance frame claim 32 , by matching to color space conversion coefficients.37. The method of claim 32 , further comprising adjusting the pulse to provide chrominance information during the chrominance frame to match to color space conversion coefficients.38. The method of claim 37 , wherein the chrominance information is blue.39. The method of claim 37 , wherein the chrominance information is red.40. The method of claim 32 , further comprising pulsing the emitter to produce a pulsing pattern of luminance claim 32 , chrominance blue claim 32 , luminance claim 32 , chrominance red.41. The method of claim 32 , further comprising pulsing the emitter to produce a pulsing pattern of luminance claim 32 , chrominance blue combined with chrominance red claim 32 , luminance claim 32 , chrominance blue combined with chrominance red.42. The method of claim 32 , wherein the controller is configured to use chrominance frames more than once to reconstruct resultant frames.43. The method of claim 32 , further comprising compensation with a luminance coefficient to chrominance frames by and image signal processor and wherein the luminance coefficient is an integer that is a multiple of (½)n.44. The method of claim 32 , wherein the image sensor comprises uniform pixels configured to be read individually.45. The method of claim 44 , reading data from the image sensor at a plurality of frame durations wherein the plurality of frame durations ...

ENCODING, DECODING, AND REPRESENTING HIGH DYNAMIC RANGE IMAGES

Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations. 1. A non-transitory processor readable medium having stored thereon an image structure for representing a high dynamic range image in a compressed format to be decoded by a decoder , the image structure comprising:a compressed tone-mapped image in a standard-based compression format; and a quantized luma ratio image comprising log ratio pixel values;', 'luma de-quantization parameters for the quantized log ratio pixel values;', 'one or more sets of quantized residual chroma values; and', 'chroma de-quantization parameters for the one or more sets of quantized residual chroma values., 'high dynamic range (HDR) reconstruction data, wherein the HDR reconstruction data comprise2. The non-transitory processor readable medium of claim 1 , wherein the image structure comprises an image file structure and the compressed tone-mapped image is separated from the HDR reconstruction data using using one or more file application markers.3. The non-transitory processor readable medium of wherein the standard-based compression format is the JPEG format.4. The non-transitory processor readable medium of claim 1 , wherein the log ratio pixel ...

COLOR REMAPPING FOR NON-4:4:4 FORMAT VIDEO CONTENT

A video decoder is configured to reconstruct a first version of a current picture; determine a transformed sample of the first component, a transformed sample of the second component, and a transformed sample of the third component by applying a first matrix to a triplet comprising the samples of the first, second, and third components; include the transformed samples of the first, second, and third components in a second version of the current picture; determine, based on the transformed samples of the first, second, and third components and a first row of a second matrix, a set of transformed samples for the third component, the set of transformed samples for the third component including samples of the third component that are immediately neighboring the transformed sample of the third component; and include the set of transformed samples for the third component in the second version of the current picture. 1. A method of processing video data , the method comprising:receiving a bitstream comprising an encoded representation of the video data; the first version of the current picture is formatted according to a sampling format in which there are fewer samples of a first component and a second component than of a third component,', 'the first version of the current picture includes a sample of the first component, a sample of the second component, and a sample of the third component, and', 'the sample of the third component corresponds to the sample of the first component and the sample of the second component,, 'reconstructing, based on the bitstream, a first version of a current picture of the video data, whereindetermining a transformed sample of the first component, a transformed sample of the second component, and a transformed sample of the third component by applying a first matrix to a triplet comprising the sample of the first component, the sample of the second component, and the sample of the third component;including the transformed sample of the first ...

IMAGE PROCESSING DEVICE AND METHOD

A region determination circuit () determines whether or not each of the pixels in an image is within a region subject to correction, in which pixels having at most a predetermined brightness level appear with a frequency equal to or less than a predetermined value. An offset level generation circuit () generates an offset level (Offset) on the basis of the brightness of the pixels determined to be within the region subject to correction. An offset subtraction circuit () subtracts the offset level (Offset) from the image signal (Yi) to generate an offset image signal (Yofst). A gain generation circuit () generates a gain for the offset image signal (Yofst). A gain multiplication circuit () multiplies the offset image signal (Yofst) by the gain to generate a corrected image signal (Ya). 1. An image processing device comprising:a region decision circuit for deciding whether each pixel of an image represented by an image signal is disposed within a region subject to correction, in which pixels having at most a predetermined brightness level appear with a frequency equal to or less than a predetermined value;an offset level generation circuit for generating an offset level for each of those pixels in the image represented by the image signal which are determined by the region decision circuit to be within the region subject to correction;an offset subtraction circuit for subtracting the offset level generated by the offset level generation circuit from the image signal to generate an offset image signal;a gain generation circuit for generating a gain for the offset image signal; anda gain multiplication circuit for multiplying the offset image signal by the gain to generate a corrected image signal.2. The image processing device of claim 1 , further comprising:a mixing ratio generation circuit for generating a mixing ratio for each pixel of the image represented by the image signal on a basis of a low brightness pixel ratio, which is a proportion of pixels having at most ...

Guided tone mapping of high dynamic range video based on a bezier curve for presentation on a display device

A method comprising receiving an input video signal comprising high dynamic range (HDR) video for presentation on a display device, and receiving metadata for the input video signal. The metadata comprises a first Bezier curve for tone mapping of the HDR video that fits a first peak luminance level. The method further comprises adjusting the first Bezier curve to a second Bezier curve for tone mapping of the HDR video that fits a second peak luminance level. The display device has the second peak luminance level, and the second peak luminance level is different from the first peak luminance level. The method further comprises producing a tone mapped video signal of the input video signal utilizing the second Bezier curve. The tone mapped video signal is provided to the display device for presentation.

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD THEREOF

Disclosed is an image processing apparatus and a control method thereof that can correct the brightness of a pixel in an image. Reflection characteristics of environment light when the image is captured are estimated by applying smoothing to the image. The brightness of the pixel is corrected by computing a correction value for correcting the brightness of the pixel based on the reflection characteristics of the environment light and adding the correction value to the pixel. The brightness can be corrected while suppressing an amplification of noise and a loss of details of a subject. 1. An image processing apparatus that corrects a brightness of a pixel in an image , the apparatus comprising:an estimating unit configured to estimate reflection characteristics of environment light when the image was captured;a computing unit configured to compute a correction value that corrects the brightness of the pixel based on the reflection characteristics of the environment light; anda correcting unit configured to correct the brightness of the pixel by adding the correction value to the pixel,wherein the estimating unit estimates the reflection characteristics of the environment light by applying smoothing to the image.2. The image processing apparatus according to claim 1 ,wherein the estimating unit estimates the reflection characteristics of the environment light by applying smoothing to a plurality of pixels present around the pixel.3. The image processing apparatus according to claim 1 ,wherein the estimating unit estimates the reflection characteristics of the environment light by applying smoothing to a plurality of pixels present in the same characteristic area as the pixel.4. The image processing apparatus according to claim 1 ,wherein in the case where a color of the pixel is within an area of a particular color predetermined by a color space, the estimating unit estimates the reflection characteristics of the environment light by applying smoothing to a plurality ...

METHOD FOR CONVERTING LUMINANCE RANGE OF PICTURE SIGNAL

In a converting method relating to picture luminance according to one aspect of the present disclosure, the picture luminance is formed by luminance values in a first luminance range. In this method, a first luminance signal that indicates code values obtained by quantizing the luminance value of the picture is obtained, code values, which are associated with the code values indicated by the obtained first luminance signal by quantization for a second luminance range different in a maximum value from the first luminance range are determined as converted code values, and the first luminance signal is converted into a second luminance signal indicating the converted code values. As a result, the converting method is further improved. 1. A method comprising:obtaining a first luminance signal that indicates a first code value obtained by quantizing a luminance value of a picture, luminance of the picture being formed by a luminance value in a first luminance range; andconverting the first luminance signal into a second luminance signal indicating a converted code value by deciding, as the converted code value, a second code value, which is associated with the first code value indicated by the obtained first luminance signal, the second code value being for a second luminance range different in a maximum value from the first luminance range.2. The method according to claim 1 , whereinthe first luminance signal indicates the first code value obtained by quantizing the luminance value of the picture by using a first Electro-Optical Transfer Function (EOTF) where the luminance value in the first luminance range and a plurality of first code values are associated with each other, andin the converting,the second code value associated with the first code value indicated by the obtained first luminance signal is decided as the converted code value by using the first EOTF and a second EOTF where the luminance value in the second luminance range and a plurality of second code ...

IMAGING DEVICE, METHOD AND SYSTEM OF PROVIDING FILL LIGHT, AND MOVABLE OBJECT

A fill light providing method includes obtaining an automatic exposure parameter of an image sensor and controlling a fill light lamp to provide a fill light based upon the automatic exposure parameter. 1. A fill light providing method comprising:obtaining an automatic exposure parameter of an image sensor; andcontrolling a fill light lamp to provide a fill light based upon the automatic exposure parameter.2. The method of claim 1 , wherein controlling the fill light lamp to provide the fill light includes:turning off a power switch of the fill light lamp if the automatic exposure parameter satisfies a preset condition; orturning on the power switch of the fill light lamp if the automatic exposure parameter does not satisfy the preset condition.3. The method of claim 1 , wherein controlling the fill light lamp to provide the fill light includes:maintaining an illumination intensity of the fill light lamp if the automatic exposure parameter satisfies a preset condition; oradjusting the illumination intensity of the fill light lamp if the automatic exposure parameter does not satisfy the preset condition.4. The method of claim 1 , wherein obtaining the automatic exposure parameter of the image sensor includes:obtaining an automatic exposure parameter of consecutive image frames captured by the image sensor.5. The method of claim 4 , wherein controlling the fill light lamp to provide the fill light based upon the automatic exposure parameter includes:controlling the fill light lamp to provide the fill light based upon the automatic exposure parameter of one of the image frames.6. The method of claim 5 , wherein the automatic exposure parameter of the one of the image frames is used to control an illumination intensity of the fill light lamp in obtaining a next image frame to be captured after the one of the image frames.7. The method of claim 4 , wherein:a number of frames of the consecutive image frames is less than a preset number of frames; and/ora frame rate of the ...

IMAGE PICKUP APPARATUS, INFORMATION PROCESSING SYSTEM, MAT, AND IMAGE GENERATION METHOD

An image of a block or the like entering a space above a play mat is picked up by an image pickup apparatus, and an information processing apparatus detects and recognizes the block on the basis of a picture of the block in a picked up image and performs information processing. The play mat includes a play field that defines a detection space for the block, and a calibration chart including at least a plurality of regions of colors of different luminances. The image pickup apparatus adjusts an exposure time period, a gain value for each color component and a correction rule upon gamma correction on the basis of the picture of the calibration chart in the picked up image. 1. An image pickup apparatus that outputs data of a picked up image to be used for recognition of a real object , comprising:an output image production unit configured to produce data of a picked up image to be outputted from data of a non-processed image picked up using an image pickup element;an adjustment processing unit configured to evaluate the picked up image and adjust at least one of an image pickup condition in the image pickup element and a processing condition in the output image production unit; anda data sending out unit configured to output the data of the picked up image to an apparatus that recognizes the real object, whereinthe adjustment processing unit adjusts the image pickup condition and the processing condition based on color information of a picture of a calibration chart that is provided in a space of a recognition target and is configured from a plurality of color regions having luminances different from each other.2. The image pickup apparatus according to claim 1 , wherein the adjustment processing unit evaluates the luminance of a picture of the color regions of the calibration chart and adjusts the processing condition so as to expand the difference between a plurality of luminances corresponding to the luminance of the color of the real object.3. The image pickup ...

VIDEO TRANSMITTING CIRCUIT AND SIGNAL DELAY COMPENSATION METHOD THEREOF

A video transmitting circuit and a signal delay compensation method thereof are provided. The video transmitting circuit transmits a specific signal through a first transmission path and a second transmission path to a video receiver during a calibration mode. In the calibration mode, a return detection circuit of the video transmitting circuit detects whether or not a first return signal transmitted through the first transmission path and a second return signal transmitted through the second transmission path have been received by the video transmitting circuit. The video transmitting circuit sets delay circuits serially connected in the first or second transmission path according to a detection result of the return detection circuit, such that the first return signal transmitted through the first transmission path and the second return signal transmitted through the second transmission path can synchronously arrive at the video receiver. 1. A video transmitting circuit configured to transmit a video signal at least composed of a first signal and a second signal , in which the first signal is transmitted through a first transmission path and the second signal is transmitted through a second transmission path to a video receiver , and comprising:a pre-processing circuit configured to detect whether or not a preset pulse has been received by the video transmitting circuit, wherein the video transmitting circuit switches to a calibration mode and the pre-processing circuit transmits a specific signal to the video receiver through the first transmission path and the second transmission path when the preset pulse is received by the video transmitting circuit;a return detection circuit configured to detect a first return signal transmitted through the first transmission path and a second return signal transmitted through the second transmission path from the video receiver to the video transmitting circuit when the video transmitting circuit is in the calibration mode, ...

ELECTRONIC DEVICE INCLUDING IMAGE SENSOR

An electronic device includes: a display; a first image sensor configured to output a first image signal based on sensing a first light passing through the display; a second image sensor configured to output a second image signal based on sensing a second light that does not pass through the display; and a processor configured to: generate a first optical value and a second optical value based on the second image signal, the second optical value being different from the first optical value; based on the first optical value satisfying a first condition, correct the first image signal by using the second optical value. 1. An electronic device comprising:a display;a first image sensor configured to output a first image signal based on sensing a first light passing through the display;a second image sensor configured to output a second image signal based on sensing a second light that does not pass through the display; and generate a first optical value and a second optical value based on the second image signal, the second optical value being different from the first optical value, and', 'based on the first optical value satisfying a first condition, correct the first image signal by using the second optical value., 'a processor configured to2. The electronic device of claim 1 , wherein the first optical value includes at least one of a luminance value or an illuminance value generated based on the second image signal claim 1 , andwherein the second optical value includes a color temperature value generated based on the second image signal.3. The electronic device of claim 2 , wherein the processor is further configured to claim 2 , based on the first optical value satisfying the first condition and further based on the color temperature value being less than a first color temperature or being equal to or greater than a second color temperature claim 2 , correct the first image signal by using the color temperature value claim 2 , the second color temperature being ...

COLOR DISPLAY MODES FOR A THERMAL IMAGING SYSTEM

Systems and methods for allocating display colors to thermal image intensity data acquired by thermal band photodetectors are described. The intensity data from the photodetectors, which corresponds to the scene temperature, is usually converted to a digital value falling within the range of the analog to digital conversion (ADC). The full ADC range may be divided into two or more sub-ranges. In at least one sub-range intensity values within that sub-range may be assigned display colors from a first color table utilizing one or more Histogram Equalization (HE) techniques. In at least one other sub-range, specific display values from a color table different from the first may be assigned to specific intensity values. In some embodiments, the HE assigned sub-range may be lower in intensity than the specific assigned sub-range. For a thermal imaging system including thermography, the sub-ranges may correspond to scene temperature ranges, where lower temperatures are assigned colors using HE and higher temperatures are assigned specific colors corresponding to specific temperatures. Such an arrangement is particularly applicable to thermal imaging use by firefighters because the arrangement allows them to determine temperature directly from displayed color for potentially dangerous temperatures. In some cases the sub-range may be applied to certain pixels within desired temperature ranges, and those chosen pixels may be assigned to all or part of a second color table, and in some cases the second color table may be applied to the sub-range pixels by histogram equalization. This arrangement is applicable to highlighting temperatures corresponding to objects, such as humans or animals to make these objects high contrast for search applications. 1. A method for displaying data from a thermal imaging system , the thermal imaging system including an array of photodetectors , each detector configured to output a signal corresponding to an acquired thermal intensity of a ...

COLOR CONVERSION FOR AMBIENT-ADAPTIVE DIGITAL CONTENT

A method for digital image color conversion includes, at a first computing device, capturing a first digital image of a first real-world environment. Based on ambient lighting conditions of the first real-world environment, a first ambient lighting-agnostic digital image is generated using a capture-side ambient lighting color conversion. The first ambient lighting-agnostic digital image is transmitted to a second computing device in a second real-world environment. From the second computing device, a second ambient lighting-agnostic digital image is received, the second image having been generated by the second computing device from a second digital image using the capture-side ambient lighting color conversion. Based on the ambient lighting conditions of the first real-world environment, a lighting-corrected digital image is generated from the second ambient lighting-agnostic digital image using a display-side ambient lighting color conversion. The lighting-corrected digital image is displayed on the first computing device. 1. A method for digital image color conversion , comprising:at a first computing device, capturing a first digital image of a first real-world environment;based on ambient lighting conditions of the first real-world environment, generating a first ambient lighting-agnostic digital image from the first digital image using a capture-side ambient lighting color conversion;transmitting the first ambient lighting-agnostic digital image to a second computing device in a second real-world environment;receiving, from the second computing device, a second ambient lighting-agnostic digital image of the second real-world environment, the second ambient lighting-agnostic digital image having been generated by the second computing device from a second digital image using the capture-side ambient lighting color conversion;based on the ambient lighting conditions of the first real-world environment, generating a lighting-corrected digital image from the ...

ADAPTIVE LUMINANCE/COLOR CORRECTION FOR DISPLAYS

The systems described herein facilitate providing a virtual content with an intended appearance. The virtual content can be an interactive space. The interactive space may be presented on a display of a presentation device. The display can be a transparent display. The interactive space can be superimposed over a perspective of a physical real-world environment of a user. Environmental characteristics of the physical real-world environment can alter the intended appearance of the interactive space superimposed over a perspective of a physical real-world environment. The environmental characteristics include one or more of a light intensity, color, and/or other visual features of the physical real-world environment. The appearance of the interactive space can be altered to compensate for the environmental characteristics. The appearance of the interactive space can be altered such the user can perceive the interactive space as intended by the creator of the interactive space. 1. A system configured to dynamically adjust graphical features on a display , the system comprising:a client device comprising a display and an environment sensor, the display being configured to effectuate presentation of visual content, and the environment sensor being configured to generate output signals conveying environment information, the environment information including characteristics of ambient light within a surrounding environment of the client device; obtain reference information, the reference information defining a set of expected values of visual parameters of the visual content, the visual parameters including a brightness parameter, a contrast parameter, and a color parameter;', 'obtain display information, the display information defining display values of the visual parameters of the visual content according to characteristics of the display of the client device;', 'determine the environment information from the output signals;', 'compare the display values of individual ...

LASER LIGHTING HAVING SELECTIVE RESOLUTION

In an example, the present invention provides an optical engine apparatus. The apparatus has a laser diode device, the laser diode device characterized by a wavelength ranging from 300 to 2000 nm or any variations thereof. In an example, the apparatus has a lens coupled to an output of the laser diode device and a scanning mirror device operably coupled to the laser diode device. In an example, the apparatus has an un-patterned phosphor plate coupled to the scanning mirror and configured with the laser device; and a spatial image formed on a portion of the un-patterned phosphor plate configured by a modulation of the laser and movement of the scanning mirror device. 120.-. (canceled)21. A method of using an optical engine apparatus for selective resolution , the method comprising: forming a first spatial image having a first resolution on a first portion of the un-patterned phosphor plate by a modulation of the laser diode device and movement of the scanning mirror device;', 'forming a second spatial image having a second resolution on a second portion of the un-patterned phosphor plate, the second resolution being different than the first resolution,, 'in the optical engine apparatus comprising: a laser diode device, characterized by a wavelength; a lens coupled to an output of the laser diode device; a scanning mirror device operably coupled to the laser diode device; an un-patterned phosphor plate coupled to the scanning mirror device and configured with the laser diode device; and a controller coupled to the laser diode device and the scanning mirror device;'}wherein the second spatial image is formed concurrently with the first spatial image on the un-patterned phosphor plate.22. The method of wherein the un-patterned phosphor plate comprises a multi-element phosphor species claim 21 , the multi-element phosphor species comprises a red phosphor claim 21 , a green phosphor claim 21 , and a blue phosphor.23. The method of wherein the un-patterned phosphor plate ...

IMAGE SIGNAL PROCESSING FOR REDUCING LENS FLARE

Flare compensation includes receiving a first image and a second image; converting the first and the second images from an RGB domain to a YUV domain; obtaining an intensity differences profile along a stitch line between the first and the second images, where the intensity differences profile is obtained for the Y component; obtaining a dark corner intensity differences profile between the first and the second images based on a relative illumination of an area outside a first image circle of the first image and a second image circle of the second image, where the dark corner intensity differences profile is obtained for the Y component; obtaining a flare profile using the intensity differences profile and the dark corner intensity differences profile; converting the flare profile of the Y component to an RGB flare profile; and modifying one of the first or second images based on the RGB flare profile. 1. A method for flare compensation in images , comprising:receiving a first image and a second image;converting the first image from an RGB domain to a YUV domain, wherein Y corresponds to a luminance (Y) component;converting the second image from the RGB domain to the YUV domain;obtaining an intensity differences profile along a stitch line between the first image and the second image, wherein the intensity differences profile is obtained for the Y component;obtaining a dark corner intensity differences profile between the first image and the second image based on a relative illumination of an area outside a first image circle of the first image and a second image circle of the second image, wherein the dark corner intensity differences profile is obtained for the Y component;obtaining a flare profile using the intensity differences profile and the dark corner intensity differences profile, wherein the flare profile is for the Y component;converting the flare profile of the Y component to an RGB flare profile; andmodifying the first image based on the RGB flare ...

Encoding Video Captured in Low Light

Apparatus comprising an encoder configured to encode a video signal captured from a camera, and a low-light enhancement module configured to apply a low-light enhancement to the video signal. The low-light enhancement is performed in a colour space comprising two colour channels representing colour, and an achromatic channel representing light level. The enhancement comprises: detecting at least a first classification indicative of disturbance in the video signal due to capture in low light; and in response to detecting this classification, applying a low-light processing operation to at least one of the colour channels to reduce a number of bits incurred by colour in the encoding, such that an increased number of bits is spent on the achromatic channel when encoded by the encoder.

Color Parameter Adjustment Based on the State of Scene Content and Global Illumination Changes

An embodiment of a semiconductor package apparatus may include technology to determine first scene chromaticity information for a frame of a video sequence, determine second scene chromaticity information for another frame of the video sequence, determine a scene content change based on the first and second scene chromaticity information, and determine a global illumination change based on the first and second scene chromaticity information. Other embodiments are disclosed and claimed. 1. An electronic processing system , comprising:a processor;memory communicatively coupled to the processor; and determine first scene chromaticity information for a frame of a video sequence,', 'determine second scene chromaticity information for another frame of the video sequence,', 'determine a scene content change based on the first and second scene chromaticity information, and', 'determine a global illumination change based on the first and second scene chromaticity information., 'logic communicatively coupled to the processor to2. The system of claim 1 , wherein the logic is further to:distinguish the global illumination change from the scene content change.3. The system of claim 1 , wherein the logic is further to:determine first illumination-variant information and first illumination-invariant information for the first scene chromaticity information; anddetermine second illumination-variant information and second illumination-invariant information for the second scene chromaticity information.4. The system of claim 3 , wherein the logic is further to:determine illumination-variant match information based on the first illumination-variant information with the second illumination-variant information;determine illumination-invariant match information based on the first illumination-invariant information with the second illumination-invariant information; anddetermine the global illumination change based on the illumination-variant match value and the illumination-invariant ...

Systems and Methods for Generating a Digital Image

A system, method, and computer program product for generating a digital image is disclosed. The system includes a first image sensor configured to capture a first image that includes a plurality of chrominance values, a second image sensor configured to capture a second image that includes a plurality of luminance values, and an image processing subsystem configured to generate a resulting image by combining the plurality of chrominance values with the plurality of luminance values. The first image sensor and the second image sensor may be distinct image sensors optimized for capturing chrominance images or luminance images. 1. A system , comprising:a first image sensor configured to capture a first image that includes a plurality of chrominance values;a second image sensor configured to capture a second image that includes a plurality of luminance values; andan image processing subsystem configured to generate a resulting image by combining the plurality of chrominance values with the plurality of luminance values.2. The system of claim 1 , further comprising:a first lens that focuses light from a photographic scene onto the first image sensor, anda second lens that focuses light from the photographic scene onto the second image sensor.3. The system of claim 1 , further comprising a lens that focuses light from a photographic scene onto a beam splitter that is configured to split the light from the photographic scene onto the first image sensor and the second image sensor.4. The system of claim 1 , wherein the first image sensor comprises a first portion of photodiodes included in a photodiode array and the second image sensor comprises a second portion of photodiodes included in the photodiode array.5. The system of claim 1 , wherein the first image sensor and the second image sensor sample images utilizing a global shutter operation.6. The system of claim 1 , wherein the first image sensor and the second image sensor sample images utilizing a rolling shutter ...

Signal processing apparatus, information processing method, and program

The luminance of a projected picture derived from an input picture is optimized in a manner suppressing the reduction of contrast in the projected picture. A signal processing apparatus includes a compensation coefficient application section configured to apply a posterior degradation compensation coefficient to a picture input signal input to a picture projection section, the posterior degradation compensation coefficient being based on scattered light caused by the picture projection section in a picture projected by the picture projection section.

Methods to Compensate Manufacturing Variations and Design Imperfections in a Display Device

A display device includes (a) a non-volatile memory containing corrective data for compensating input image data received; (b) display hardware receiving control and data signals for displaying an image; and (c) an image processing circuit that retrieves the corrective data from the non-volatile memory to generate the data signals for the display hardware, after applying the corrective data to each color component of each pixel in the input image data.

IMAGE PICKUP APPARATUS, INFORMATION PROCESSING SYSTEM, MAT, AND IMAGE GENERATION METHOD

A mat for an image pickup apparatus, where the image pickup apparatus operates to recognize a real object, the mat includes: a play field that defines a bottom region of a space in which the real object is placed; and a calibration chart located in the space and having a plurality of color regions in which respective luminances thereof differ from one another, where: the image pickup apparatus: (i) obtains data of a picked up image of the space in which the real object is located; and (ii) evaluates the picked up image and adjusts at least one of an image pickup condition in which the picked up image of the space is taken, and a processing condition in which the data are analyzed to recognize the real object, and at least one of the image pickup condition and the processing condition are adjusted based on color information in the data of the picked up image resulting from the plurality of color regions of the calibration chart. 1. A mat for an image pickup apparatus , where the image pickup apparatus operates to recognize a real object , the mat comprising:a play field that defines a bottom region of a space in which the real object is placed; anda calibration chart located in the space and having a plurality of color regions in which respective luminances thereof differ from one another, wherein:the image pickup apparatus: (i) obtains data of a picked up image of the space in which the real object is located; and (ii) evaluates the picked up image and adjusts at least one of an image pickup condition in which the picked up image of the space is taken, and a processing condition in which the data are analyzed to recognize the real object, andat least one of the image pickup condition and the processing condition are adjusted based on color information in the data of the picked up image resulting from the plurality of color regions of the calibration chart.2. The mat according to claim 1 , wherein the calibration chart includes a color region having a luminance ...

SYSTEMS, METHODS, AND APPARATUSES FOR VIDEO PROCESSING

Systems, methods, and apparatuses are described for processing video. Encoded video data may be determined from uncompressed video data. A chrominance component for a portion of the encoded video data may be determined that references another portion of the encoded video data. A luma component of the portion of the encoded video data may be determined to correspond with the luma component of the corresponding portion of the uncompressed video data. 1. A method comprising:receiving uncompressed video data comprising a plurality of frames; determining a first chrominance component of a first pixel of the at least a portion of the frame, wherein the first chrominance component of the first pixel is based on a first chrominance component of an encoded second pixel, and', 'determining a luma component of the first pixel, wherein the luma component of the first pixel corresponds to a luma component of a corresponding pixel from the uncompressed video data; and, 'encoding at least a portion of a frame of the plurality of frames, wherein the encoding the at least a portion of the frame comprisesoutputting the encoded at least a portion of the frame.2. The method of claim 1 , wherein the encoding the at least a portion of the frame further comprises:determining a second chrominance component of the first pixel, wherein the second chrominance component of the first pixel is based on a second chrominance component of the second pixel.3. The method of claim 1 , wherein the second pixel is from the frame of the plurality of frames.4. The method of claim 1 , wherein the second pixel is from a second frame of the plurality of frames.5. The method of claim 1 , wherein the encoding the at least a portion of the frame further comprises:determining a second chrominance component of the first pixel, wherein the second chrominance component of the first pixel is based on a chrominance component of an encoded third pixel.6. The method of claim 1 , wherein the determining the first ...

CONTENT ADAPTIVE LENS SHADING CORRECTION METHOD AND APPARATUS

Methods and apparatus for providing adaptive lens shading correction in at least a portion of a shaded image frame perform luminance lens shading correction for a portion of the shaded image frame and detect a color flat area in the shaded image. The methods and apparatus generate a frequency-based color shading profile that includes color shading parameters including an amplitude parameter and phase parameter corresponding to hue distributions from experimental shading data and generate an unshaded image by performing color shading correction on the detected color flat areas of the shaded image frame using the color shading parameters.

MULTI-SENSOR SYSTEM

In some implementations, a system may obtain image data associated with a scene. The system may obtain multispectral data associated with the scene. The system may identify one or more objects depicted by the image data. The system may determine representative optical properties of the one or more objects. The system may identify, based on at least one of the image data or the multispectral data, captured optical properties of the one or more objects. The system may generate a color corrected image. The system may provide the color corrected image to a user device for display by the user device.

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM

There is provided an image processing apparatus. A setting unit sets a correction region in an object of an image. An acquisition unit acquires normal information relating to the correction region. A determination unit determines, based on the normal information, a parameter of a virtual light source that performs virtual light irradiation on the object. A correction unit corrects the image such that light irradiation by the virtual light source is applied. 1. An image processing apparatus comprising at least one processor and/or at least one circuit which function as:a setting unit configured to set a correction region in an object of an image;an acquisition unit configured to acquire normal information relating to the correction region;a determination unit configured to determine, based on the normal information, a parameter of a virtual light source that performs virtual light irradiation on the object; anda correction unit configured to correct the image such that light irradiation by the virtual light source is applied.2. The image processing apparatus according to claim 1 ,wherein the normal information includes information indicating a plurality of normals corresponding to a plurality of positions in the correction region, andthe determination unit determines a representative normal based on the plurality of normals, and determines the parameter based on the representative normal.3. The image processing apparatus according to claim 2 ,wherein a direction of the representative normal is an average value, a median value or a mode value of directions of the plurality of normals.4. The image processing apparatus according to claim 2 ,wherein the representative normal passes through a centroid of the correction region.5. The image processing apparatus according to claim 1 ,wherein the normal information includes information indicating a representative normal which is a normal at a centroid of the correction region, andthe determination unit determines the ...

IMAGE PROCESSING APPARATUS, CONTROL METHOD, AND COMPUTER-READABLE MEDIUM

An image processing apparatus which corrects color balance of an image in image data captured by an image capturing apparatus having a color balance correction function, the apparatus comprises a light source estimation unit configured to estimate a capturing light source of the image based on a color value of an object; a first color conversion unit configured to perform first color conversion of converting, based on the capturing light source and the color value, the image into an image in which color balance correction applied depending on the image capturing apparatus that has captured the image data containing the image is weakened; and a second color conversion unit configured to perform second color conversion for the image having undergone the first color conversion, by using an adaptation rate corresponding to a color value defined based on chromatic adaptation of a man under the capturing light source. 111.-. (canceled)12. An image processing apparatus comprising:an estimation unit configured to estimate a color temperature of a capturing light environment of an image based on a highlight color of the image; anda color conversion unit configured to perform color conversion for the image, by using a degree of chromatic adaptation determined based on the color temperature of the capturing light environment estimated by the estimation unit.13. The apparatus according to claim 12 , wherein the degree of chromatic adaptation is decreased as a difference between the color temperature of the capturing light environment and a predefined color temperature increases.14. The apparatus according to claim 13 , wherein a decrease of the degree of chromatic adaptation is lower in a case where the color temperature of the capturing light environment is greater than or equal to the predefined color temperature than in a case where the color temperature of the capturing light environment is less than the predefined color temperature.15. The apparatus according to claim 12 , ...

DISPLAY CONTROL DEVICE, DISPLAY APPARATUS, TELEVISION RECEIVER, CONTROL METHOD FOR DISPLAY CONTROL DEVICE, AND RECORDING MEDIUM

Color noise in a low luminance region of an image is reduced without reducing an information amount of the image. A noise reduction apparatus () includes a saturation correction unit () configured to reduce saturation of a pixel having luminance lower than luminance corresponding to a first value according to luminance of an image to be displayed on a television set () while the luminance of the pixel is maintained. 1. A display control device comprising:a saturation changing unit configured to reduce saturation of a pixel having luminance lower than luminance corresponding to a first value according to luminance of an image to be displayed while the luminance of the pixel is maintained.2. The display control device according to claim 1 , further comprising:a maximum value specification unit configured to specify a maximum value of the luminance of the image, whereinthe first value is a value that amounts to a prescribed ratio with respect to the maximum value.3. The display control device according to claim 2 , whereinthe prescribed ratio is small when a difference between the maximum value of the luminance of the image and a maximum value of luminance of a content including the image is large, the maximum value of the luminance of the content being pre-configured in the content, andthe prescribed ratio is large when the difference between the maximum value of the luminance of the image and the maximum value of the luminance of the content is small.4. The display control device according to claim 2 , whereinthe prescribed ratio is changed in accordance with an operation performed by a user.5. The display control device according to claim 4 , whereina user interface for changing the prescribed ratio is displayed on a display apparatus.6. The display control device according to claim 1 , whereinthe saturation changing unit reduces saturation of a pixel to 0, the pixel having luminance included within a range of 0 to a second value, the second value being a value ...

SYSTEMS AND METHODS FOR SENSOR-INDEPENDENT ILLUMINANT DETERMINATION

Systems and methods for sensor-independent illuminant determination are provided. In one embodiment of the method, the method includes receiving one or more training images in raw-RGB format; generating an input histogram from each of the inputted raw images; generating a learned mapping matrix that map raw images to a learned mapping space by passing the one or more input histograms to a trained first machine learning model; generating one or more mapped images by applying the learned mapping matrix to the one or more training images; generating a mapped histogram from each of the mapped images; and determining the result illuminant by passing the one or more mapped histograms as input into a second machine learning model. A final illuminant for an input image can be determined by applying the result illuminant to the input color space of the input image. 1. A computer-implemented method for determining an illuminant for an input image , the method comprising:receiving the input image in raw-RGB format comprising an input color space;determining a final illuminant by applying a result illuminant to the input color space, the result illuminant having been determined from a learned mapping space; andoutputting the final illuminant.2. The method of claim 1 , wherein the result illuminant having been determined from a sensor-independent color space claim 1 , comprising:receiving a plurality of training images in raw-RGB format;generating the learned mapping space by passing a color distribution of each of the plurality of training images to a trained first machine learning model;generating a plurality mapped images by applying the learned mapping space to each of the plurality of training images; anddetermining the result illuminant by passing a color distribution of each of the plurality of mapped images as input into a second machine learning model.3. The method of claim 2 , wherein the color distribution of each of the plurality of training images comprises an input ...

COLOR SPACE AND DECODER FOR VIDEO

Because we needed a new improved and very different color encoding space for being able to faithfully encode the presently emerging high dynamic range video for good quality rendering on emerging HDR displays such as the SIM2 display, the video encoder () with an input () to obtain a video from a video source () wherein pixel colors are encoded in an (XYZ) color encoding, the video encoder comprising an opto-electronic conversion unit () arranged to convert the luminances (Y) of the pixel colors into lumas (Y′) with a predetermined code allocation function (F), characterized in that the video encoder comprises a chromaticity determination unit (), which is arranged to encode chromaticities (u″,v″) of pixel colors with lumas (Y′) below a predetermined threshold luma (E′) with a mathematical chromaticity definition which yields a maximum encodable saturation (S_bL) for a particular hue for pixel colors with a luma below the predetermined threshold luma (E′) which is lower than a maximum encodable saturation (S_bH) for the particular hue for a pixel color with a luma above the predetermined threshold luma (E′), and a constant maximum encodable saturation (S_bH) for pixels with colors of a particular hue and a luma equal to or larger than the predetermined threshold luma (E′). 2. (canceled)3. A video encoder as claimed in claim 1 , comprising a spatial subsampling unit arranged to reduce a spatial resolution of the color information claim 1 , which unit is arranged to perform the subsampling by a factor (ss) on linear pixel colors claim 1 , and to output a subsampled image of pixel colors as input for the chromaticity determination unit.4. A video encoder as claimed in claim 1 , in which the lumas are encoded in a word of 8 claim 1 , 10 claim 1 , 12 or 14 bits.5. A video encoder as claimed in claim 1 , in which the chromaticities are encoded in a word of 6 claim 1 , 7 claim 1 , 8 claim 1 , 9 claim 1 , 10 claim 1 , 11 claim 1 , or 12 bits for each chromaticity coordinate ...

CIRCUIT FOR CONTROLLING IMAGE CAPTURING DEVICE AND ASSOCIATED CONTROL METHOD

A control method for an image capturing device is disclosed. The image capturing device includes a sensing circuit, an analog gain adjustment circuit using an analog gain, and an analog-to-digital converter (ADC). The control method includes: using a digital gain adjustment circuit to adjust, according to a digital gain, a digital image generated by the ADC to generate an adjusted digital image; generating the analog gain and the digital gain according to the digital image, and calculating intensity information of an infrared component in the digital image; and determining an image adjustment parameter according to the analog gain, the digital gain and the intensity information of the infrared component to perform image processing on the adjusted digital image. 1. A circuit for controlling an image capturing device , the image capturing device comprising a sensing circuit , an analog gain adjustment circuit and an analog-to-digital converter (ADC) , the sensing circuit providing an input image having an infrared component , the analog gain adjustment circuit adjusting the input image according to an analog again to generate an adjusted input image , the ADC performing analog-to-digital conversion on the adjusted input image to generate digital image data; the circuit comprising:a digital gain adjustment circuit, adjusting the digital image data according to a digital gain to generate adjusted digital image data;a calculation and control circuit, generating the analog gain and the digital gain according to the digital image data, and calculating intensity information of the infrared component;a look-up table (LUT) circuit, determining an image adjustment parameter according to the analog gain, the digital gain, and the intensity information of the infrared component; andan image processing circuit, performing image processing on the adjusted digital image data according to the image adjustment parameter to generate output image data.2. The circuit according to claim ...

DATA PROCESSING METHOD AND DEVICE FOR ADAPTIVE IMAGE PLAYING

According to one embodiment of the present invention, a data processing method comprises the steps of generating an uncompressed data signal and transmitting the uncompressed data signal and an InfoFrame, wherein the InfoFrame is a data transmission structure for transmitting information to a sink device receiving the uncompressed data signal, and includes a color volume descriptor for describing information on color volume, and the InfoFrame includes type information for indicating the type of color volume according to an object of the color volume, color volume type information for indicating the type of color volume according to a method of defining the color volume, and color space type information for indicating the type of color space in which the color volume is expressed. 1. A data processing method comprising:generating an uncompressed data signal; andtransmitting the uncompressed data signal and an InfoFrame,wherein the InfoFrame is a data transmission structure for transmitting information to a sink device receiving the uncompressed data signal, and includes a color volume descriptor for describing information on color volume,wherein the InfoFrame includes type information for indicating a type of color volume according to a target of the color volume, color volume type information for indicating a type of color volume according to a method for defining the color volume, and color space type information for indicating a type of color space in which the color volume is expressed,wherein the color volume corresponds to one of a content color volume for indicating a color volume of a content in accordance with the type information, a mastering display color volume for indicating a color volume of a mastering display used for mastering of the content, a display color volume for indicating a color volume of a display recommended for playback of the content, and a container color volume for indicating a color volume of a container transmitting the content, ...

Image processing method and image processing device

A bad pixel correction method for an image is provided. The bad pixel correction method includes the steps of determining whether each of pixels of a predetermined block in the image is a bad pixel sequentially; when a current pixel of the block is determined to be bad and a temperature value is higher than a threshold, re-determining that at least one previously determined pixel in the predetermined block to be bad; and correcting the current pixel and the previously determined pixel, wherein the previously determined pixel is adjacent to the current pixel

METHOD AND APPARATUS FOR GENERATING HIGH DYNAMIC RANGE FRAME THROUGH WHITE BALANCE COMPENSATION THAT USES WHITE BALANCE GAIN TABLE GENERATED FROM COMBINING MULTIPLE SETS OF WHITE BALANCE GAIN SETTINGS

An image processing method includes: analyzing, by a white balance gain estimation circuit, a plurality of exposure frames with different exposures to generate a plurality of sets of white balance gain settings; combining the plurality of sets of white balance gain settings to generate a white balance gain table; applying the white balance gain table to the plurality of exposure frames to generate a plurality of white balance compensated frames; and generating a high dynamic range (HDR) frame by performing pixel fusion according to pixel data derived from the plurality of white balance compensated frames. 1. An image processing method comprising:analyzing, by a white balance gain estimation circuit, a plurality of exposure frames with different exposures to generate a plurality of sets of white balance gain settings;combining the plurality of sets of white balance gain settings to generate a white balance gain table;applying the white balance gain table to the plurality of exposure frames to generate a plurality of white balance compensated frames; andgenerating a high dynamic range (HDR) frame by performing pixel fusion according to pixel data derived from the plurality of white balance compensated frames.2. The image processing method of claim 1 , wherein analyzing the plurality of exposure frames with different exposures to generate the plurality of sets of white balance gain settings comprises:for an exposure frame included in the plurality of exposure frames, obtaining statistics of different color components in the exposure frame, and generating a set of white balance gain settings according to the statistics of color components in the exposure frame.3. The image processing method of claim 1 , wherein analyzing the plurality of exposure frames with different exposures to generate the plurality of sets of white balance gain settings comprises:for an exposure frame included in the plurality of exposure frames, performing feature extraction upon the exposure ...

CAMERA DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME

The present disclosure relates to a camera device, and an electronic apparatus including the same. The camera device and an electronic apparatus including the same according to an embodiment of the present disclosure a color camera; and a processor configured to receive a first color pattern image from the color camera, generate a grayscale-based transmission map based on the first color pattern image, and generate a high dynamic range color image based on the grayscale-based transmission map. Accordingly, it is possible to generate the high dynamic range color image based on the color pattern image obtained from the color camera. 1. A camera device comprising:a color camera; anda processor configured to receive a first color pattern image from the color camera, generate a grayscale-based transmission map based on the first color pattern image, and generate a high dynamic range color image based on the grayscale-based transmission map.2. The camera device of claim 1 , wherein the processor is configured to:generate the grayscale-based transmission map based on the first color pattern image,generate a second color pattern image based on the transmission map, andgenerate the high dynamic range color image based on the second color pattern image.3. The camera device of claim 2 , wherein the processor is configured to:generate a grayscale-based luminance contrast map based on the first color pattern image or the transmission map,generate the second color pattern image based on the luminance contrast map and the transmission map, andgenerate the high dynamic range color image based on the second color pattern image.4. The camera device of claim 2 , wherein the processor is configured to:generate grayscale-based first and second function characteristic maps based on the first color pattern image or the transmission map,generate a first function-based color pattern image and a second function-based color pattern image based on the first function characteristic map and the ...

IMAGE COLOR ADJUSTMENT METHOD AND APPARATUS AND UNMANNED AERIAL VEHICLE

Embodiments of the disclosure relate to the field of image processing technologies, and disclose an image color adjustment method and apparatus and an unmanned aerial vehicle (UAV). The image color adjustment method is applicable to an image collection device. The method includes: determining a current photographing parameter of the image collection device during collection of a to-be-processed image, where the current photographing parameter includes a current exposure and a current color temperature; selecting, according to the current exposure and the current color temperature, an optimal color channel gain matching the current exposure and the current color temperature; and adjusting a color of the to-be-processed image according to the optimal color channel gain. 1. An image color adjustment method , applicable to an image collection device of an unmanned aerial vehicle (UAV) , the method comprising:determining a current photographing parameter of the image collection device during collection of a to-be-processed image, wherein the current photographing parameter comprises a current exposure and a current color temperature;selecting, according to the current exposure and the current color temperature, an optimal color channel gain matching the current exposure and the current color temperature; andadjusting a color of the to-be-processed image according to the optimal color channel gain.2. The method according to claim 1 , wherein each candidate color temperature index interval corresponds to at least two candidate exposures claim 1 , and each of the at least two candidate exposures corresponds to one candidate color channel gain; andthe selecting, according to the current exposure and the current color temperature, an optimal color channel gain matching the current exposure and the current color temperature comprises:determining, as a target color temperature index interval, a candidate color temperature index interval comprising the current color temperature; ...

Multi-Band YCbCr Locally-Adaptive Noise Modeling And Noise Reduction Based On Scene Metadata

Image enhancement is achieved by separating image signals, e.g. YCbCr image signals, into a series of frequency bands and performing locally-adaptive noise reduction on bands below a given frequency but not on bands above that frequency. The bands are summed to develop the image enhanced signals. The YCbCr, multi-band locally-adaptive approach to denoising is able to operate independently—and in an optimized fashion—on both luma and chroma channels. Noise reduction is done based on models developed for both luma and chroma channels by measurements taken for multiple frequency bands, in multiple patches on the ColorChecker chart, and at multiple gain levels, in order to develop a simple yet robust set of models that may be tuned off-line a single time for each camera and then applied to images taken by such cameras in real-time without excessive processing requirements and with satisfactory results across illuminant types and lighting conditions. 1. A non-transitory program storage device comprising instructions stored thereon to cause one or more processors to:receive signals from an imager;process the signals received from the imager;separate at least one of the processed signals into a plurality of bands;apply noise reduction to all bands below a first frequency,wherein the instructions to apply comprise instructions to utilize an estimated noise level from a noise model, andwherein the noise model is locally-adaptive and estimates an overall gain level for pixels in the received signals based, at least in part, on one or more of the following: lens shading compensation gains for the respective pixels, local tone mapping curve data for the respective pixels, and image fusion strength information for the respective pixels;sharpen all bands below the first frequency; andsum all of the bands to produce an enhanced image signal.2. The non-transitory program storage device of claim 1 , wherein the processed signals are luma and chroma signals claim 1 , and wherein the ...

IMAGE COMPRESSION

The invention provides methods that improve image compression and/or quality within the JPEG process by using a low-pass filter to remove high frequency components from image data, which removes blocking artifacts. Preferred embodiments apply the low-pass filter to the Chroma components after decompression prior to conversion into RGB color space. 1. A method for processing image data , the method comprising:obtaining a JPEG compressed image corresponding to an original image; anddecompressing the JPEG compressed image to produce an output image via a decompression operation that includes a low pass filter.2. The method of claim 1 , wherein decompressing the JPEG image comprises decoding the image to produce a YCbCr image having Luma and Chroma components.3. The method of claim 2 , wherein the low pass filter is applied to the Chroma components of the YCbCr image to produce a filtered YCbCr image.4. The method of claim 3 , further comprising transforming the filtered YCbCr image into the RGB color space to produce the output image.5. The method of claim 1 , wherein the output image is substantially similar to the original image.6. The method of claim 1 , wherein obtaining the JPEG compressed image comprises:receiving the original image; andperforming a discrete cosine transform (DCT) and quantization step on image data from the original image.7. The method of claim 6 , further comprising transforming the original image from the RGB color space into the YCbCr color space and blocking the image into blocks of pixels.8. The method of claim 6 , wherein the DCT is a type-II DCT.9. The method of claim 6 , wherein quantizing the DCT coefficients includes scaling the DCT coefficients and rounding the scaled DCT coefficients to the nearest integers.10. The method of claim 6 , further comprising compressing the quantized claim 6 , filtered DCT coefficients via entropy encoding to create the JPEG compressed image.11. The method of claim 10 , wherein entropy coding includes ...

Method for driving display including curved display area, display driving circuit supporting the same, and electronic device including the same

An electronic device is provided, The electronic device may include a display, a processor operatively connected to the display and configured to generate display data to be output on the display, a display driver integrated circuit configured to output, on the display, the display data received from the processor, wherein the display driver integrated circuit is configured to apply a color transformation value of the same or different magnitude to display data based on a distance from a specified point of the display to a location where the display data are to be displayed.

IMAGE PICKUP APPARATUS AND IMAGE PROCESSING METHOD

An image pickup apparatus includes an image pickup device including a plurality of pixels arrayed at a predetermined pixel pitch, a shift mechanism configured to perform a pixel shift in a movement amount which is a non-integral multiple of the pixel pitch, a microcomputer configured to cause the image pickup device to pick up an image at pixel shifting positions to respectively acquire a plurality of pieces of image data, a synthesis processing section configured to synthesize the acquired plurality of pieces of image data to generate composite image data with a high resolution, and an image processing section configured to determine an edge enhancement parameter based on a characteristic relating to a pixel opening of the composite image data and perform edge enhancement processing for the composite image data. 1. An image pickup apparatus comprising:an image pickup device including a plurality of pixels arrayed in a two-dimensional form at a predetermined pixel pitch;a pixel shift section configured to perform a pixel shift so that a relative position in a direction of the array in the two-dimensional form between the image pickup device and a light flux received by the image pickup device becomes a plurality of relative positions, which differ in movement amounts, including a relative position in a movement amount which is a non-integral multiple of the pixel pitch;an image pickup control section configured to cause the image pickup device to perform an image pickup operation at the plurality of respective relative positions to acquire a plurality of pieces of image data;an image synthesis section configured to synthesize the plurality of pieces of image data acquired by the image pickup control section, to generate composite image data with a higher resolution than resolution of image data obtained from the image pickup device; andan image processing section configured to determine an edge enhancement parameter based on a characteristic relating to a pixel ...

SYSTEMS AND METHODS FOR GENERATING A DIGITAL IMAGE

A system, method, and computer program product for generating a digital image is disclosed. The system includes a first image sensor configured to capture a first image that includes a plurality of chrominance values, a second image sensor configured to capture a second image that includes a plurality of luminance values, and an image processing subsystem configured to generate a resulting image by combining the plurality of chrominance values with the plurality of luminance values. The first image sensor and the second image sensor may be distinct image sensors optimized for capturing chrominance images or luminance images. 1. A system , comprising:a first image sensor configured to capture a first ambient image comprising a first plurality of chrominance values, and a first strobe image comprising a second plurality of chrominance values;a second image sensor configured to capture a second ambient image comprising a first plurality of luminance values, and a second strobe image comprising a second plurality of luminance values;an image processing subsystem configured to generate a first resulting image by combining the first plurality of chrominance values and the first plurality of luminance values;the image processing subsystem configured to generate a second resulting image by combining the second plurality of chrominance values and the second plurality of luminance values; andthe image processing subsystem configured to generate a third resulting image by combining the first resulting image and the second resulting image.2. The system of claim 1 , wherein the first ambient image and the second ambient image are captured simultaneously.3. The system of claim 1 , wherein the first strobe image and the second strobe image are captured simultaneously.4. The system of claim 1 , wherein the first ambient image is captured with a first set of exposure parameters claim 1 , and the first strobe image is captured with a second claim 1 , different set of exposure ...

ARTICULATED ARM COORDINATE MEASURING MACHINE HAVING A COLOR LASER LINE PROBE

A portable articulated arm coordinate measuring machine (AACMM) for measuring the coordinates of an object in space and a method of operating the AACMM is provided. The AACMM includes a laser line probe is having a projector and a camera, the projector projecting a line of light, the camera having a lens assembly and a sensor assembly. The sensor assembly having a filter disposed between a photosensitive array and the lens assembly. The filter has a plurality of red, green and blue pixels in a predetermined arrangement. A controller causes the camera to acquire a metrology image and a color image. 3D coordinates of points on a surface are determined based on the metrology image and a color is assigned to the points based on the color image. The exposure time for the color image is adjusted based on an Exposure To The Right or a Mid-gray color model. 1. A portable articulated arm coordinate measuring machine (AACMM) for measuring the coordinates of an object in space , comprising:a base;a manually positionable arm portion coupled to the base and having an end opposite the base;a measurement device coupled to the end;an electronic circuit that is operable to determine a position of the measurement device relative to a frame of reference;a laser line probe operably coupled to the end, the laser line probe having a projector and a camera, the projector being operable to project a line of light at one or more predetermined wavelengths, the camera having a lens assembly optically coupled to a sensor assembly, the sensor assembly having a photosensitive array and a filter disposed between the photosensitive array and the lens assembly, the filter having a plurality of red, green and blue pixels in a predetermined arrangement; anda controller operably coupled to the laser line probe, the controller being operable to cause the camera to acquire a metrology image and a color image, wherein the controller and the electronic circuit cooperate to determine the three dimensional ...

DISPLAY DEVICE AND METHOD

One or more embodiments of the present invention are directed to a display device including a display unit configured to output an image, a brightness converting unit configured to acquire a brightness corrected image by correcting brightness of the image, and a controller configured to detect a face included in the image, to acquire a color corrected image by applying a gain value to a color of the brightness corrected image according to whether the face is detected, and to output the color corrected image or the brightness corrected image through the display unit. 1. A display device comprising:a display configured to output an image;a brightness converter configured to acquire a brightness corrected image by correcting a brightness of the image; anda controller configured to:detect whether a face is included in the image;acquire a color corrected image by applying a gain value to a color of the brightness corrected image based on whether the face is detected; andoutput the color corrected image or the brightness corrected image through the display,wherein when the face is detected in the image, the controller is further configured to:extract a face detected region based on the detected face;acquire the gain value corresponding to a size of the face detected region;acquire the color corrected image by multiplying the color of the brightness corrected image by the gain value; andoutput the color corrected image through the display.2. The display device of claim 1 ,wherein the brightness converter is further configured to:acquire a plurality of brightness values, each of the brightness values corresponding to a respective unit pixel included in the image;acquire a plurality of corrected brightness values, each of the corrected brightness values corresponding to a respective brightness value of the brightness values, through a look-up table including a linear or nonlinear section; andacquire the brightness corrected image obtained by correcting each of the brightness ...

SIGNAL SYNTHESIS CIRCUIT

A signal synthesis circuit synthesizes luma signals and chroma signals output by a video signal source, to output composite video broadcast signals (CVBS). The signal synthesis circuit includes a first gain adjusting unit, a delay unit, and a second gain adjusting unit. The first gain adjusting unit receives and adjusts the gain of the luma signals from the video signal source, and the delay unit delays phases of the luma signals output by the first gain adjusting unit. The second gain adjusting unit receives and adjusts the gain of the chroma signals from the video signal source so that the luma signals output by the delay unit and the chroma signals output by the second gain adjusting unit can be synthesized into the CVBS. 1. A signal synthesis circuit comprising:a first gain adjusting unit configured to receive luma signals from a video signal source and adjust gains of the luma signals;a delay unit coupled to the first gain adjusting unit, the delay unit configured to delay phases of the luma signals output by the first gain adjusting unit, wherein the delay unit comprises a plurality of resonance oscillation units coupled in series; anda second gain adjusting unit coupled to the delay unit, the second gain adjusting unit configured to receive chroma signals from the video signal source and adjust gains of the chroma signals so that the phase delayed luma signals output by the delay unit and the chroma signals output by the second gain adjusting unit are synthesized into composite video broadcast signals (CVBS).2. The signal synthesis circuit of claim 1 , further comprising a direct current (DC) isolation unit claim 1 , wherein the DC isolation unit is configured to filter out DC interferences from the CVBS.3. The signal synthesis circuit of claim 2 , wherein the DC isolation unit comprises a capacitor claim 2 , a first end of the capacitor is coupled to a node between the delay unit and the second gain adjusting unit claim 2 , and a second end of the capacitor ...

SYSTEMS AND METHODS FOR CREATING FULL-COLOR IMAGE IN LOW LIGHT

Full-color images of low-light scenes are generated by the systems and methods described herein using only two light channels. An array of photosensitive pixels includes two sets of pixels, the first sensitive only to light associated with a first light channel, the second only to light associated with a second light channel. Thus the first set of pixels generate a first set of electrical signals in response to incident light within the first light channel, and the second set of pixels generate a second set of electrical signals in response to incident light within the second light channel. An image processor receives the first and second sets of electrical signals and generates a full-color image of the scene by processing only signals generated by the first and second sets of pixels. 120-. (canceled)21. A low-light color imaging system , comprising:a first photosensitive sensor configured to generate, in response to incident light from a scene, a first set of electrical signals indicative of a first light channel including a first spectrum of wavelengths of light, wherein the first photosensitive sensor includes a first array of photosensitive pixels that are enabled to detect the first spectrum of wavelengths of light;a second photosensitive sensor configured to generate, in response to incident light from the scene, a second set of electrical signals indicative of a second light channel including a second spectrum of wavelengths of light, wherein the second photosensitive sensor includes a second array of photosensitive pixels that are enabled to detect the second spectrum of wavelengths of light, and wherein the second spectrum of wavelengths of light comprises a different spectrum of wavelengths of light than the first spectrum; and receive the first set of electrical signals indicative of the first light channel and the second set of electrical signals indicative of the second light channel; and', 'generate a full-color image of the scene based on the first ...

COLOR CONVERSION

Colour conversion apparatus comprises mapping circuitry configured to map pixels of an input image having colour components in an input colour space to pixels of an mapped image having colour components in an output colour space, the input colour space and the output colour space being different colour spaces such that at least a subset of colours representable in the input colour space are not representable in the output colour space; processing circuitry configured to process the mapped image by detecting instances, in the colour components of pixels of the mapped image, of representations of negative amounts of a colour component and in response to such a detection in respect of a pixel under test, to increase all of the colour components of the pixel under test by an amount of at least the magnitude of the greatest magnitude negative amount of the colour components of that pixel under test; and output circuitry configured to generate pixels of an output image, having colour components in the output colour space, from pixels of the processed mapped image, the output circuitry being configured to inhibit colour components of pixels of the output image from exceeding a maximum representable colour amount. 1. Colour conversion apparatus comprising:mapping circuitry configured to map pixels of an input image having colour components in an input colour space to pixels of an mapped image having colour components in an output colour space, the input colour space and the output colour space being different colour spaces such that at least a subset of colours representable in the input colour space are not representable in the output colour space;processing circuitry configured to process the mapped image by detecting instances, in the colour components of pixels of the mapped image, of representations of negative amounts of a colour component and in response to such a detection in respect of a pixel under test, to increase all of the colour components of the pixel under ...

Advanced Multi-Band Noise Reduction

Techniques for de-noising a digital image using a multi-band noise filter and a unique combination of texture and chroma metrics are described. A novel texture metric may be used during multi-band filter operations on an image's luma channel to determine if a given pixel is associated with a textured/smooth region of the image. A novel chroma metric may be used during the the same multi-band filter operation to determine if the same pixel is associated with a blue/not-blue region of the image. Pixels identified as being associated with a smooth blue region may be aggressively de-noised and conservatively sharpened. Pixels identified as being associated with a textured blue region may be conservatively de-noised and aggressively sharpened. By coupling texture and chroma constraints it has been shown possible to mitigate noise in an image's smooth blue regions without affecting the edges/texture in other blue objects. 1. A multi-band noise reduction method , comprising:receiving an image, the image comprising a first type of channel and a plurality of other types of channels, each channel type being different;applying multi-band noise reduction to generate a multi-band pyramidal representation for each channel, wherein each channel's multi-band noise reduction is based on channel-specific and band-specific noise models;determining a texture metric value for the first channel type, the texture metric value based on the first channel type's multi-band pyramidal representation;determining a blue-chroma metric value based on the plurality of other channel types, the blue-chroma metric value based on the multi-band pyramidal representations of the plurality of other channel typesde-noising aggressively and sharpening conservatively at least some of the pixels in the image's first channel having a texture metric value indicative of a smooth region and a blue-chroma metric value indicative of a blue pixel;de-noising conservatively and sharpening aggressively at least some of ...

HIGH DYNAMIC RANGE TONE MAPPING

Embodiments herein disclose a tone mapping system that generates a base layer by filtering a frame in an HDR video. The tone mapping system then generates a tone curve using a tone mapping parameter derived from the base layer—e.g., a mean or maximum luminance value. Once the tone curve parameter is identified, the system performs temporal filtering to smooth out inconsistencies between the current value of the tone curve parameter and the values of tone curve parameter of at least one previous frame in the HDR video. The tone mapping system applies the temporally filtered tone curve to the base layer to generate a temporally coherent layer. The temporally coherent base layer can be combined with a detail layer derived from the HDR video to generate a frame of a tone mapped video. 1. A method , comprising:generating a base layer using a frame of a high dynamic range (HDR) video;deriving a tone curve parameter from the base layer;temporally filtering the tone curve parameter; andgenerating a temporally coherent base layer using a tone curve derived from the temporally filtered tone curve parameter.2. The method of claim 1 , further comprising:generating a detail layer by dividing the frame of the HDR video by the base layer.3. The method of claim 2 , further comprising:generating a frame of a tone mapped video by combining the detail layer with the temporally coherent base layer.4. The method of claim 1 , wherein generating the base layer comprises:spatially filtering the frame of the HDR video in at least two dimensions to generate the base layer.5. The method of claim 4 , wherein the frame of the HDR video is not temporally filtered when generating the base layer.6. The method of claim 1 , wherein generating the temporally coherent base layer using the tone curve compresses the color range of the frame of the HDR video.7. The method of claim 1 , wherein temporally filtering the tone curve parameter comprises:applying a first weight to a previously measured value of ...

SYSTEMS AND METHODS FOR PROCESSING LOW LIGHT IMAGES

Techniques and systems are provided for processing one or more low light images. For example, a short exposure image associated with one or more shutter speeds can be obtained. A long exposure image is also obtained, which is captured using a slower shutter speed than the one or more shutter speeds associated with the short exposure image. An output image can be generated by mapping color information from the long exposure image to the short exposure image. 1. A method of processing one or more low light images , the method comprising:obtaining a short exposure image, the short exposure image being associated with one or more shutter speeds;obtaining a long exposure image, the long exposure image being captured using a slower shutter speed than the one or more shutter speeds associated with the short exposure image; andgenerating an output image, wherein generating the output image includes mapping color information from the long exposure image to the short exposure image.2. The method of claim 1 , wherein mapping the color information from the long exposure image to the short exposure image includes applying an affine transform to the short exposure image claim 1 , the affine transform mapping one or more color moments between the long exposure image and the short exposure image claim 1 , wherein the one or more color moments are included in a three-dimensional tensor.3. The method of claim 2 , further comprising applying one or more three-dimensional filters to the three-dimensional tensor.4. The method of claim 2 , wherein the affine transform includes mean-variance matching claim 2 , and wherein the one or more color moments include a mean and a variance of pixels from the short exposure image and a mean and a variance of pixels from the long exposure image.5. The method of claim 4 , further comprising generating the three-dimensional tensor claim 4 , the three-dimensional tensor including a plurality of cells claim 4 , each cell including at least one mean of a ...

SUPPRESS PIXEL COLORATION ERRORS IN HDR VIDEO SYSTEMS

The present disclosure is directed to a process to partially or fully suppress, or limit, pixel coloration errors. These pixel coloration errors, represented by small noise values, can be introduced during signal processing of high dynamic range (HDR) video signals. Converting visual content to a half precision floating point representation, for example, FP16, can introduce small amounts of signal noise due to value rounding. The noise can be multiplied and accumulated during HDR signal processing resulting in visual artifacts and degraded image quality. The disclosure can detect these noise amounts in pixel color component values, and suppress, or partially suppress, the noise to prevent the noise from accumulating during subsequent HDR signal processing. 1. A method to suppress pixel color component noise in a high dynamic range (HDR) signal , comprising:converting a color value representation of a pixel to a color value representation having less precision, wherein said converting creates a noise level in one or more color component values of said pixel;comparing said color component values to a noise threshold for said pixel; andreducing, utilizing said comparing, one or more of said color component values of said pixel, wherein said noise threshold is computed from said noise level.2. The method as recited in claim 1 , wherein said reducing clamps said color component value to zero claim 1 , when said color component value is less than said noise threshold.3. The method as recited in claim 1 , wherein said reducing occurs claim 1 , during a processing of said HDR signal claim 1 , after a color space conversion (CSC) process and prior to a perceptual quantizer (PQ) inverse electro-optical transfer function (EOTF) process.4. The method as recited in claim 1 , wherein a spatial or temporal pixel processing is performed on said HDR signal.5. The method as recited in claim 1 , wherein said noise threshold utilizes a noise factor and a maximum value from said color ...

METHOD FOR PROCESSING A DIGITAL IMAGE, DEVICE, TERMINAL EQUIPMENT AND ASSOCIATED COMPUTER PROGRAM

A method for processing a digital image including image elements having a first luminance component. The first luminance component has a first value in a first predetermined interval. The display can render second values of second luminance components included in a second predetermined interval. The method includes: determining information representative of image brightness perceived by an observer, based on the first values of the first luminance component; calculating an expansion exponent as a function of the determined brightness information; transforming the first luminance components into the second luminance components, including calculating an intermediate luminance value by applying the calculated expansion exponent to the first luminance component value, multiplying the intermediate value by a length of the second interval, and obtaining the second value of the second luminance component based on the multiplied intermediate luminance value. The expansion exponent is based on a logarithm, of the determined brightness information. 1. A method comprising the following acts performed by a processing device:{'sub': '1', 'receiving at least one digital image, said image comprising image elements, an image element being associated with colour information represented in a first colour space comprising a first luminance component (Y) said first luminance component having a first value within a first range of predetermined values;'}processing the at least one digital image for rendering on a display device, said display device being adapted to restore second values of second luminance components of the image elements included in a second range of predetermined values, wherein the processing comprises:determining an information representative of a global luminosity level of the image perceived by an observer, based on the first values of the first luminance component of the elements of the image;calculating an expansion exponent (γ) as a function of the global ...

DISPLAY DEVICE, TELEVISION RECEIVER, DISPLAY METHOD, AND RECORDING MEDIUM

An image of an HDR signal, in which deterioration in luminance due to adjustment of white balance is suppressed while variations of a color of an image of an SDR signal is suppressed, is displayed. A television () that displays an image is which white balance is adjusted includes a determination unit () that determines whether an image signal is an HDR signal or an SDR signal, and a display control unit () that, in a case where the determination unit determines that the image signal is the HDR signal, changes gain of at least one primary color among primary colors to a value higher than a set value. 1. A display device that displays an image in which white balance is adjusted by setting a gain value of each of primary colors , the display device comprising:a determination unit that determines whether an image signal that has been input is a first image signal or a second image signal a possible luminance dynamic range of which is wider than that of the first image signal; anda display control unit that, in a case where the determination unit determines that the image signal is the second image signal, changes gain of at least one primary color among the primary colors to a value higher than a set value.2. The display device according to claim 1 , whereinthe display control unit changes, to a value higher than the set value, a gain value that is a gain value of at least one primary color among the primary colors and that is at a gradation value higher than a first predetermined gradation value, in the case where the determination unit determines that the image signal is the second image signal.3. The display device according to claim 2 , whereinthe display control unit changes the first predetermined gradation value in accordance with an operation by a user.4. The display device according to claim 1 , whereinthe display control unit changes a gain value of at least one primary color among the primary colors in accordance with an operation by a user.5. The display ...

IMAGE SYNTHESIS DEVICE AND IMAGE SYNTHESIS METHOD

An image synthesis device includes imaging unit () that photographs video, displayer () that displays the photographed video, and makeup image superimposing unit () that changes brightness of a makeup image superimposed with a face of the video on a pixel basis and superimposes the makeup image of which the brightness is changed on the face of the video, every time skin brightness of the face included in the video changes. Even if the brightness that illuminates the face changes, it is possible to synthesize the makeup image with an image familiar to the skin in real time. 1. An image synthesis device comprising:an imaging unit that photographs video;a displayer that displays the photographed video; anda makeup image superimposing unit that changes brightness of a makeup image to be superimposed with a face of the video on a pixel basis and superimposes the makeup image of which the brightness is changed on the face of the video, every time skin brightness of the face included in the video changes.2. The image synthesis device of claim 1 ,wherein the makeup image superimposing unit includesa skin brightness calculator that calculates skin brightness of a target pixel in a face region included in the video by averaging brightness of surrounding pixels having hue close to the target pixel, anda post-change makeup brightness calculator that calculates brightness of the makeup image according to a ratio of the calculated skin brightness with respect to skin brightness to be a reference, in a case where the calculated skin brightness has changed from the previously calculated skin brightness.3. The image synthesis device of claim 2 ,wherein the makeup image superimposing unit further includes a post-change makeup saturation calculator that calculates saturation of the makeup image according to a ratio of the calculated brightness of the makeup image with respect to the brightness of the makeup image to be a reference.4. The image synthesis device of claim 3 ,wherein the ...

Video transmission apparatus, video reception apparatus, video transmission method, and video transmission system

This video transmission apparatus includes: a first control unit that divides video data into a plurality of channels in units of one or more specified number of consecutive frames, and gives a change by a reversible method to the video data of a specific area in the frame of the video data of each channel, the specific area corresponding to the channel; and a plurality of first video transmission interfaces that each transmit the video data of each channel to which the change is given.

ADAPTIVE SHADING CORRECTION

The present disclosure provides an adaptive shading correction method for correcting an image for lens shading, including segmenting the image into a plurality of blocks of pixels and identifying hue-flat blocks with a relatively low hue variance, where the hue-flat blocks are clustered into at least one cluster based on a spatial distribution of the blocks. Selected modification parameters for modifying an average shading mesh are identified by modifying the average shading mesh along a plurality of dimensions using a plurality of modification parameters, and processing the at least one cluster with the average shading mesh as modified so as to identify the selected modification parameters. The average shading mesh is modified using the selected modification parameters to generate a shading correction mesh, which is used to correct the image for lens shading. 1. An adaptive shading correction method for correcting an image for lens shading , the adaptive shading correction method comprising:segmenting the image into a plurality of blocks of pixels;identifying hue-flat blocks of the plurality of blocks, the hue-flat blocks having a relatively low hue variance;clustering the hue-flat blocks into at least one cluster based on a spatial distribution of the hue-flat blocks; modifying the average shading mesh along a plurality of dimensions using a plurality of modification parameters, different ones of the plurality of modification parameters corresponding to a respective different dimension of the plurality of dimensions, and', 'processing the at least one cluster,', 'so as to identify the selected modification parameters;', 'modifying the average shading mesh using the selected modification parameters to generate a shading correction mesh; and', 'correcting the image for lens shading using the shading correction mesh., 'identifying selected modification parameters for modifying an average shading mesh by2. The adaptive shading correction method of claim 1 , comprising ...

SELECTIVE COLORIZATION OF THERMAL IMAGING

An example computing system comprises a processor and a storage device holding instructions executable by the processor to receive a thermal image acquired via a thermal imaging system, each pixel of the thermal image comprising an intensity level, and generate a histogram via binning pixels by intensity level. The instructions are further executable to, based at least on the histogram, determine a subset of pixels to colorize, colorize the subset of pixels to produce a selectively colorized image, and output the selectively colorized image. 1. A computing system , comprising:a processor; and receive a thermal image acquired via a thermal imaging system, each pixel of the thermal image comprising an intensity level;', 'generate a histogram via binning pixels by intensity level;', 'based at least on the histogram, determine a subset of pixels to colorize;', 'colorize the subset of pixels to produce a selectively colorized image;', 'receive a low-light image acquired via a low-light imaging system;', 'fuse the low-light image with the selectively colorized image to produce a fused image; and', 'output the fused image., 'a storage device holding instructions executable by the processor to'}2. The computing system of claim 1 , wherein the instructions are further executable to output the selectively colorized image together with the fused image.3. The computing system of claim 1 , wherein the instructions are executable to apply a local contrast enhancement algorithm on the thermal image to modify intensity levels of the pixels claim 1 , and create the histogram via binning the pixels after modifying the intensity levels of the pixels.4. The computing system of claim 1 , wherein the instructions are executable to determine the subset of pixels to colorize based on a user-selected intensity threshold that is applied to the histogram.5. The computing system of claim 1 , wherein the subset of pixels is a first subset of pixels claim 1 , the first subset comprising pixels ...

METHOD FOR PROCESSING IMAGE DATA, IMAGE DATA PROCESSING APPARATUS, AND IMAGE DATA PROCESSING SYSTEM

A method for processing image data according to an aspect of the present disclosure includes obtaining first image data indicating a hyperspectral image of a target captured in first background light, generating, on a basis of the first image data, first spectral data indicating an estimated spectrum of the first background light, and generating, from the first image data, at least one piece of second image data indicating at least one image of the target in at least one type of second background light, which is different from the first background light, using at least one piece of second spectral data indicating at least one spectrum of the at least one type of second background light and the first spectral data. 1. A method for processing image data , the method comprising:obtaining first image data indicating a hyperspectral image of a target captured in first background light;generating, on a basis of the first image data, first spectral data indicating an estimated spectrum of the first background light; andgenerating, from the first image data, at least one piece of second image data indicating at least one image of the target in at least one type of second background light, which is different from the first background light, using at least one piece of second spectral data indicating at least one spectrum of the at least one type of second background light and the first spectral data.2. The method according to claim 1 ,wherein the at least one type of second background light includes different types of second background light,wherein the at least one piece of second image data includes pieces of second image data, andwherein each of the pieces of second image data indicates a corresponding one of the at least one image of the target in a corresponding one of the different types of second background light.3. The method according to claim 2 ,wherein the different types of second background light include sunlight and one or more types of artificial light.4. The ...

IMAGE DECODING DEVICE AND IMAGE ENCODING DEVICE

An image decoding device () includes a transform coefficient decoding unit () configured to decode a transform coefficient for a transform tree included in a coding unit. In the transform tree, the transform coefficient decoding unit splits a transform unit corresponding to luminance and then decodes the transform coefficient related to the luminance, and does not split the transform unit corresponding to chrominance and decodes the transform coefficient related to the chrominance. 1a coding node (CN) information decoding circuit configured to perform processing of a coding tree syntax with a size of the coding node, decode a first flag (split_cu_flag) indicating whether the coding node is split, recursively perform processing of the coding tree syntax with half values of the size of the coding node in a case that the first flag is true; anda coding unit (CU) decoding circuit configured to perform processing of a coding unit syntax with a size of a coding unit in a case that the first flag is false, decode a second flag (split_luma_flag) indicating that a luminance transform unit is split, perform processing of a transform unit syntax related to a luminance transform unit with a half value of the size of the coding unit in a case that the second flag is true, store top left coordinates of the coding unit, decode a quantized prediction residual related to the luminance transform unit by using top left coordinates of the luminance transform unit, and decode a quantized prediction residual related to a chrominance transform unit by using the top left coordinates of the coding unit.. An image decoding device for decoding a picture for a coding node, the image decoding device comprising: The embodiments of the present invention relate to a prediction image generation device, an image decoding device, and an image encoding device.A video encoding device which generates coded data by coding a video, and a video decoding device which generates decoded images by decoding the ...

IMAGING DEVICE, METHOD AND SYSTEM OF PROVIDING FILL LIGHT, AND MOVABLE OBJECT

A system includes an image sensor configured to obtain consecutive image frames, an exposure parameter acquisition unit configured to obtain a current automatic exposure parameter of a current image frame of the consecutive image frames, and a fill light controller configured to adjust an illumination intensity of a fill light lamp for a next image frame based on the current automatic exposure parameter and a preset condition by increasing or decreasing the illumination intensity of the fill light lamp for the next image frame by a preset increment if the automatic exposure parameter does not satisfy the preset condition. The preset increment is pre-determined based on the current automatic exposure parameter. 1. A system , comprising:an image sensor configured to obtain consecutive image frames;an exposure parameter acquisition unit configured to obtain a current automatic exposure parameter of a current image frame of the consecutive image frames; anda fill light controller configured to adjust an illumination intensity of a fill light lamp for a next image frame based on the current automatic exposure parameter and a preset condition by increasing or decreasing the illumination intensity of the fill light lamp for the next image frame by a preset increment if the automatic exposure parameter does not satisfy the preset condition, wherein the preset increment is pre-determined based on the current automatic exposure parameter.2. The system of claim 1 , further comprising:an execution unit configured to direct the exposure parameter acquisition unit to repeatedly obtain the current automatic exposure parameter and to direct the fill light controller to repeatedly adjust the illumination intensity of the fill light lamp until the image sensor stops obtaining the consecutive image frames.3. The system of claim 1 , wherein the preset increment is a specific preset increment corresponding to a specific automatic exposure parameter range claim 1 , wherein the current ...

AUTO EXPOSURE FOR SPHERICAL IMAGES

Auto exposure processing for spherical images improves image quality by reducing visible exposure level variation along a stitch line within a spherical image. An average global luminance value is determined based on auto exposure configurations of first and second image sensors. Delta luminance values are determined for each of the image sensors based on the average global luminance value and a luminance variance between the image sensors. The auto exposure configurations of the image sensors are then updated using the delta luminance values, and the updated auto exposure configurations are used to capture images which are then combined to produce the spherical image. In some cases wherein updating the auto exposure configurations using the delta luminance values would breach a threshold representing a target luminosity for the scene, the use of the delta luminance values may be limited or those values may instead be discarded. 1. An image capture device , comprising:a first image sensor configured to capture a first image;a second image sensor configured to capture a second image, wherein the first image sensor and the second image sensor are arranged in opposing directions and have overlapping fields of view;a processor; and determine luminance values based on first auto exposure configurations of the first image sensor and based on second auto exposure configurations of the second image sensor;', 'determine an average global luminance value based on the luminance values;', 'determine delta luminance values for each of the first image sensor and the second image sensor based on the average global luminance value and the luminance values;', 'update the first auto exposure configurations and the second auto exposure configurations using the delta luminance values;', 'cause the first image sensor to capture the first image according to the updated first auto exposure configurations;', 'cause the second image sensor to capture the second image according to the ...

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

An apparatus has first and second generation units which generate, from input image data, color component data for luminance output and color component for color difference output, first and second convertors which converts tones of each piece of the color component data for luminance output and for color difference output, a combining unit combining each piece of the color component data obtained by the first and second convertors to generate respective pieces of combined color component data; a separation unit respectively separating luminance data and color difference data from the combined color component data; and a correction unit correcting a tone of each of the luminance data and color difference data. The second convertor has a characteristic for outputting a non-negative value in a range, of negative infinity to a positive threshold set in advance. 1. An image processing apparatus , comprising:a first generation unit configured to generate, from input image data, color component data of a predetermined color space for luminance output;a second generation unit configured to generate, from input image data, color component data of the predetermined color space for color difference output;a first conversion unit configured to convert a tone of each piece of the color component data for luminance output generated by the first generation unit;a second conversion unit configured to convert a tone of each piece of the color component data for color difference output generated by the second generation unit;a combining unit configured to combine each piece of the color component data obtained by the conversion by the first conversion unit and each piece of the color component data obtained by the conversion by the second conversion unit, and generate respective pieces of combined color component data;a separation unit configured to respectively separate luminance data and color difference data from each piece of color component data obtained by the combining unit; ...

IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD

An image processing device according to the present invention includes: a color space conversion unit that calculates brightness signals and color difference signals from RGB signals of two images of a single subject acquired under different image acquisition conditions; a color difference determination unit that determines whether or not the absolute value of the difference between the color difference signals of the two images calculated by the color space conversion unit is smaller than a predetermined threshold value; and a color averaging unit that, if the color difference determination unit determines that the absolute value of the difference between the color difference signals of the two images is smaller than the threshold value, averages the color difference signals of the two images and calculates average color difference signals. 1. An image processing device comprising:a color space conversion unit that calculates brightness signals and color difference signals from RGB signals of two images of a single subject acquired under different image acquisition conditions;a color difference determination unit that determines whether or not an absolute value of the difference between the color difference signals of the two images calculated by the color space conversion unit is smaller than a predetermined threshold value; anda color averaging unit that, if the color difference determination unit determines that the absolute value of the difference between the color difference signals of the two images is smaller than the threshold value, averages the color difference signals of the two images and calculates average color difference signals.2. The image processing device according to claim 1 , comprising: an RGB conversion unit that calculates RGB signals from the average color difference signals calculated by the color averaging unit and the brightness signals calculated by the color space conversion unit.3. The image processing device according claim 1 , ...

METHOD, APPARATUS, COMPUTER-READABLE STORAGE MEDIUM, AND TERMINAL FOR CALIBRATING AUTOMATIC WHITE BALANCE

A method, apparatus, computer-readable storage medium, and terminal for calibrating automatic white balance is provided including: obtaining a first white point acquired by a device under calibration capturing a neutral color under a calibration light source, and obtaining a second white point acquired by a predetermined golden set capturing a neutral color under the calibration light source; if either or both a first difference value between a first red deviation value and a second red deviation value is greater than a first predetermined threshold value and a second difference value between a first blue deviation value and a second blue deviation value is greater than a second predetermined threshold value, performing one or more of adjusting the second red deviation value so that the first difference value becomes smaller and adjusting the second blue deviation value so that the second difference value becomes smaller; and calibrating the device under calibration by using one or more of the adjusted second red deviation value and the adjusted second blue deviation value as a first golden value and a second golden value, respectively. 1. A method for calibrating automatic white balance , comprising:obtaining a first white point acquired by a device under calibration capturing a neutral color under a calibration light source, and obtaining a second white point acquired by a predetermined golden set capturing a neutral color under the calibration light source, the first white point including a first red deviation value and a first blue deviation value, and the second white point including a second red deviation value and a second blue deviation value, the first red deviation value being a ratio of a red value to a green value acquired by the device under calibration capturing a neutral color, the first blue deviation value being a ratio of a blue value to a green value acquired by the device under calibration capturing a neutral color, the second red deviation value ...

YCBCR PULSED ILLUMINATION SCHEME IN A LIGHT DEFICIENT ENVIRONMENT

The disclosure extends to methods, systems, and computer program products for producing an image in light deficient environments with luminance and chrominance emitted from a controlled light source. 131-. (canceled)32. A digital imaging method for use with an endoscope in ambient light deficient environments comprising:actuating an emitter to emit a pulse of a wavelength of electromagnetic radiation to cause illumination within the light deficient environment;wherein said pulse is within a wavelength range that comprises a portion of electromagnetic spectrum;pulsing said emitter at a predetermined interval;sensing reflected electromagnetic radiation from said pulse with a pixel array;wherein said pixel array is actuated at a sensing interval that corresponds to the pulse interval of said emitter; andsynchronizing the emitter and the imaging sensor so as to produce a plurality of image frames wherein the plurality of image frames comprises a luminance frame comprising luminance image data and a chrominance frame comprising chrominance data that are combined to form a color image.33. The method of claim 32 , wherein the emitter comprises a plurality of sources that each emits a pulse of a portion of electromagnetic spectrum.34. The method of claim 33 , further comprising actuating the plurality of sources simultaneously.35. The method of claim 34 , further comprising pulsing the plurality of sources at a predetermined interval.36. The method of claim 32 , further comprising adjusting the pulse to provide luminance information during the luminance frame claim 32 , by matching to color space conversion coefficients.37. The method of claim 32 , further comprising adjusting the pulse to provide chrominance information during the chrominance frame to match to color space conversion coefficients.38. The method of claim 37 , wherein the chrominance information is blue.39. The method of claim 37 , wherein the chrominance information is red.40. The method of claim 32 , ...

DRIVING METHOD OF IMAGING ELEMENT, IMAGING DEVICE, AND ENDOSCOPIC DEVICE

It is a method of driving a MOS type imaging element in which pixels having sensitivities for different colors are arranged two-dimensionally, in which the imaging element has at least two types of read-out lines having different pixel arrangements to read out a charge signal of the pixels, and the method includes driving such that a read-out time interval of a charge signal of at least one type of read-out line among the read-out lines is longer than a read-out time interval of another type of read-out line and a charge accumulating period of each pixel of the one type of read-out line is longer than a charge accumulating period of each pixel of said another type of read-out line. 1. A method of driving a MOS type imaging element in which pixels having sensitivities for different colors are arranged two-dimensionally ,wherein the imaging element has at least two types of read-out lines having different pixel arrangements to read out a charge signal of the pixels, andthe method comprises driving such that a read-out time interval of a charge signal of at least one type of read-out line among the read-out lines is longer than a read-out time interval of another type of read-out line and a charge accumulating period of each pixel of the one type of read-out line is longer than a charge accumulating period of each pixel of said another type of read-out line.2. The driving method of claim 1 , wherein the charge accumulating period is a period from a read-out timing of the charge signal to a next read-out timing.3. The driving method of claim 1 , wherein the charge accumulating period is a shutter open period of an electronic shutter.4. The driving method of claim 1 , wherein the charge accumulating period of the pixel of the one type of read-out line is twice as long as the charge accumulating period of the pixel of said another type of read-out line.5. The driving method of claim 1 , wherein the read-out lines are two types of read-out lines including a first read-out ...

IMAGE PROCESSING METHOD AND IMAGE PROCESSING DEVICE

An image processing module is provided. A de-mosaic unit in the image processing module includes an edge direction detection unit and a multi-pixel directional interpolation unit. The edge direction detection unit is used to determine a first color row luminance difference according to a plurality of first color pixels of a pixel row of raw data, and determine a first color column luminance difference according to a plurality of first color pixels of a pixel column of raw data. The multi-pixels directional interpolation unit is used to determine pixel luminance of a third color array according to the first color column luminance difference, the first color row luminance difference, the third color pixels adjacent to a first color pixel and the third color pixels adjacent to a second color pixel. 1. An image processing method adapted to correct the luminance of green pixels in a Bayer pattern , comprising:generating a low-pass weight according to a luminance difference average between a predetermined green pixel and a plurality of green pixels, a first predetermined luminance and a second predetermined luminance by a content adaptive unit;generating a de-noise value according to a luminance weighted average of a plurality of green pixels by a de-noise filter unit;generating a first color weighted value according to the low-pass weight and a luminance weighted average of the plurality of green pixels within the first color area, generating a second color weighted value according to the low-pass weight and a luminance weighted average of the plurality of green pixels within the second color area, and generating a color weighted difference according to the first color weighted value and the second color weighted value by a color weighted calculation unit;generating a mixed luminance value according to the low-pass weight, the de-noise value and the luminance of the predetermined green pixel by a mix unit; andgenerating a luminance corrected value according to the mixed ...

ENCODING, DECODING, AND REPRESENTING HIGH DYNAMIC RANGE IMAGES

Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations. 1. A method for envoding high-dynamic range images with a processor , the method comprising:receiving a high dynamic range (HDR) image;generating a tone-mapped image based on the HDR image;generating a luminance ratio image based on pixel luminance values of the HDR image and pixel luminance values of the tone-mapped image;determining residual chroma values based on the luminance ratio image, the HDR image and the tone-mapped image;generating a log ratio image based on the luminance ratio image; andgenerating a coded HDR image, the coded HDR image comprising the tone-mapped image and HDR reconstruction data, the HDR reconstruction data being derived based the log ratio image and the residual chroma values.2. The method of claim 1 , where generating the luminance ratio image comprises dividing claim 1 , on an individual pixel basis claim 1 , luminance pixel values of the HDR image with corresponding luminance pixel values of the tone-mapped image.3. The method of claim 1 , wherein determining the residual chroma values comprises:applying the luminance ratio image to the HDR image to create a re-mapped image; anddetermining ...

VIDEO SIGNAL PROCESSING METHOD AND APPARATUS

A video signal processing method which includes: performing luminance mapping and color gamut conversion after color space conversion and non-linear space-to-linear space conversion are performed on a to-be-processed video signal, performing linear space-to-non-linear space conversion and color space conversion on the color gamut-converted signal, and then performing saturation mapping on the converted signal, to obtain a video signal that matches a format supported by a display device, so that the to-be-processed video signal can be correctly displayed on the display device. 1. A video signal processing method , comprising:performing color space conversion on a to-be-processed video signal to obtain a first non-linear red green blue (RGB) signal;converting the first non-linear RGB signal based on an electro-optical transfer function, to obtain a first linear RGB signal;performing luminance mapping on the first linear RGB signal to obtain a second linear RGB signal, wherein a luminance value range corresponding to the second linear RGB signal is the same as a luminance value range corresponding to a display device;converting the second linear RGB signal based on an optical-electro transfer function, to obtain a second non-linear RGB signal;performing color space conversion on the second non-linear RGB signal to obtain a first luminance-chrominance signal; andperforming saturation mapping on a chrominance component of the first luminance-chrominance signal to obtain a second luminance-chrominance signal.2. The method according to claim 1 , wherein the to-be-processed video signal is a high dynamic range (HDR) signal claim 1 , and the second luminance-chrominance signal is a standard dynamic range (SDR) signal.3. The method according to claim 1 , wherein the performing luminance mapping on the first linear RGB signal comprises:calculating a temporary luminance value based on each primary color value of the first linear RGB signal;converting the temporary luminance ...

IMAGE PROCESSING APPARATUS, IMAGE PICKUP APPARATUS, IMAGE PICKUP SYSTEM, IMAGE PROCESSING METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM

An image processing apparatus () includes a detection unit () configured to detect a first region in which one of a signal level of a color plane corresponding to at least one color filter of an image acquired from an image pickup element including a plurality of color filters and a signal level of a brightness plane generated from the image monotonically increases or monotonically decreases in a first direction in a predetermined section, a determination unit () configured to determine a second region in which color bleeding occurs, based on optical information on the color bleeding of an image pickup optical system and information on the first region, and a correction unit () configured to correct the image so as to reduce the color bleeding. 1. An image processing apparatus comprising:a detection unit configured to detect a first region in which one of a signal level of a color plane corresponding to at least one color filter of an image acquired from an image pickup element including a plurality of color filters and a signal level of a brightness plane generated from the image monotonically increases or monotonically decreases in a first direction within a predetermined section;a determination unit configured to determine a second region in which color bleeding of an image pickup optical system occurs, based on optical information on the color bleeding and information on the first region; anda correction unit configured to correct the image so as to reduce the color bleeding.2. The image processing apparatus according to claim 1 , wherein the optical information is information on a second direction in which the color bleeding of the image pickup optical system occurs.3. The image processing apparatus according to claim 2 , wherein the determination unit is configured to compare the first direction with the second direction to determine the second region.4. The image processing apparatus according to claim 2 , wherein the determination unit is configured to ...

ENCODING AND DECODING HDR VIDEOS

To have a much better usable pragmatic manner of HDR video encoding and decoding, the inventor invented a high dynamic range video decoder () arranged to receive an encoding (Im_COD) of a high dynamic range video and to decode and output a set of temporally successive images (Im_RHDR) comprising: An input () to receive three weight values (kRY, kGY, kBY); A video decoder () arranged to decode the encoding (Im_COD) into an intermediate image (Im_RLDR) being in a Y′CbCr color representation; A brightness index calculation unit () arranged to calculate for each pixel of the intermediate image (Im_RLDR) a brightness index (J′) being defined as J′=Y′+MAX{kRY*(R′−Y′), kGY*(G′−Y′), kBY*(B′−Y′)}; A brightness mapper () arranged to receive a specification of at least one one-dimensional function F_ct, and to apply it with the brightness index (J′) as input, to obtain an output brightness index (J*); A multiplication factor calculation unit () arranged to calculate a multiplicative factor (g) being equal to the output brightness index (J*) divided by the brightness index (J′); Three multipliers () to multiply the respective color components (Y, Cr, Cb) of each pixel of the intermediate image (Im_RLDR) with the multiplicative factor (g), to obtain an output color (Y′H, Cb′H, Cr′H) for that pixel in the output dynamic range image (Im_RHDR) of the set of temporally successive images being currently decoded. 1. A high dynamic range video decoder arranged to receive an encoding (Im_COD) of a high dynamic range video and to decode and output a set of temporally successive images (Im_RHDR) comprising:an input to receive three weight values (kRY, kGY, kBY);a video decoder arranged to decode the encoding (Im_COD) into an intermediate image (Im_RLDR) being in a Y′CbCr color representation;a brightness index calculation unit arranged to calculate for each pixel of the intermediate image (Im_RLDR) a brightness index (J′) being defined as J′=Y′+MAX{kRY*(R′−Y′), kGY*(G′−Y′), kBY*(B′−Y′)} ...

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM

An image processing apparatus includes a generation unit configured to generate, from an input image, a plurality of hierarchical images having different frequency bands; a gain calculation unit configured to calculate, for each of the hierarchical images, a gain based on a luminance value for each image area by using a tone conversion curve that is set according to the corresponding frequency band, wherein the tone conversion curve assigns tone with priority to different luminance ranges according to the frequency bands of the hierarchical images; a determination unit configured to determine a combined gain by combining gains that are set for the plurality of hierarchical images; and a conversion unit configured to perform tone conversion on the input image by using the combined gain determined by the determination unit. 1. An image processing apparatus comprising:a generation unit configured to generate, from an input image, a plurality of hierarchical images having different frequency bands;a gain calculation unit configured to calculate, for each of the hierarchical images, a gain based on a luminance value for each image area by using a tone conversion curve that is set according to the corresponding frequency band, wherein the tone conversion curve assigns tone with priority to different luminance ranges according to the frequency bands of the hierarchical images;a determination unit configured to determine a combined gain by combining gains that are set for the plurality of hierarchical images; anda conversion unit configured to perform tone conversion on the input image by using the combined gain determined by the determination unit.2. The image processing apparatus according to claim 1 ,wherein the gain calculation unit calculates the gain by using a tone conversion curve that assigns tone to a hierarchical image having a relatively low frequency band, giving higher priority to a high luminance range.3. The image processing apparatus according to claim 1 , ...

Global Tone Mapping

A system accesses an image with each pixel of the image having luminance values each representative of a color component of the pixel. The system generates a first histogram for aggregate luminance values of the image, and accesses a target histogram for the image representative of a desired global image contrast. The system computes a transfer function based on the first histogram and the target histogram such that when the transfer function is applied, a histogram of the modified aggregate luminance values is within a threshold similarity of the target histogram. The system modifies the image by applying the transfer function to the luminance values of the image to produce a tone mapped image, and outputs the modified image. 1. A system comprising:an image sensor;a memory; and access an image captured by the image sensor;', 'determine a first histogram for luminance values of the image;', 'access a target histogram for the image;', 'compute a transfer function based on the first histogram and the target histogram such that when the transfer function is applied to pixel values of the image to create a set of modified luminance values, a histogram of the modified luminance values is within a threshold similarity of the target histogram;', 'apply the transfer function to pixel values of the image to produce a tone mapped image; and', 'output the tone mapped image., 'a processor, wherein the memory stores instructions executable by the processor to cause the system to2. The system of claim 1 , wherein the memory stores instructions executable by the processor to cause the system to:compute, for each pixel of the image, a luminance value based on a luminance function applied to a set of values corresponding to respective color components of the pixel.3. The system of claim 1 , wherein the memory stores instructions executable by the processor to cause the system to:generate a histogram for a color channel of the image; andapply a blackpoint to the image for the color ...

TARGETED DISPLAY COLOR VOLUME SPECIFICATION VIA COLOR REMAPPING INFORMATION (CRI) MESSAGING

Given existing color remapping information (CRI) messaging variables, methods are described to communicate color volume information for a targeted display to a downstream receiver. Bits of the 32-bit colour_remap_id are used to extract a first value. If the first value is not a reserved value, then the first value is used as an index to a look-up table to generate a first luminance value for a targeted display, otherwise a second value is generated based on bits in the colour_remap_id messaging variable and the first luminance value for a targeted display is generated based on the second value. The methods may be applied to communicate via CRI messaging a minimum luminance value, a maximum luminance value, and color primaries information of the targeted display. 1. A method on a decoder to extract color volume information for a targeted display , the method executed on a processor , the method comprising:by apparatus comprising one or more data processors configured by software, one or more programmable logic devices, one or more logic circuits or a combination thereof:receiving a colour_remap_id messaging variable identifying color remapping information, wherein the colour_remap_id messaging variable comprises 32 bits;{'b': 7', '0, 'generating a first value based on bits : of the colour_remap_id messaging variable;'} if the first value is not the reserved value, then using the first value as an index to a look-up table to generate a first luminance value for a targeted display, otherwise', {'b': 31', '9, 'generating a second value based on bits : in the colour_remap_id messaging variable; and'}, 'generating the first luminance value for the targeted display based on the second value., 'checking whether the first value is a reserved value;'}2. The method of claim 1 , wherein the first luminance value comprises the minimum or the maximum luminance value of the targeted display.330189. The method of claim 1 , wherein the first value is generated based on bits : of the ...