Method and system for improving compressed image chroma information

Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the color video image. Another aspect includes utilizing a lower or higher value of a quantization parameter (QP) for one or more chroma channels as compared to the luminance channel. Another aspect is use of a logarithmic representation of a video image to benefit image coding. Another aspect uses more than two chroma channels to represent a video image.

Image encoding/decoding method and apparatus

Provided are an image encoding/decoding method and apparatus, in which one of a plurality of color component images is predicted from a different color component image reconstructed using a correlation between the plurality of color component images. Using a reconstructed image of a first color component image selected from among the plurality of color component images forming a single color image, the other color component images are predicted.

Chroma Information Signaling for Video Streams

Embodiments of systems and methods for signaling chroma information for a picture in a compressed video stream are provided. One system embodiment, among others, comprises a memory with logic, and a processor configured with the logic to provide a compressed video stream that includes a picture having chroma samples and luma samples, and provide in the compressed video stream a flag for signaling information corresponding to the location of the chroma samples in relation to the luma samples in the picture, wherein a first defined flag value indicates default locations of the chroma samples in relation to the luma samples in the picture, wherein a second defined flag value indicates a presence in the compressed video stream of auxiliary chroma information corresponding to relative locations of the chroma samples to the luma samples in the picture, and wherein the number of chroma samples in the picture implied by the first defined flag value is equal to the number of chroma samples in the picture implied by the second defined flag value. Other embodiments for signaling chroma information for a picture in a compressed video stream are included herein.

Display Signal Conversion Apparatus

A display device includes a display panel including red, blue, green and white (RBGW) sub pixels, a signal conversion apparatus for converting an input signal having a first color format and color arrangement into a display signal having a second color format and color arrangement, a color conversion unit configured to convert the first color format into the second color format; a sub pixel position determining signal which determines a color arrangement of a sub pixel position of the display panel, and a sub pixel signal generation unit configured to generate a sub pixel signal having the second color format and color arrangement based on the sub pixel position determining signal.

IMAGING APPARATUS, IMAGING PROCESSING METHOD, IMAGE PROCESSING DEVICE AND IMAGING PROCESSING SYSTEM

An imaging apparatus includes: an image sensor; a signal processing unit repeatedly performing processing different from each other in a given number of sequential frames to imaging signals obtained by the image sensor to thereby obtain image data of respective frame; and an image data output unit sequentially outputting the image data of respective frames. 1. An imaging apparatus comprising:an image sensor;a signal processing unit repeatedly performing processing different from each other in a given number of sequential frames to imaging signals obtained by the image sensor to thereby obtain image data of respective frame; andan image data output unit sequentially outputting the image data of respective frames.2. The imaging apparatus according to claim 1 , further comprising:a header addition unit adding a header at least including identification information for identifying to which frame the image data corresponds in the given number of frames to image data of each frame obtained by the signal processing unit.3. The imaging apparatus according to claim 2 ,wherein the header addition unit adds the header to an area outside an effective image area or an area inside the effective image area in each frame.4. The imaging apparatus according to claim 3 ,wherein the header addition unit adds the header by using part of bits in a given number of pixel data when adding the header in the area inside the effective image area in each frame.5. The imaging apparatus according to claim 1 ,wherein the signal processing unit obtains first frame image data by performing first processing in a first frame and obtains second frame image data by performing second processing in a second frame in sequential two frames of the imaging signals obtained by the image sensor.6. The imaging apparatus according to claim 5 ,wherein the first frame image data is visual image data and the second frame image data is image data to which image conversion is performed.7. The imaging apparatus ...

Image information encoding method and encoder, and image information decoding method and decoder

An image decoding method includes decoding encoded image data to generate a decoded image signal including a luma signal and a chroma signal. The method further includes scaling, when a reference field has a different parity from a current field for motion compensation and when the decoded image signal is in a format in which the number of chroma pixels is vertically different from the number of luma pixels, a chroma motion vector of the chroma signal according to an accuracy for a luma motion vector of the luma signal so that a reference frame will coincide in phase of the chroma signal with a current frame. The method also includes performing motion compensation of the decoded image signal using the scaled chroma motion vector according to the accuracy of the luma motion vector of the luma signal.

Image information encoding method and encoder, and image information decoding method and decoder

An image decoding method includes decoding encoded image data to generate a decoded image signal including a luma signal and a chroma signal. The method further includes scaling, when a reference field has a different parity from a current field for motion compensation and when the decoded image signal is in a format in which the number of chroma pixels is vertically different from the number of luma pixels, a chroma motion vector of the chroma signal according to an accuracy for a luma motion vector of the luma signal so that a reference frame will coincide in phase of the chroma signal with a current frame. The method also includes performing motion compensation of the decoded image signal using the scaled chroma motion vector according to the accuracy of the luma motion vector of the luma signal.

VIDEO COMPRESSION WITH COLOR SPACE SCALABILITY

An image decoder includes a base layer to decode at least a portion of an encoded video stream into a first image having a first image format. The image decoder can generate a color space prediction by scaling a color space of the first image from the first image format into a color space corresponding to a second image format. The image decoder includes an enhancement layer to decode the encoded video stream to generate a second image in the second image format based, at least in part, on the color space prediction. 1. An image decoder comprising:said image decoder including a base layer to decode at least a portion of an encoded video stream into a first image having a first image format, wherein the image decoder is configured to generate a color space prediction by scaling a color space of the first image from the first image format into a color space corresponding to a second image format, and include an enhancement layer to decode the encoded video stream to generate a second image in the second image format based, at least in part, on the color space prediction.2. The image decoder of claim 1 , wherein the first image format corresponds to a BT.709 video standard and the second image format corresponds to an Ultra High Definition Television (UHDTV) video standard.3. The image decoder of claim 1 , wherein the image decoder is configured to generate the color space prediction by independently scaling each channel of the color spaces.4. The image decoder of claim 1 , wherein the image decoder is configured to generate the color space prediction by mixing a luminance channel with a chrominance channel of the first image to generate at least a luminance channel or chrominance channel of the color space prediction.5. The image decoder of claim 1 , wherein the image decoder is configured to scale the color space of the first image corresponding to the first image format into the color space corresponding to the second image format based claim 1 , at least in part ...

Video transmission device, video display device, and video transmission method

A device includes a transmitter that transmits, via an interface comprising first, second, and third transmission channels, video data having a 4:1:1 format to a display device. 4:1:1 represents a ratio of a sampling frequencies of a brightness component, to a first color difference component, to a second color difference component. The first and second color difference components of one pixel in a first horizontal line of a first frame of the video data are allocated and transmitted within two clock cycles of the first transmission channel. Brightness components of four pixels in the first horizontal line are allocated and transmitted within two clock cycles of the second and third transmission channels. The transmitter transmits the video data for all of the pixels of the first horizontal line, and thereafter, sets pixels in a second horizontal line as a target to be transmitted.

Methods of Palette Based Prediction for Non-444 Color Format in Video and Image Coding

A method of video coding using palette coding mode for color video in a non-444 color format is disclosed. The non-444 video data can be converted to the 444 format so that the palette designed for the 444 format can be used for the non-444 video data. For the 4:2:0 color format, each chroma sample collocated with corresponding quad luma samples is padded with three chroma samples to form converted quad chroma samples. For the 4:2:0 color format, if a current pixel does not belong to the color palette, one or more escape values are signaled for the current pixel and the escape value associated with the chroma sample of the current pixel for each color component is not signaled for three of the quad chroma sample locations collocated with corresponding quad luma samples. 1. A method of video decoding using a palette coding mode for color video in a non-444 color format , wherein the color video comprises one first-color component and one or more second-color components , and the method comprises:receiving video bitstream comprising color video in the non-444 color format, the video bitstream including coded data associated with a current block in a current picture, wherein the current block comprises one first-color block corresponding to said one first-color component and one or more second-color blocks corresponding to said one or more second-color components;deriving a color palette from the video bitstream, wherein each entry of the color palette comprises one first-color palette sample of the first-color component and one second-color palette sample of each second-color component; andrecovering the current block by converting an index map of the current block into first-color samples of the first-color block and second-color samples of said one or more second-color blocks according to the color palette, wherein the second-color samples of each second-color block in the recovered current block have reduced spatial resolution compared to the first-color samples of ...

METHOD FOR SCALING CHANNEL OF AN IMAGE

The present invention relates to a method for scaling a first channel, wherein the method comprises computing a low resolution second channel based on a transformation of the second channel with a transformation function used to transform high resolution channel into a low resolution channel; computing a correlation function between the low resolution second channel and the first channel; determining a predicted second channel having the high resolution from the low resolution second channel according to a prediction method; computing an high-pass second channel based on the difference between the second channel and the predicted second channel and based on the correlation function; determining a predicted first channel having the high resolution from the first channel according to the prediction method. 17-. (canceled)8. A method for enhancing an image , comprising:determining a first channel of low resolution and a second channel of high resolution based on a frame of the image;computing a low-resolution second channel based on a transformation of the second channel;determining a correlation between the low-resolution second channel and the first channel;computing a high-pass second channel based at least in part on the second channel and the correlation; andenhancing the image via scaling the first channel based at least in part on the high-pass second channel.9. The method of claim 8 , further comprising determining a predicted second channel of high resolution based on the low-resolution second channel.10. The method of claim 9 , wherein the computation of the high-pass second channel is based at least in part on a (i) difference between the second channel and the predicted second channel and (ii) the correlation.11. The method of claim 10 , further comprising determining a predicted first channel of high resolution based at least in part on the first channel.12. The method of claim 11 , wherein the scaling of the first channel is based at least in part on the ...

RESILIENT IMAGE COMPRESSION AND DECOMPRESSION

An image processing method includes selecting an image in fixed storage of a computer and loading the selected image into memory of the computer. The method further includes representing the loaded image by a processor of the computer in the memory as an initial two-dimensional array of pixel values. Thereafter, the initial two-dimensional array of pixel values may be transformed into a hierarchy of progressively axially decremented two-dimensional arrays of signs and a pair of one-dimensional values for each 2×2 array of signs amongst the decremented two-dimensional arrays of signs. Finally, each of the two-dimensional arrays of signs and each pair of one-dimensional values may be stored in the fixed storage as a compressed form of the selected image. 1. An image processing method comprising:selecting an image in fixed storage of a computer;loading the selected image into memory of the computer;representing the loaded image by a processor of the computer in the memory as an initial two-dimensional array of pixel values;transforming the initial two-dimensional array of pixel values into a hierarchy of progressively axially decremented two-dimensional arrays of signs and a pair of one-dimensional values for each 2×2 array of signs amongst the decremented two-dimensional arrays of signs; and,storing in the fixed storage each of the two-dimensional arrays of signs and each pair of one-dimensional values as a compressed form of the selected image.2. The method of claim 1 , wherein the pixel values include at least one color intensity value.3. The method of claim 2 , wherein each color intensity value is a combination of three eight-bit intensity values of a color space.4. The method of claim 1 , wherein the transformation of the initial two-dimensional array of pixel values into the hierarchy comprises submitting the initial two-dimensional array to a recursive encoding operation that receives as input claim 1 , a grid of specified dimension and that produces as output ...

SYSTEM AND METHOD OF REDUCING DISTORTION DURING DOWNSAMPLING

A video processing system is provided for reducing distortion in video signals. The system includes a first transfer function that applies a transfer function to a received video signal to generate a gamma corrected video signal in a first color space; and a first matrix component that transforms the gamma corrected video signal in the first color space to a gamma corrected signal in a second color space, and extracts a luminance component from the gamma corrected signal in the second color space. Moreover, the system includes a second transfer function that generates a gamma corrected downsampled video signal in the first color space, and a second matrix component that transforms the gamma corrected video signal in the first color space to a gamma corrected video signal in the second color space, and extracts the chroma component in the second color space. 1. A video processing system for reducing distortion in video signals , the video processing system comprising:a video signal splitter configured to split a received video signal in a first color space as a first split signal and a second split signal;a first transfer function component configured to apply a transfer function to the first split signal to generate a gamma corrected video signal in the first color space;a first matrix component configured to transform the gamma corrected video signal in the first color space to a gamma corrected signal in a second color space, and configured to extract a luminance component from the gamma corrected signal in the second color space;a low-pass filter component configured to down sample the second split signal to generate a downsampled signal in the first color space;a second transfer function component configured to apply a transfer function to the down-sampled signal to generate a gamma corrected downsampled video signal in the first color space;a second matrix component configured to transform the gamma corrected downsampled video signal in the first color space to ...

METHOD, MEDIUM, AND APPARATUS ENCODING AND/OR DECODING AN IMAGE USING THE SAME CODING MODE ACROSS COMPONENTS

A method, medium, and apparatus encoding and/or decoding an image in order to increase encoding and decoding efficiency by performing binary-arithmetic coding/decoding on a binary value of a syntax element using a probability model having the same syntax element probability value for respective context index information of each of at least two image components. 1a processor to obtain a predicted direction of luma component of the current image and a predicted direction of chroma components corresponding to the predicted direction of luma component in one of predetermined decoding modes; anda decoder to decode the predicted image of the current image based on the predicted direction of the luma and chroma components,wherein the predicted direction of chroma components is identical to the predicted direction of the luma component.. An apparatus for decoding a predicted image of a current image, the apparatus comprising: This application is a continuation of U.S. application Ser. No. 11/598,681, filed on Nov. 14, 2006, which claims the benefit of U.S. Provisional Patent Application No. 60/735,814, filed on Nov. 14, 2005, the benefit of Korean Patent Application No. 10-2006-0049079, filed on May 30, 2006 and the benefit of Korean Patent Application No. 10-2006-0110225, filed on May 30, 2006, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein in their entirety by reference.1. Field of the InventionAn embodiment of the present invention relates to a method, medium, and apparatus encoding and/or decoding an image.2. Description of the Related ArtGenerally, when an image is captured, the image is captured in a RGB format. However, when the captured image is compressed, the image is typically transformed to an image of a YUV or YCbCr format. In this case, Y is a luminance component, such as a black and white image, and U (or Cb) and V (or Cr) are chrominance components of the corresponding image. Information is typically evenly ...

Video Channel Display Method and Apparatus

Methods for video display using a computing system. The computing system includes a main computing module and an ancillary computing module. The main computing module may transmit a synchronization control information block to the ancillary computing module. The synchronization control information block includes a frame number of a current frame and the reference time associated with the main computing module. The ancillary computing module receives the synchronization control information block and selects a frame pack having the same frame number contained in the synchronization control information block as the current frame. The ancillary computing module may obtain the reference time of the current frame based on a local time of the ancillary computing module. The main computing module and the ancillary computing module may decode one or more parts of the frame, respectively. Further, the decoded parts of the frame may be combined and displayed. 120.-. (canceled)21. A method comprising:retrieving a current frame of a video file;obtaining a reference time of the current frame based at least in part on a frame number of the current frame and a local time of a first computing device;decoding a first part of the current frame;transmitting a synchronization control information block containing the frame number and the reference time of the current frame to a second computing device to decode a second part of the current frame;receiving the decoded second part of the current frame from the second computing device;combining the decoded first part and the decoded second part of the current frame to form a decoded content of the current frame; anddisplaying the decoded content of the current frame.22. The method of claim 21 , wherein the reference time of the current frame comprises one or more of a display time or a decoding time associated with the first computing device.23. The method of claim 21 , wherein the first part of the current frame comprises one of an upper ...

DYNAMIC SELECTION OF DISPLAY RESOLUTION

An apparatus is provided which comprises: a first circuitry to provide an estimate of a distance of a user from the apparatus; and a second circuitry to select a display resolution for displaying on a display panel of the apparatus, based at least in part on the estimate of the distance of the user from the apparatus. 1. An apparatus comprising:a first circuitry to provide an estimate of a distance of a user from the apparatus; and select a display resolution, based at least in part on the estimate of the distance of the user from the apparatus, and', 'cause display of content at the selected display resolution on a display panel of the apparatus, 'a second circuitry to2. The apparatus of claim 1 , wherein a content provider is to provide the content at a plurality of display resolutions claim 1 , and wherein the apparatus further comprises:a third circuitry to request and receive the content from the content provider over a network at the selected display resolution.3. The apparatus of claim 1 , wherein the display resolution is a first display resolution claim 1 , and wherein the apparatus further comprises:a third circuitry to receive the content from a content provider over a network at a second display resolution that is different from the first display resolution;a fourth circuitry to scale the content from the second display resolution to the first display resolution; anda fifth circuitry to render the content for display on the display panel at the first display resolution.4. The apparatus of claim 1 , wherein the display resolution is a first display resolution claim 1 , and wherein the apparatus further comprises:a third circuitry to access the content that is stored in the apparatus at a second display resolution, the second display resolution being different from the first second display resolution;a fourth circuitry to scale the content from the second display resolution to the first display resolution; anda fifth circuitry to render the content for ...

DISPLAY METHOD AND DISPLAY DEVICE

Provided is a display method of displaying, on a display device, video of video data where luminance of video is defined by a first EOTF corresponding to HDR. The method includes: acquiring the video data; performing first conversion where the luminance of the video is converted to a luminance corresponding to a dynamic range of a third EOTF, where, with regard to a second EOTF that is part of the first EOTF and is the part of a luminance range where the peak luminance indicated by the peak luminance information included in the acquired video data is maximum luminance, the dynamic range of luminance of the second EOTF is reduced with maximum luminance of the second EOTF matching displayable luminance of the display device, while maintaining the relative relationship of luminance of the second EOTF; and displaying the video on the display device using the result of the first conversion. 1. A display method of displaying , on a display device , video of video data including peak luminance information indicating peak luminance of the video , where luminance of video is defined by a first Electro-Optical Transfer Function (EOTF) indicating a correlation of High Dynamic Range (HDR) luminance and code values , the method comprising:acquiring the video data;performing first conversion where the luminance of the video is converted to a luminance corresponding to a dynamic range of a third EOTF, where, with regard to a second EOTF that is part of the first EOTF and is the part of a luminance range where the peak luminance indicated by the peak luminance information included in the acquired video data is the maximum luminance, the dynamic range of luminance of the second EOTF is reduced with the maximum luminance of the second EOTF matching the displayable luminance of the display device, while maintaining the relative relationship of luminance of the second EOTF; anddisplaying the video on the display device using the result of the first conversion.2. The display method ...

TECHNIQUE FOR PROVIDING PROGRAMMING CONTENT THROUGH A COMMUNICATIONS NETWORK HAVING LIMITED BANDWIDTH

In a cable television system, a specific carrier is assigned to deliver programming content of a program channel to a service area for a period, defined as a function of viewership of the program channel during that period. For example, the program channel is assigned the specific carrier during the time when it has a generally strong viewership. Otherwise, the program channel is assigned a carrier on an as needed basis, i.e., only when one or more subscribers in the service area request such a program channel. Viewing statistics are generated to identify viewership patterns or viewing habits of the subscribers in the service area with respect to a given program channel. In another embodiment, based on the viewing statistics, popular and unpopular programs, program elements, program lineups, program channels are identified on a temporal and/or regional basis. 167.-. (canceled)68. A method of operating a digital content network to allocate radio frequency (RF) spectrum using at least a modulator apparatus , the method comprising:receiving data identifying each of (i) a prioritized portion of the RF spectrum and (ii) a non-prioritized portion of the RF spectrum;receiving data indicative of one or more user requests for content from one or more computerized user devices via the digital content network;isolating the prioritized portion of the RF spectrum from a carrier selection algorithm operative to control the modulator apparatus, the carrier selection algorithm configured to allocate RF carriers based at least in part on the receipt of the data indicative of the one or more user requests for content; andutilizing the non-prioritized portion of the RF spectrum to dynamically service a first request of the one or more user requests for content, the first request corresponding to first digitally rendered content.69. The method of claim 68 , wherein the prioritized portion of the RF spectrum is not subject to switched transmission.70. The method of claim 68 , further ...

Communication control method and communication system

In a display system, a wireless transmitter receives video data and a CEC command from an AV amplifier, determines whether the received CEC command is a preset command or not, generates a confirmation command if it is determined that the CEC command is a preset command, and transmits the video data and the CEC command received from the AV amplifier and the confirmation command, to a projector. The projector receives the video data, the CEC command and the confirmation command transmitted from the wireless transmitter, and determines whether the received CEC command and confirmation command correspond to each other or not.

METHOD AND DEVICE FOR TRANSMITTING HIGH-DEFINITION VIDEO SIGNAL

Provided in embodiments of the present invention are a method and device for transmitting a high-definition video signal, comprising: isolating from the high-definition video signal a brightness signal and a chrominance signal, and, by using an analog signal transmission mode, using non-overlapping frequency hands to transmit respectively the brightness signal and the chrominance signal. The solution of the present invention employs the analog signal transmission method, utilizes independent frequency bands to transmit respectively the brightness signal and the chrominance signal, and ensures that the brightness signal and the chrominance signal do not affect each other, thus ensuring video quality and timeliness of the high-definition video signal when transmitted over a long distance. 1. A method of transmitting a high-definition video signal , the method comprises:separating a brightness signal and a chrominance signal from the high-definition video signal; andtransmitting the brightness signal and the chrominance signal using a transmission mode of an analog signal;wherein the brightness signal and the chrominance signal are transmitted in non-overlapping bands.2. The method according to claim 1 , wherein transmitting the brightness signal and the chrominance signal using the transmission mode of the analog signal comprises:converting the brightness signal into a quantized brightness value;modulating and then loading the chrominance signal onto an intermediate-frequency carrier to generate a quantized value of the chrominance signal modulated over the carrier, andsuperimposing the quantized brightness value and the quantized value of the chrominance signal modulated over the carrier, and converting, the superimposed signal into an analog signal for transmission.3. The method according to claim 2 , wherein converting the superimposed signal into the analog signal for transmission comprises: outputting the analog signal obtained by conversion onto a coaxial cable ...

Method and apparatus for encoding/decoding video using high-precision filter

A video decoding apparatus for inter-predicting a current block to be decoded, includes: a decoder to extract motion information on the current block from a bitstream; and a predictor to determine a motion vector of the current block based on the extracted motion information, and generate a prediction block based on interpolating chroma sub-samples of a reference block in a reference frame referenced by the motion vector of the current block.

VIDEO SIGNAL PROCESSING APPARATUS, VIDEO DISPLAY APPARATUS, AND ELECTRONIC DEVICE

The time necessary for specifying an improper video signal is significantly reduced. An input signal determination circuit and a signal distribution circuit are included, the input signal determination circuit determining, for video signals to be input to a synchronization circuit, whether or not each of the video signals satisfies a display reference for performing video display in a division display area corresponding to the video signal, the signal distribution circuit distributing, for another proper video signal for a video signal determined by the input signal determination circuit to be a video signal that does not satisfy the display reference for performing video display. 1. A video signal processing apparatus that outputs video signals to respective division display areas in parallel , which are obtained by dividing a display area of a display apparatus , the video signal processing apparatus comprising:a synchronization unit that achieves synchronization for video signals to be input to the respective division display areas;a display reference determination unit that determines, for video signals to be input to the synchronization unit, whether or not each of the video signals satisfies a display reference for performing video display in a division display area corresponding to the video signal; anda signal replacement unit that replaces a video signal determined by the display reference determination unit to be a video signal that does not satisfy the display reference for performing video display with a video signal for displaying a video used to specify a division display area to which the video signal determined to be a video signal that does not satisfy the display reference is to be input.2. The video signal processing apparatus according to claim 1 , wherein the signal replacement unitreplaces a video signal determined by the display reference determination unit to be a video signal that does not satisfy the display reference for performing video ...

IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD THEREOF

An image processing method, including: receiving image content and metadata of the image content, the metadata content comprising flag information indicating whether to perform image processing on the image content and image processing information; determining whether to perform the image processing for each frame based on the flag information; performing, in response to determining to perform the image processing for an image frame, the image processing based on the image processing information on the image frame; and outputting the image processed image frame on which the image processing is performed. 1. An image processing method , comprising:receiving image content and metadata of the image content, the metadata content comprising flag information indicating whether to perform image processing on the image content and image processing information;determining whether to perform the image processing for each frame based on the flag information;performing, in response to determining to perform the image processing for an image frame, the image processing based on the image processing information on the image frame; andoutputting the image processed image frame on which the image processing is performed.2. The image processing method as claimed in claim 1 , wherein the image processing information comprises at least one of information for enhancing sharpness of the image content claim 1 , information for processing noise of the image content claim 1 , information for enhancing a brightness of the image content claim 1 , and information for enhancing a color of the image content.3. The image processing method as claimed in claim 2 , whereinthe metadata comprises information on frequency characteristics of the image content for enhancing the sharpness of the image content, andthe performing the image processing comprises controlling a frequency component and an intensity of an image processing filter based on the frequency characteristics of the image content ...

INFORMATION PROCESSING APPARATUS, INFORMATION RECORDING MEDIUM, INFORMATION PROCESSING METHOD, AND PROGRAM

Image reproduction according to a display apparatus is realized by acquiring image information of an ultra-high definition (UHD) image from a playlist file or a clip information file. A data processing unit that performs a reproduction process of a disc recording data acquires a playlist file or a clip information file as a reproduction control information file corresponding to reproduction data recorded in a disc, determines whether or not an ultra-high definition (UHD) image is recorded in the disc based on recording data of such a file, and, in a case where the ultra-high definition (UHD) image is recorded in the disc, acquires image information of the ultra-high definition (UHD) image from the reproduction control information and controls output data for a display apparatus based on the acquired image information. 1. An information processing apparatus comprising:a data processing unit that performs a reproduction process of a recording data, wherein acquires a reproduction control information file corresponding to reproduction data recorded in a recording medium,', 'determines whether or not an ultra-high definition (UHD) image is recorded in the recording medium based on recording data of the acquired reproduction control information file, and', 'acquires image information of the ultra-high definition (UHD) image from the reproduction control information and controls output data for a display apparatus based on the acquired image information in a case where the ultra-high definition (UHD) image is recorded in the recording medium., 'the data processing unit'}2. The information processing apparatus according to claim 1 , wherein determines whether or not high dynamic range (HDR) image data is recorded in the recording medium based on the recording data of the reproduction control information file, and', 'acquires image information of the HDR image from the reproduction control information and controls the output data for the display apparatus based on the ...

Information processing apparatus, information recording medium, image processing method, and program

An information processing apparatus may include circuitry configured to: receive a first image ( 201 ), a second image ( 202 ) and first color space information (BT.2020) indicating a first color space of the first image; convert a second color space (BT.709) of the second image to a converted color space (BT.2020) same as the first color space, when the second color space is different from the first color space; and generate a display image ( 209 ) including the first image and the second image having the converted color space.

DEVICE AND METHOD FOR PROCESSING VIDEO CONTENT FOR DISPLAY CONTROL

Various aspects of a video processing device and method for display control includes detection, from a sequence of image frames received from a video source, a transition from one or more frames associated with a first metadata to one or more other frames associated with a second metadata. First visual properties of the one or more frames are determined based on the first metadata. Second visual properties of the one or more other frames are determined based on the second metadata. The determined second visual properties of the one or more other frames are controlled in accordance with the determined first visual properties of the one or more frames to enable a smooth transition. 1. A video processing device , comprising: detect from a sequence of image frames received from a video source, a transition from one or more frames associated with a first metadata to one or more other frames associated with a second metadata;', 'determine first visual properties of said one or more frames based on said first metadata;', 'determine second visual properties of said one or more other frames based on said second metadata; and', 'control said determined second visual properties of said one or more other frames in accordance with said determined first visual properties of said one or more frames to enable a smooth transition., 'one or more circuits configured to2. The video processing device according to claim 1 , wherein said sequence of image frames comprises a first type of video segment that corresponds to said one or more frames and a second type of video segment that corresponds to said one or more other frames.3. The video processing device according to claim 2 , wherein said first type of video segment and said second type of video segment is a high dynamic range (HDR) video.4. The video processing device according to claim 2 , wherein said first type of video segment corresponds to at least one of a television program claim 2 , a video item from an Internet-based video ...

PLAYBACK METHOD ACCORDING TO FUNCTION OF PLAYBACK DEVICE

A method to be performed by a playback device includes determining whether the playback device has a function for converting first graphics in a second luminance range narrower than a first luminance range to second graphics in the first luminance range, when the playback device has the function, converting the first graphics to the second graphics, and displaying a video in the first luminance range with the second graphics being superimposed on the video, and when the playback device does not have the function, displaying the video with third graphics different from the second graphics being superimposed on the video. 1. A method to be performed by a playback device , comprising:determining whether the playback device has a function for converting first graphics in a second luminance range narrower than a first luminance range to second graphics in the first luminance range;when the playback device has the function, converting the first graphics to the second graphics, and displaying a video in the first luminance range with the second graphics being superimposed on the video; andwhen the playback device does not have the function, displaying the video with third graphics different from the second graphics being superimposed on the video.2. The method according to claim 1 , further comprising when the playback device does not have the function claim 1 , generating the third graphics using a color conversion table for the first luminance range.3. The method according to claim 1 , wherein the third graphics are the first graphics.4. The method according to claim 1 , wherein the determining includes executing a playback control program to determine whether the playback device has the function.5. The method according to claim 4 , wherein the playback control program determines whether the playback device has the function by checking a register that stores information representing whether the playback device has the function.6. A playback device comprising:one or ...

APPARATUS FOR SWITCHING/ROUTING IMAGE SIGNALS THROUGH BANDWIDTH SPLITTING AND REDUCTION AND THE METHOD THEREOF

The present invention relates to an apparatus and method for IP switching/routing SDI format image signal through bandwidth splitting and reduction, more specifically, which decomposes image signals consisting of YCbCr type color format entered with serial digital interface (SDI) into Y (luminance) component and C (chrominance) component, or multiple bit slice components; converts the components into IP packets and performs switching and/or routing of the IP packets; extracts Y component and C component or multiple bit slice components from the switched or routed IP packets; and combines the components into SDI format image signal and outputs the combined SDI format image signal. In addition, the present invention provides an apparatus switching/routing image signals through grid based networking, in which broadband switching or routing is performed with multiple narrow band switches or routers by switching or routing image signals through bandwidth splitting and reduction. 1. An apparatus for IP switching/routing through decomposed processing of SDI format video signals is configured to:decompose SDI format video signal into Y component and C component, multiple bit slice components or the combinations thereof, and convert the decomposed components to IP packets;switch or route the converted IP packets; andconvert the switched or routed IP packets to Y component and C component, multiple bit slice components, or the combinations thereof, and compose the converted components into SDI format video signal.2. The apparatus of claim 1 , further configured to provide synchronization of processing for video signals and IP packets; andwherein the synchronization is to extract a synchronization signal from the SDI format video signal, decompose or combine the SDI video signal according to the extracted synchronization signal, and combine and output the SDI format video signal while maintaining the integrity of inputted SDI format video signal.3. The apparatus of claim 1 , ...

APPARATUS AND METHODS FOR CARRIER ALLOCATION IN A COMMUNICATIONS NETWORK

In a cable television system, a specific carrier is assigned to deliver programming content of a program channel to a service area for a period, defined as a function of viewership of the program channel during that period. For example, the program channel is assigned the specific carrier during the time when it has a generally strong viewership. Otherwise, the program channel is assigned a carrier on an as needed basis, i.e., only when one or more subscribers in the service area request such a program channel. Viewing statistics are generated to identify viewership patterns or viewing habits of the subscribers in the service area with respect to a given program channel. In another embodiment, based on the viewing statistics, popular and unpopular programs, program elements, program lineups, program channels are identified on a temporal and/or regional basis. 166.-. (canceled)67. A computerized method for utilizing a digital content network to allocate radio frequency (RF) spectrum using at least a computerized modulator apparatus , the computerized method comprising:identifying each of (i) a first portion of the RF spectrum and (ii) a second portion of the RF spectrum;receiving data indicative of one or more requests for digitally rendered content, the data indicative of the one or more requests originating from one or more computerized client devices in data communication with the digital content network;isolating the first portion of the RF spectrum from a carrier selection algorithm operative to control the computerized modulator apparatus, the carrier selection algorithm configured to allocate RF carriers based at least in part on the data indicative of the one or more requests;identifying a plurality of first RF carriers within the first portion of the RF spectrum and a plurality of second RF carriers within the second portion of the RF spectrum;selecting one or more RF carriers from the plurality of second RF carriers;allocating the one or more RF carriers to ...

METHOD AND DEVICE FOR TRANSMITIING HIGH-DEFINITION VIDEO SIGNAL

Provided in embodiments of the present invention are a method and device for transmitting a high-definition video signal, comprising: isolating from the high-definition video signal a brightness signal and a chrominance signal, and, by using an analog signal transmission mode, using non-overlapping frequency hands to transmit respectively the brightness signal and the chrominance signal. The solution of the present invention employs the analog signal transmission method, utilizes independent frequency bands to transmit respectively the brightness signal and the chrominance signal, and ensures that the brightness signal and the chrominance signal do not affect each other, thus ensuring video quality and timeliness of the high-definition video signal when transmitted over a long distance. 116.-. (canceled)17. A method of transmitting a video signal , the method comprising:separating a first signal and a second signal from the video signal;selecting a first band for transmitting the first signal;selecting, based on the first band, a second band for transmitting the second signal;transmitting the first signal in the first band; andtransmitting the second signal in the second band,wherein the first band and the second band are separate bands.18. The method of claim 17 , wherein a clock synchronization signal is coupled at a blanking location of the video signal as a clock source of the second signal for recovering sample.19. The method of claim 17 , the selecting the first band comprising determining the bandwidth of the first band based on a horizontal resolution of the video signal or a frame rate.20. The method of claim 17 , the selecting the second band comprising determining the bandwidth of the second band based on a color resolution of the video signal.21. The method of claim 17 , wherein the video signal is in at least one format of the format 720P claim 17 , the format 1080P claim 17 , the format 1280H claim 17 , or the format 1920H.22. The method of claim 17 , ...

Image data transmission apparatus, image data transmission method, image data reception apparatus, image data reception method, and image data transmission and reception system

An apparatus may include a control unit to determine whether a display state notification indicating a dimensional display process exists. The control unit may set an output form of display data to be displayed on image data to an output form corresponding to a display state indicated by the display state notification.

METHOD, MEDIUM, AND APPARATUS ENCODING AND/OR DECODING AN IMAGE USING THE SAME CODING MODE ACROSS COMPONENTS

A method, medium, and apparatus encoding and/or decoding an image in order to increase encoding and decoding efficiency by performing binary-arithmetic coding/decoding on a binary value of a syntax element using a probability model having the same syntax element probability value for respective context index information of each of at least two image components. 1a processor to obtain a predicted direction of luma component of the current image and a predicted direction of chroma components corresponding to the predicted direction of luma component in one of predetermined decoding modes; anda decoder to decode the predicted image of the current image based on the predicted direction of the luma and chroma components,wherein the predicted direction of chroma components is identical to the predicted direction of the luma component.. An apparatus for decoding a predicted image of a current image, the apparatus comprising: This application is a continuation of U.S. application Ser. No. 11/598,681, filed on Nov. 14, 2006, which claims the benefit of U.S. Provisional Patent Application No. 60/735,814, filed on Nov. 14, 2005, the benefit of Korean Patent Application No. 10-2006-0049079, filed on May 30, 2006 and the benefit of Korean Patent Application No. 10-2006-0110225, filed on May 30, 2006, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein in their entirety by reference.1. Field of the InventionAn embodiment of the present invention relates to a method, medium, and apparatus encoding and/or decoding an image.2. Description of the Related ArtGenerally, when an image is captured, the image is captured in a RGB format. However, when the captured image is compressed, the image is typically transformed to an image of a YUV or YCbCr format. In this case, Y is a luminance component, such as a black and white image, and U (or Cb) and V (or Cr) are chrominance components of the corresponding image. Information is typically evenly ...

Method, medium, and apparatus encoding and/or decoding an image using the same coding mode across components

A method, medium, and apparatus encoding and/or decoding an image in order to increase encoding and decoding efficiency by performing binary-arithmetic coding/decoding on a binary value of a syntax element using a probability model having the same syntax element probability value for respective context index information of each of at least two image components.

Using metadata for dc offset correction for an ac-coupled video link

Disclosed herein are systems and methods for performing DC offset correction of a video signal received over an AC-coupled video link. In one aspect, a transmitter is configured to compute, and provide to a receiver, metadata indicative of a statistical characteristic (e.g., an average or a sum of values) for a group of active pixels of a video signal acquired by a camera. The receiver is configured to compute an analogous statistical characteristic on the video signal received over an AC-coupled video link, and to perform DC offset correction by modifying one or more values of the received video signal based on a comparison of the statistical characteristic computed by the receiver and the one computed by the transmitter and indicated by the received metadata.

PROVIDING 3D LOOK-UP TABLE (LUT) ESTIMATION FOR COLOR GAMUT SCALABILITY

Systems and/or methods for estimating color conversion components. A video coding device may receive a picture associated with a first color space. The picture may comprise a first component at a first sampling location, a second component at a second sampling location and the second component at a third sampling location. The video coding device may apply a first interpolation filter to the second component at the second sampling location and the second component at the third sampling location to determine the second component at the first sampling location. The second component at the first sampling location may be associated with the first color space. The video coding device may apply a color conversion model to the first component at the first sampling location and to the second component at the first sampling location to translate the first component at the first sampling location to a second color space. 123.-. (canceled)24. A video coding device , comprising: receive a picture associated with a first color space associated with a first color gamut, wherein the picture comprises a first component at a first sampling location, a second component at a second sampling location and the second component at a third sampling location,', 'apply a first interpolation filter to the second component at the second sampling location and the second component at the third sampling location to determine the second component at the first sampling location, wherein the second component at the first sampling location is associated with the first color space; and', 'apply color conversion to the first component at the first sampling location and to the second component at the first sampling location to translate the first component at the first sampling location to a second color space associated with a second color gamut., 'a processor configured to25. The video coding device of claim 24 , wherein the first component is a luma component and the second component is a first ...

Decoding and Display of High Dynamic Range Video

Novel methods and systems for decoding and displaying enhanced dynamic range (EDR) video signals are disclosed. To accommodate legacy digital media players with constrained computational resources, compositing and display management (DM) operations are moved from a digital media player to its attached EDR display. On a video receiver, base and enhancement video layers are decoded and multiplexed together with overlay graphics into an interleaved stream. The video and graphics signals are all converted to a common format which allows metadata to be embedded in the interleaved signal as part of the least significant bits in the chroma channels. On the display, the video and the graphics are de-interleaved. After compositing and display management operations guided by the received metadata, the received graphics data are blended with the output of the DM process and the final video output is displayed on the display's panel. 1. A system for decoding and displaying enhanced dynamic range (EDR) images , the system comprising: receiving a layered coded video stream comprising a first coded video stream, a second coded video stream, and metadata;', 'decoding the first coded video stream to generate a decoded first video signal in a first video format;', 'decoding the second video stream to generate a decoded second video signal in a second video format;', 'receiving graphics data in a third video format;', 'converting the decoded first video signal from the first video format to a formatted first video signal in a fourth video format;', 'converting the decoded second video signal from the second video format to a formatted second video signal in the fourth video format;', 'converting the graphics data in the third video format to formatted graphics data in the fourth video format;', 'interleaving the formatted first video signal, the formatted second video signal, and the formatted graphics data to generate an interleaved video signal;', 'embedding the metadata to the ...

ARCHITECTURE FOR RENDERING HIGH DYNAMIC RANGE VIDEO ON ENHANCED DYNAMIC RANGE DISPLAY DEVICES

Innovations in rendering of high dynamic range (“HDR”) video on a display device having enhanced dynamic range (“EDR”) are described. The peak brightness for an EDR display device is lower than the peak brightness for a typical HDR display device but higher than the peak brightness for a typical display device having standard dynamic range. The increased range of brightness values in an EDR display device can be utilized effectively to show bright highlights of the HDR video. For example, decision logic is configured to evaluate a peak brightness of a target display device and select an HDR-to-EDR tone mapping mode. A tone mapper is configured to apply tone mapping to input values for the sample values of HDR video, according to a tone mapping function, thereby producing output values for sample values of EDR video. 1. A computer system comprising one or more processing units and memory , wherein the computer system implements a video playback system that includes: receive an indication of a peak brightness of a target display device;', 'determine if the peak brightness of the target display device is above a typical peak brightness for a standard dynamic range (“SDR”) display device and below a typical peak brightness for a high dynamic range (“HDR”) display device;', 'if so, select an HDR-to-enhanced dynamic range (“EDR”) tone mapping mode;, 'decision logic configured toa streaming controller configured to request encoded data for HDR video;an input buffer configured to store the encoded data;a video decoder configured to decode the encoded data, and thereby produce sample values of HDR video; anda tone mapper configured to apply tone mapping to input values for the sample values of HDR video, according to a tone mapping function that is based at least in part on the peak brightness of the target display device, and thereby produce output values for sample values of EDR video.2. The computer system of claim 1 , wherein claim 1 , to determine if the peak brightness ...

TECHNIQUE FOR PROVIDING PROGRAMMING CONTENT THROUGH A COMMUNICATIONS NETWORK HAVING LIMITED BANDWIDTH

In a cable television system, a specific carrier is assigned to deliver programming content of a program channel to a service area for a period, defined as a function of viewership of the program channel during that period. For example, the program channel is assigned the specific carrier during the time when it has a generally strong viewership. Otherwise, the program channel is assigned a carrier on an as needed basis, i.e., only when one or more subscribers in the service area request such a program channel. Viewing statistics are generated to identify viewership patterns or viewing habits of the subscribers in the service area with respect to a given program channel. In another embodiment, based on the viewing statistics, popular and unpopular programs, program elements, program lineups, program channels are identified on a temporal and/or regional basis. 166-. (canceled)67. Apparatus configured to controllably deliver programming content associated with a program source in response to requests from a plurality of terminals in a service area , said apparatus comprising:an interface configured to receive said requests;a memory configured to store a first set of statistics generated based on data obtained from first ones of said requests received during a first time interval; and identify, based on said first set of statistics, that said program source has previously attained a threshold level of demand in said service area at an identified period of time within said first time interval;', 'based on said identification, assign a selected carrier to deliver said programming content associated with said program source to said service area during said identified period of time, said carrier not reassigned to a different program source when there are no user requests for said programming content nor users currently tuned to said programming content; and', 'deliver said programming content associated with said program source to said service area according to switched ...

Small form factor pluggable unit used as a video signal conversion device

The present disclosure relates to devices comprising small form factor pluggable units (SFP) having connectors for receiving and sending signals and a processor for converting the received signals prior to sending the converted signals. Received or sent signals may comprise video signals in various analog or digital formats. Conversion of the received signals may comprise analog to digital or digital to analog conversion, serializing or deserializing a digital signal, frame synchronization of a video signal, and/or cross conversion of a video signal from a first format to a second format.

Video interface conversion device and method

The present disclosure discloses a video interface conversion device that includes a first and a second interface transmission circuit, a color conversion circuit and an image compression circuit. The first and the second interface transmission circuit are respectively electrically coupled to an image source and a display terminal. The second interface transmission circuit negotiates a maximum output bandwidth with the display terminal such that the first interface transmission circuit compares an input data bandwidth of a data signal received from the image source and the maximum output bandwidth. When the maximum output bandwidth is smaller than the input data bandwidth, an image compression and/or a color coding conversion is performed on the data signal, and the data signal having the processed input data bandwidth being smaller than or equal to the maximum output bandwidth is further transmitted by the second interface transmission circuit to the display terminal. 1. A device , comprising:a first interface transmission circuit electrically coupled to an image source;a second interface transmission circuit electrically coupled to a display terminal to negotiate a maximum output bandwidth with the display terminal such that the first interface transmission circuit compares an input data bandwidth of a data signal received from the image source and the maximum output bandwidth;a color conversion circuit; andan image compression circuit;wherein when the maximum output bandwidth is smaller than the input data bandwidth, the image compression circuit is configured to perform image compression on the data signal and/or the color conversion circuit is configured to perform color coding conversion on the data signal so that the processed data signal has the input data bandwidth being smaller than or equal to the maximum output bandwidth, and wherein the processed data signal is further transmitted by the first interface transmission circuit to the display terminal.2. ...

Video editing with connected high-resolution video camera and video cloud server

An apparatus having a server is disclosed. The server may be configured to (i) receive via a network a first clip of video generated by a camera, (ii) receive via the network first information to edit the first clip, (iii) receive via the network one or more segments of a second clip of video generated by the camera as identified by the first information and (iv) create a third clip of video by editing the segments according to the first information. The second clip is generally a higher resolution version of the first clip. The third clip may have the higher resolution.

Hdr metadata transport

A video distribution system transfers a formatted video signal ( 20 ) having elementary streams representing audiovisual content to be rendered in a selected combination and stream information indicative of selectable elementary streams. The formatted video signal represents extended video having an extended range (HDR) of brightness and/or color. A video device ( 21 ) processes input video to provide video processing metadata representing a conversion between standard video and the extended video. The formatted video signal comprises a primary video elementary stream representing standard or extended video, a video processing elementary stream not comprising audiovisual content but comprising video processing metadata representing a conversion between standard and extended video or vice versa, and extended stream information comprising an entry indicative of the video processing elementary stream. Advantageously a video player ( 22 ), for example a BD player, is enabled to render both extended and standard video based on the extended stream information and the video processing elementary stream.

METHOD FOR ENCODING AND METHOD FOR DECODING A COLOR TRANSFORM AND CORRESPONDING DEVICES

The present invention relates to a method for encoding a color transform. The method includes encoding first parameters representative of video signal characteristics of color output decoded pictures remapped by said at least one color transform; and encoding second parameters representative of said the at least on color transform. 120-. (canceled)21. A method for encoding color mapping information comprising at least one color transform , said method comprising:encoding first parameters representative of video signal characteristics of pictures color mapped by said at least one color transform; andencoding second parameters representative of said at least one color transform.22. The method of claim 21 , wherein said pictures are decoded pictures.23. The method of claim 21 , wherein said first parameters representative of video signal characteristics comprise at least one of the following syntax elements:a video signal range indicating a black level and range of the color components;color primaries;a transfer characteristic; andmatrix coefficients for deriving luma and chroma signals from RGB primaries.24. The method according to claim 22 , wherein said first parameters representative of video signal characteristics comprise at least one of the following syntax elements:a first syntax element, wherein said first syntax element has the same semantics as the Video Usability Information video full range flag syntax element except that said first syntax element describes the decoded pictures color mapped by said at least one color transform;a second syntax element, wherein said second syntax element has the same semantics as the Video Usability Information color primaries syntax element except that said second syntax element describes the decoded pictures color mapped by said at least one color transform; a third syntax element, wherein said third syntax element has the same semantics as the Video Usability Information transfer characteristics syntax element except that ...

VIDEO SIGNAL TRANSMISSION DEVICE, VIDEO SIGNAL RECEPTION DEVICE AND VIDEO SIGNAL TRANSFERRING SYSTEM

The present invention relates to a video signal transmission device and the like that can support a variety of system specifications. The device includes a packer unit, an encoder unit, and a serializer. The packer unit generates, from a video signal of one or more pixels, a plurality of block signals having a packet configuration of size corresponding to the number of pixels and the number of tone bits of a color signal constituting a video signal. At this time, a control signal including a pulse having a width corresponding to the number of pixels and the number of tone bits is also generated. The encoder unit applies encoding processing having encoding efficiencies that are different between a first period and a second period of a control signal that are distinguished depending on existence or non-existence of a pulse to the block signals. 1. A video signal transmission device , comprising:a packer unit configured to capture a data enable signal and a video signal constituted by one or more pixel signals, each of which corresponds to one pixel and includes a color signal and a sync signal, and apply packetizing processing to the video signal in accordance with the data enable signal so that the video signal has a packet configuration of size corresponding to the number of pixels per video signal and the number of tone bits of the color signal to generate a plurality of block signals;an encoder unit configured to apply encoding processing to the plurality of block signals to generate a plurality of encoded block signals; anda serializer configured to apply parallel-serial conversion to the plurality of encoded block signals to generate a serial signal, whereinthe packer unit generates a control signal including a pulse having a pulse width corresponding to the number of pixels and the number of tone bits of the color signal, andthe encoder unit applies encoding processing of encoding efficiencies different between a first period of the control signal in which the ...

PROVIDING 3D LOOK-UP TABLE (LUT) ESTIMATION FOR COLOR GAMUT SCALABILITY

Systems and/or methods for estimating color conversion components. A video coding device may receive a picture associated with a first color space. The picture may comprise a first component at a first sampling location, a second component at a second sampling location and the second component at a third sampling location. The video coding device may apply a first interpolation filter to the second component at the second sampling location and the second component at the third sampling location to determine the second component at the first sampling location. The second component at the first sampling location may be associated with the first color space. The video coding device may apply a color conversion model to the first component at the first sampling location and to the second component at the first sampling location to translate the first component at the first sampling location to a second color space. 1. A video coding device , comprising: receive a picture associated with a first color space, wherein the picture comprises a first component at a first sampling location, a second component at a second sampling location and the second component at a third sampling location,', 'apply a first interpolation filter to the second component at the second sampling location and the second component at the third sampling location to determine the second component at the first sampling location, wherein the second component at the first sampling location is associated with the first color space; and', 'apply a color conversion model to the first component at the first sampling location and to the second component at the first sampling location to translate the first component at the first sampling location to a second color space., 'a processor configured to2. The video coding device of claim 1 , wherein the first component is a luma component and the second component is a first chroma component or a second chroma component claim 1 , or wherein the first component is ...

DATA TRANSMISSION METHOD, DATA LOADING DEVICE, DATA PARSING DEVICE AND DATA TRANSMISSION SYSTEM

A data transmission method, a data loading device, a data parsing device, and a data transmission system are described herein. The methods include acquiring original video data, acquiring data to be transmitted, processing the original video data according to the data to be transmitted to obtain target video data, and displaying the target video data and the original video data. The methods may further include after displaying the target video data and the original video data, collecting the displayed target video data and original video data, parsing the original video data and the target video data to obtain the data to be transmitted. 1. A data transmission method comprising:acquiring original video data;acquiring data to be transmitted;processing the original video data according to the data to be transmitted to obtain target video data;displaying the target video data and the original video data.2. The data transmission method of claim 1 , wherein the original video data comprises a plurality of original video frames comprising a respective plurality of original pixel points claim 1 , and wherein processing the original video data according to the data to be transmitted to obtain target video data comprises:converting the data to be transmitted into a plurality of binary data strings, wherein the plurality of binary data strings and the plurality of original video frames are in one-to-one correspondences, wherein ones of the binary data strings comprise a plurality of data segments respectively corresponding to an original pixel point of a respective one of the original video frames corresponding to a respective one of the plurality of binary data strings to which a respective one of the plurality of data belongs;changing a grayscale value of the respective one of the plurality of original pixel points corresponding to a respective data segment of the respective one of the binary data strings according to a first grayscale change value corresponding to the ...

ENHANCEMENT OF HIGH DYNAMIC RANGE CONTENT

The present disclosure relates to methods and devices for video processing. In one aspect, the device may obtain a video stream with a plurality of frames. The device can also map, for each frame of the plurality of frames, a first luminance level associated with the frame to a second luminance level based on a transfer function. In some aspects, the transfer function can also include a first function for a first luminance level range and a second function for a second luminance level range, the first function being non-linear and the second function being polynomial. Additionally, the device can indicate, for each frame of the plurality frames, the second luminance level within the video stream. Moreover, the transfer function can include a third function for a third luminance level range, wherein the third function may be between the first and second functions. 1. A method of video processing , comprising:obtaining a video stream with a plurality of frames;mapping, for each frame of the plurality of frames, a first luminance level associated with the frame to a second luminance level based on a transfer function, the transfer function including a first function for a first luminance level range, a second function for a second luminance level range, and a third function for a third luminance level range, the first function being non-linear and the second function being polynomial; andindicating, for each frame of the plurality frames, the second luminance level within the video stream.2. The method of claim 1 , wherein the first function is a polynomial.3. The method of claim 2 , wherein the first function is convex and the second function is concave.4. The method of claim 3 , wherein the first function is a Bernstein polynomial and the second function is a Bernstein polynomial.5. The method of claim 1 , wherein the first luminance level range is between 0 and xand the second luminance level range is greater than x.6. The method of claim 5 , wherein a slope of the ...

Method for determining block averages for film grain simulation

The present invention provides apparatuses and systems for determining block averages in film grain simulation including determining block averages during a display process and determining block averages during a decoding process. The apparatuses and systems of the present invention exhibit different characteristics in terms of memory requirements and computational cost. More specifically, the first apparatus and system use no external memory, but require either extra reads of the blocks, or internal memory in the display pipeline, while the second apparatus and system require extra memory bandwidth and extra external memory (e.g., RAM).

System and method for transmission, processing, and rendering of stereoscopic and multi-view images

A digital image processing system takes color plus Z channel data as input, preprocesses, decimates, and codes the Z channel in-band as digital watermark data embedded within the color data prior to encoding and transmission. A second digital image processing system receives, decodes, and extracts the decimated Z channel data before applying statistical regularization to restore a full-resolution Z channel prior to depth-image-based rendering.

METHOD, MEDIUM, AND APPARATUS ENCODING AND/OR DECODING AN IMAGE USING THE SAME CODING MODE ACROSS COMPONENTS

A method, medium, and apparatus encoding and/or decoding an image in order to increase encoding and decoding efficiency by performing binary-arithmetic coding/decoding on a binary value of a syntax element using a probability model having the same syntax element probability value for respective context index information of each of at least two image components. 1. A method of decoding an image , the method comprising:obtaining a predicted direction of a luma component of a current block;obtaining a predicted direction of a chroma component corresponding to the predicted direction of the luma component according to one of predetermined decoding modes;obtaining a predicted block based on the predicted direction of the chroma component;obtaining information indicating whether at least one non-zero coefficient is included in a transform block of a predetermined size;obtaining a residue by inverse-transforming the transform block using the information; andrestoring a current image by using the predicted block and the residue,wherein the predicted direction of the chroma component is identical to the predicted direction of the luma component.2. A non-transitory computer readable medium comprising computer readable code to control at least one processing device to implement a method of decoding an image , the method comprising:obtaining a predicted direction of a luma component of a current block;obtaining a predicted direction of a chroma component corresponding to the predicted direction of the luma component according to one of predetermined decoding modes;obtaining a predicted block based on the predicted direction of the chroma component;obtaining information indicating whether at least one non-zero coefficient is included in a transform block of a predetermined size;obtaining a residue by inverse-transforming the transform block using the information; andrestoring a current image by using the predicted block and the residue,wherein the predicted direction of the ...

METHOD, MEDIUM, AND APPARATUS ENCODING AND/OR DECODING AN IMAGE USING THE SAME CODING MODE ACROSS COMPONENTS

A method, medium, and apparatus encoding and/or decoding an image in order to increase encoding and decoding efficiency by performing binary-arithmetic coding/decoding on a binary value of a syntax element using a probability model having the same syntax element probability value for respective context index information of each of at least two image components. 1. A method of decoding an image , the method comprising:obtaining a predicted direction of a luma component of a current block;obtaining a predicted direction of a chroma component corresponding to the predicted direction of the luma component according to one of predetermined decoding modes;obtaining a predicted block based on the predicted direction of the chroma component;obtaining a residue by decoding a bitstream; andrestoring a current image by using the obtained predicted block and the obtained residue,wherein the predicted direction of the chroma component is identical to the predicted direction of the luma component.2. A non-transitory computer readable medium comprising computer readable code to control at least one processing device to implement a method of decoding an image , the method comprising:obtaining a predicted direction of a luma component of a current block;obtaining a predicted direction of a chroma component corresponding to the predicted direction of the luma component according to one of predetermined decoding modes;obtaining a predicted block based on the predicted direction of the chroma component;obtaining a residue by decoding a bitstream; andrestoring a current image by using the obtained predicted block and the obtained residue,wherein the predicted direction of the chroma component is identical to the predicted direction of the luma component. This application is a continuation of U.S. application Ser. No. 14/518,205, filed on Oct. 20, 2014, which is a continuation of U.S. application Ser. No. 11/598,681, filed on Nov. 14, 2006, now U.S. Pat. No. 8,934,541, issued on Jan. 13, ...

METHOD, MEDIUM, AND APPARATUS ENCODING AND/OR DECODING AN IMAGE USING THE SAME CODING MODE ACROSS COMPONENTS

A method, medium, and apparatus encoding and/or decoding an image in order to increase encoding and decoding efficiency by performing binary-arithmetic coding/decoding on a binary value of a syntax element using a probability model having the same syntax element probability value for respective context index information of each of at least two image components. 1. A method of decoding an image , the method comprising:obtaining a predicted direction of a luma component of a current block;obtaining a predicted direction of a chroma component corresponding to the predicted direction of the luma component according to one of predetermined decoding modes;obtaining a predicted block based on the predicted direction of the chroma component;obtaining information indicating whether at least one non-zero coefficient is included in a transform block of a predetermined size;obtaining a residue by inverse-transforming the transform block using the information; andrestoring a current image by using the predicted block and the residue,wherein the predicted direction of the chroma component is identical to the predicted direction of the luma component.2. A non-transitory computer readable medium comprising computer readable code to control at least one processing device to implement a method of decoding an image , the method comprising:obtaining a predicted direction of a luma component of a current block;obtaining a predicted direction of a chroma component corresponding to the predicted direction of the luma component according to one of predetermined decoding modes;obtaining a predicted block based on the predicted direction of the chroma component;obtaining information indicating whether at least one non-zero coefficient is included in a transform block of a predetermined size;obtaining a residue by inverse-transforming the transform block using the information; andrestoring a current image by using the predicted block and the residue,wherein the predicted direction of the ...

SYSTEM AND METHOD OF REDUCING DISTORTION DURING DOWNSAMPLING

A video processing system is provided for reducing distortion in video signals. The system includes a first transfer function that applies a transfer function to a received video signal to generate a gamma corrected video signal in a first color space; and a first matrix component that transforms the gamma corrected video signal in the first color space to a gamma corrected signal in a second color space, and extracts a luminance component from the gamma corrected signal in the second color space. Moreover, the system includes a second transfer function that generates a gamma corrected downsampled video signal in the first color space, and a second matrix component that transforms the gamma corrected video signal in the first color space to a gamma corrected video signal in the second color space, and extracts the chroma component in the second color space. 1. A video processing system for reducing distortion in video signals , the video processing system comprising:a low-pass filter configured to down sample a video signal in a first color space to generate a down-sampled video signal in the first color space;a first transfer function configured to generate a gamma corrected video signal in the first color space from the video signal;a second transfer function configured to generate a gamma corrected down-sampled video signal in the first color space from the generated down-sampled video signal;at least one matrix component configured to generate a gamma corrected video signal in the second color space from the gamma corrected video signal in the first color space, and to generate a gamma corrected down-sampled video signal in the second color space from the gamma corrected down-sampled video signal; andan output configured to transmit at least one of the gamma corrected video signal in the second color space and the gamma corrected down-sampled signal in the second color space to a display device to be displayed thereon.2. The video processing system according to ...

METHOD, APPARATUS AND SYSTEM FOR DETERMINING A LUMA VALUE

A method of determining a luma value from 4:4:4 RGB video data for encoding chroma downsampled 4:2:0 YCbCr video data into a bitstream. A location, in a colour space defined by linear luminance and non-linear 4:2:0 chroma values, is determined from the RGB video data. A region that contains the determined location is determined, the region being one region of a plurality of regions located in the colour space and having a plurality of associated coefficients. One or more of the coefficients associated with the determined region are selected, the selected coefficients being used to map the linear luminance and non-linear 4:2:0 chroma values to a luma value that compensates for a luminance shift introduced by chroma downsampling of the non-linear 4:2:0 chroma values. The method then determines the luma value for encoding into the bitstream according to a function of the selected coefficients and the determined location. 1. A method of determining a luma value from 4:4:4 RGB video data for encoding chroma downsampled 4:2:0 YCbCr video data into a bitstream , the method comprising:determining a location, in a colour space defined by linear luminance and non-linear 4:2:0 chroma values, from the RGB video data;determining a region that contains the determined location, the region being one region of a plurality of regions located in the colour space and having a plurality of associated coefficients;selecting one or more of the coefficients associated with the determined region, the selected coefficients being used to map the linear luminance and non-linear 4:2:0 chroma values to a luma value that compensates for a luminance shift introduced by chroma downsampling of the non-linear 4:2:0 chroma values; anddetermining the luma value for encoding into the bitstream according to a function of the selected coefficients and the determined location.2. The method according to claim 1 , further comprising determining a linear luminance value by converting the YCbCr video data to R ...

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM

An apparatus comprises an unit to receive an input of an input image signal including a high resolution component signal and a low resolution component signal; an unit to obtain a high frequency component signal of the high resolution component signal and obtain a low resolution signal obtained by scaling down the resolution of the high resolution component signal; an unit to change a value of at least one of the low resolution signal and the low resolution component signal based on a combination of a value of the low resolution signal and a value of the low resolution component signal; and an unit to generate an output image signal corresponding to the input image signal based on the at least one of the low resolution signal and the low resolution component signal whose value has been changed, and the high frequency component signal. 1. An image processing apparatus comprising:an input unit configured to receive an input of an input image signal including a high resolution component signal and a low resolution component signal having a lower resolution than a resolution of the high resolution component signal;a first obtaining unit configured to obtain a high frequency component signal of the high resolution component signal included in the input image signal;a second obtaining unit configured to obtain a low resolution signal obtained by scaling down the resolution of the high resolution component signal included in the input image signal;a changing unit configured to change a value of at least one of the low resolution signal and the low resolution component signal based on a combination of a value of the low resolution signal obtained by the second obtaining unit and a value of the low resolution component signal included in the input image signal input by the input unit; anda generation unit configured to generate an output image signal corresponding to the input image signal based on the at least one of the low resolution signal and the low resolution ...

METHOD OF FIXED-RATE LINE-BASED EMBEDDED VIDEO COMPRESSION AND IMAGE PROCESSING APPARATUS USING THE SAME

The disclosure proposes a method of fixed-rate line-based embedded video compression and an image processing apparatus using the same method. The method includes at least the following steps. A current encoding frame is received. Pixels in a current encoding frame are grouped on a line-by-line basis, and the grouped pixels are packed into pixel segments. Complexity information of a current pixel segment is calculated according to the pixels therein and neighboring pixels thereof. The current pixel segment is respectively encoded in a differential pulse-coding modulation (DPCM) mode and a truncation mode to generate a DPCM bitstream and a truncated bitstream according to a quantization parameter (QP). Either the DPCM bitstream or the truncated bitstream is selected and outputted according to the complexity information. An amount of bits used by the current pixel segment is feedback to calculate a new QP corresponding to a next pixel segment to be processed. 1. A method of fixed-rate line-based embedded video compression applicable to an image processing apparatus , wherein the method comprises the following steps:receiving a current encoding frame among a sequence of incoming frames;grouping a plurality of pixels in the current encoding frame on a line-by-line basis and packing the grouped pixels into a plurality of pixel segments comprising a current pixel segment;calculating complexity information of the current pixel segment according to the pixels therein and a plurality of neighboring pixels thereof;encoding the current pixel segment respectively in a differential pulse-coding modulation (DPCM) mode and a truncation mode to generate a DPCM bitstream and a truncated bitstream according to a quantization parameter (QP);selecting and outputting either the DPCM bitstream or the truncated bitstream according to the complexity information; andfeedbacking an amount of bits used by the current pixel segment to calculate a new QP corresponding to a next pixel segment of ...

Image information encoding method and encoder, and image information decoding method and decoder

An image decoding method includes decoding encoded image data to generate a decoded image signal including a luma signal and a chroma signal. The method further includes scaling, when a reference field has a different parity from a current field for motion compensation and when the decoded image signal is in a format in which the number of chroma pixels is vertically different from the number of luma pixels, a chroma motion vector of the chroma signal according to an accuracy for a luma motion vector of the luma signal so that a reference frame will coincide in phase of the chroma signal with a current frame. The method also includes performing motion compensation of the decoded image signal using the scaled chroma motion vector according to the accuracy of the luma motion vector of the luma signal.

Three-Dimensional Visual Display Including Directly Lit Diffusers

A display apparatus uses a LED array having a LED pixel pitch, having LED pixels emitting light with viewing angles θ. A transmissive diffuser panel is mounted with the LED array, having a directly lit, non-planar diffuser panel surface spaced away from the LED array by at least distance D. The distance D and the viewing angles θ being are effective to merge illumination from multiple LED pixels in the LED array on the directly lit diffuser panel surface. A controller is connected to the LED array having circuitry to control the LED array in response to image data to induce display via the diffuser panel of a time varying image with spatially varying colors and intensities. 1. A display apparatus , comprising:a LED array, LED pixels in the LED array emitting light with viewing angles θ;a transmissive diffuser panel mounted with the LED array, having a directly lit, non-planar diffuser panel surface spaced away from the LED array by at least distance D, the distance D and the viewing angles θ being effective to merge illumination from multiple LED pixels in the LED array on the directly lit diffuser panel surface; anda controller connected to the LED array having circuitry to control the LED array in response to image data to induce display via the diffuser panel of a time varying image with spatially varying colors and intensities.2. The apparatus of claim 1 , configured as a ceiling mounted fixture which orients the directly lit claim 1 , non-planar diffuser panel surface relative to a plane of a ceiling claim 1 , and the directly lit claim 1 , non-planar diffuser panel surface includes areas facing laterally relative to the plane of the ceiling.3. The apparatus of claim 1 , wherein the LED array is arranged on a cylindrical form claim 1 , and the directly lit claim 1 , non-planar diffuser panel surface is cylindrical.4. The apparatus of claim 1 , wherein the LED array is disposed on a planar form claim 1 , and the directly lit claim 1 , non-planar diffuser panel ...

REPRODUCTION DEVICE, REPRODUCTION METHOD, AND RECORDING MEDIUM

The present technology relates to a reproduction device, a reproduction method, and a recording medium configured to display content having a large brightness dynamic range with appropriate brightness. 1. A reproduction device comprising:a reading unit configured to read second coded data from a recording medium recording the second coded data between first coded data of a standard video which is a video in a first brightness range and the second coded data of an extended video which is a video in a second brightness range broader than the first brightness range;a first acquisition unit configured to perform communication with a display device capable of displaying the extended video and acquire identification information of the display device;a second acquisition unit configured to acquire brightness adjustment data according to a specification of the display device used to adjust brightness of the extended video based on the identification information of the display device;a decoding unit configured to decode the second coded data;an adjustment unit configured to adjust the brightness of the extended video obtained by decoding the second coded data based on the brightness adjustment data; andan output unit configured to output data of the extended video after the brightness adjustment together with brightness characteristic information representing a characteristic of the brightness of the extended video to the display device.2. The reproduction device according to claim 1 ,wherein the second acquisition unit acquires the brightness adjustment data from a server connected through a network.3. The reproduction device according to claim 2 ,wherein the recording medium is a Blu-ray disc, andwherein a URL of the server is described in a PlayList file or another file recorded on the recording medium.4. The reproduction device according to claim 2 ,wherein the reading unit reads identification information of the recording medium from the recording medium, andwherein the ...

SYSTEMS AND METHODS FOR BACKWARD COMPATIBLE HIGH DYNAMIC RANGE/WIDE COLOR GAMUT VIDEO CODING AND RENDERING

A method to encode high dynamic range and wide color gamut video content with a backward compatible base layer. The base layer may be an HDTV or UHDTV program with Rec.709 colorimetry coded with AVC/H.264 or HEVC/H.265. The coding method provides information for properly rendering the content on displays with a wide range of color and brightness capabilities. 1. An apparatus for coding video content , comprising:a memory unit storing base layer video content of a first dynamic range and a first color gamut and storing enhanced video content of a second dynamic range and a second color gamut, the second dynamic range being higher than the first dynamic range and the second color gamut being wider than the first color gamut; anda processing circuit operationally coupled to the memory unit and configured to generate an enhancement layer comprising luma gain factor information and color vector information based on the base layer video content and the enhanced video content, the enhancement layer indicating a plurality of scaled levels of dynamic range and color gamut, wherein the plurality of scaled levels of dynamic range range from the first dynamic range to the second dynamic range and the plurality of scaled levels of color gamut range from the first color gamut to the second color gamut, wherein the processing circuit is further configured to communicate the base layer video content and the enhancement layer to a display device.2. The apparatus for coding video content of claim 1 , wherein the display device is capable of rendering video content of a third dynamic range and a third color gamut claim 1 , the third dynamic range being higher than the first dynamic range and lower than the second dynamic range and the third color gamut being wider than the first color gamut and narrower than the second color gamut claim 1 , and wherein the enhancement layer indicates scaled video content of the third dynamic range and the third color gamut claim 1 , the scaled video ...

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING BROADCAST SIGNAL SO AS TO ADJUST COLOUR RANGE OF CONTENT

The present invention provides a method and an apparatus for transmitting and receiving a broadcast signal so as to adjust a colour range of content. The method for transmitting a broadcast signal according to an embodiment of the present invention comprises the steps of: encoding video data and signalling information including metadata with respect to the gamut of the video data; generating a broadcast signal including the encoded video data and signalling information; and transmitting the generated broadcast signal. 1. A method of transmitting a broadcast signal , the method comprising:encoding video data and signaling information comprising metadata of gamut of the video data;generating a broadcast signal comprising the encoded video data and signaling information; andtransmitting the generated broadcast signal.2. The method according to claim 1 , wherein the metadata comprises original gamut information indicating gamut of the video data and target gamut information indicating target gamut as a conversion target of gamut of the video data.3. The method according to claim 2 , wherein the metadata comprises information on the number of regions present in the target gamut claim 2 , information indicating a method of distinguishing the regions claim 2 , and detailed information for distinguishing the regions according to the method of distinguishing the regions.4. The method according to claim 3 , wherein the detailed information for distinguishing the regions comprises information on a start point and end point for calculation of a distance as a reference for distinguishing the regions and coordinate information on one or more color spaces for distinguishing the regions.5. The method according to claim 4 , wherein the metadata comprises information indicating a type of a weighting function used to convert gamut of the video data into target gamut and information indicating a coefficient used in the weighting function.6. The method according to claim 5 , wherein:the ...

IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND IMAGE DISPLAY DEVICE

An image processing device includes a luminance signal expansion unit which expands a luminance signal, and a chroma signal correction unit which corrects a chroma signal in a manner adjusted to the expansion of the luminance signal. 1. An image processing device , comprising:a luminance signal expansion unit which expands a luminance signal; anda chroma signal correction unit which corrects a chroma signal in a manner adjusted to the expansion of the luminance signal.2. The image processing device according to claim 1 ,wherein the chroma signal correction unit corrects the chroma signal such that a ratio of the luminance signal to the chroma signal is fixed between before and after the expansion of the luminance signal by the luminance signal expansion unit.3. The image processing device according to claim 2 , further comprising:a chroma signal expansion unit which expands the chroma signal after the chroma signal is corrected by the chroma signal correction unit.4. The image processing device according to claim 3 ,wherein the chroma signal expansion unit expands the chroma signals in a range that does not fall outside of a display color gamut.5. An image processing method claim 3 , comprising:expanding a luminance signal; andcorrecting a chroma signal in a manner adjusted to the expansion of the luminance signal.6. An image display device claim 3 , comprising:a luminance signal expansion unit which expands a luminance signal;a chroma signal correction unit which corrects a chroma signal in a manner adjusted to the expansion of the luminance signal; anda display unit which converts the luminance signal and the chroma signal into an RGB signal and displays the RGB signal. This application claims the benefit of Japanese Priority Patent Application JP 2014-042859 filed Mar. 5, 2014, the entire contents of which are incorporated herein by reference.The present disclosure relates to an image processing device and an image processing method which process a high dynamic ...

PLAYBACK METHOD ACCORDING TO FUNCTION OF PLAYBACK DEVICE

A method to be performed by a playback device includes determining whether the playback device has a function for converting first graphics in a second luminance range narrower than a first luminance range to second graphics in the first luminance range, when the playback device has the function, converting the first graphics to the second graphics, and displaying a video in the first luminance range with the second graphics being superimposed on the video, and when the playback device does not have the function, displaying the video with third graphics different from the second graphics being superimposed on the video. 1. A playback device comprising:a first remapper that reads a video signal having a first luminance range from a recording medium, performs electro-optical transfer function (EOTF) conversion associated with the first luminance range on a code value represented by a luminance signal in the video signal to obtain a first luminance value, and converts the first luminance value into a second luminance value associated with a second luminance range different in maximum value from the first luminance range;a second remapper that reads a graphics signal having the first luminance range from the recording medium and performs the EOTF conversion associated with the first luminance range on a code value represented by a luminance signal in the graphics signal to obtain a first luminance value;a synthesizer that synthesizes the video signal having a luminance value converted by the first remapper with the graphics signal having a luminance value not converted by the second remapper; andan outputter that outputs a signal synthesized by the synthesizer to a display device.2. The playback device according to claim 1 , whereinthe first remapper performs the EOTF conversion using a table representing an association relationship between the first luminance value in the first luminance range and the second luminance value in the second luminance range.3. The playback ...

Transform Kernel Selection and Entropy Coding

Transform kernel candidates including a vertical transform type associated with a vertical motion and a horizontal transform type associated with a horizontal motion can be encoded or decoded. During an encoding operation, a residual block of a current block is transformed according to a selected transform kernel candidate to produce a transform block. A probability model for encoding the selected transform kernel candidate is then identified based on neighbor transform blocks of the transform block. The selected transform kernel candidate is then encoded according to the probability model. During a decoding operation, the encoded transform kernel candidate is decoded using the probability model. The encoded transform block is then decoded by inverse transforming dequantized transform coefficients thereof according to the decoded transform kernel candidate. 1. A method for encoding transform kernel candidates selected for blocks of a video frame , the method comprising:selecting one of a plurality of transform kernel candidates for transforming a residual block of a current block of the video frame, the selected transform kernel candidate including a vertical transform type associated with a vertical motion of the residual block and a horizontal transform type associated with a horizontal motion of the residual block;transforming the residual block according to the selected transform kernel candidate to produce a transform block including transform coefficients;quantizing the transform coefficients;responsive to determining that at least one of the quantized transform coefficients is a non-zero coefficient, identifying a probability model for encoding the selected transform kernel candidate, the probability model identified based on a first transform kernel candidate selected for an above neighbor transform block of the transform block and a second transform kernel candidate selected for a left neighbor transform block of the transform block; andencoding the ...

Compressing Image Data

Methods, systems, and computer programs for encoding and decoding image are described. In some aspects, an input data block and a prediction data block are accessed. A projection factor is generated based on a projection of the input data block onto the prediction data block. A scaled prediction data block is generated by multiplying the projection factor by the prediction data block. A residual data block is generated based on a difference between the input data block and the scaled prediction data block. In some aspects, a prediction data block, a residual data block, and a projection factor associated with the residual data block are accessed. A scaled prediction data block is generated by multiplying the projection factor by the prediction data block. An output data block is generated by summing the residual data block and the scaled prediction data block.

REPRODUCTION METHOD AND REPRODUCTION APPARATUS

In a reproduction method, a first video stream has a first dynamic range where a maximum value of a luminance dynamic range is more than 100 nits, and a display apparatus displays video in a second dynamic range narrower than the first dynamic range. The method determines whether the first video stream is quantized based on a hybrid OETF. When it is determined that the first video stream is quantized based on the hybrid OETF, the first video stream is reproduced. When it is determined that the first video stream is not quantized based on the hybrid OETF, a luminance dynamic range of the first video stream is converted from the first dynamic range to the second dynamic range to obtain a second video stream, and the second video stream is reproduced.

MULTI-CAMERA SERIAL VIDEO DATA CONVERSION FOR GRAPHICS PROCESSING UNIT (GPU) INTERFACE

Systems, methods, and apparatus for converting serial video data for a graphics processing unit (GPU) interface are disclosed. In one or more embodiments, a disclosed method comprises receiving, by each of a plurality of gigabit multimedia serial link (GMSL) conversion modules, n-bit length serial video data from a plurality of high-resolution cameras respectively. The method further comprises converting, by each of the GMSL conversion modules, the n-bit length serial video data to m-bit length serial GMSL video data, where n is equal to twice m. Also, the method comprises receiving, by a GMSL to camera series interface (CSI) conversion unit, the m-bit length serial GMSL video data from each of the GMSL conversion modules. Further, the method comprises converting, with the GMSL to CSI conversion unit, the m-bit length serial GMSL video data to m-bit length serial CSI video data, which is compatible with the GPU interface. 1. A method for converting serial video data for a graphics processing unit (GPU) interface , the method comprising:receiving, by each of a plurality of gigabit multimedia serial link (GMSL) conversion modules, n-bit length serial video data from a plurality of high-resolution cameras respectively;converting, by each of the GMSL conversion modules, the n-bit length serial video data to m-bit length serial GMSL video data, wherein n is equal to twice m, and wherein the m-bit length serial GMSL video data is related to one of a color or an intensity of a pixel;receiving, by a GMSL to camera series interface (CSI) conversion unit, the m-bit length serial GMSL video data from each of the GMSL conversion modules; andconverting, with the GMSL to CSI conversion unit, the m-bit length serial GMSL video data to m-bit length serial CSI video data, which is compatible with the GPU interface.2. The method of claim 1 , wherein the converting claim 1 , by each of the GMSL conversion modules claim 1 , of the n-bit length serial video data to the m-bit length ...

Modifying a scan order to limit scan distance

Generating a new scan order includes incrementing a next index value after assigning the next index value to a coefficient in the new scan order; assigning, to a first coefficient at a first scan index m in the original scan order, a first scan index in the new scan order, the first coefficient is a context coefficient for entropy coding a parent coefficient that is at a parent scan index n in the original scan order; adding, to a list, a first item indicative of the parent coefficient and parent scan index n; before assigning a second scan index to a second coefficient that is at a second index m+j in the original scan order, wherein j>1, assigning the next index value to the parent coefficient, and removing the first item from the list; and assigning the next index value to the second coefficient in the new scan order.

DATA PROCESSING METHOD, DATA SENDING END, DATA RECEIVING END, AND COMMUNICATION SYSTEM

A data processing method includes mapping original data in ARGB format into mapped data in RGB format, and sending the mapped data to a data receiving terminal through a first display serial interface (DSI) for the data receiving terminal to receive the mapped data through a second DSI and to inversely map the mapped data to obtain the original data. 1. A data processing method comprising:mapping original data in ARGB format into mapped data in RGB format; andsending the mapped data to a data receiving terminal through a first display serial interface (DSI) for the data receiving terminal to receive the mapped data through a second DSI and to inversely map the mapped data to obtain the original data.2. The method of claim 1 , wherein mapping the original data into the mapped data includes converting every 3 pieces of the original data in ARGB format into 4 pieces of the mapped data in RGB format.3. The method of claim 2 , wherein mapping the original data into the mapped data further includes claim 2 , in response to a number s of pieces of remaining original data being smaller than 3:obtaining k pieces of padding ARGB data each having a specific value, k being an integer smaller than 3 and k+s=3; andconverting the k pieces of padding ARGB data and the remaining original data into 4 pieces of RGB data.4. The method of claim 3 , wherein the specific value is zero.5. The method of claim 3 , wherein converting the k pieces of padding ARGB data and the remaining original data into the 4 pieces of RGB data includes:adding the k pieces of padding ARGB data to an end of the remaining original data to form a 3-piece ARGB data segment with the k pieces of padding ARGB data as a tail of the 3-piece ARGB data segment; andconverting the 3-piece of ARGB data segment into the 4 pieces of RGB data.6. A data processing method comprising:receiving mapped data in RGB format sent by a data sending terminal through a first display serial interface (DSI) of the data sending terminal, ...

METHOD FOR ENCODING AND METHOD FOR DECODING A COLOUR TRANSFORM AND CORRESPONDING DEVICES

A method for encoding a colour transform is disclosed that comprises encoding first parameters representative of video signal characteristics of colour output decoded pictures remapped by said at least one color transform and encoding second parameters representative of said at least one colour transform. 1. A method for encoding , comprising:encoding first parameters representative of video signal characteristics of decoded pictures color mapped by at least one color transform; andencoding second parameters representative of said at least one color transform,wherein said first parameters representative of video signal characteristics comprise at least one of the following syntax elements:a first syntax element, wherein said first syntax element has the same semantics as the Video Usability Information video full range flag syntax element except that said first syntax element describes the decoded pictures color mapped by said at least one color transform;a second syntax element, wherein said second syntax element has the same semantics as the Video Usability Information color primaries syntax element except that said second syntax element describes the decoded pictures color mapped by said at least one color transform;a third syntax element, wherein said third syntax element has the same semantics as the Video Usability Information transfer characteristics syntax element except that said third syntax element describes the decoded pictures color mapped by said at least one color transform; anda fourth syntax element, wherein said fourth syntax element has the same semantics as the Video Usability Information matrix coefficients syntax element except that fourth syntax element describes the decoded pictures color mapped by said at least one color transform andwherein said second parameters comprise at least one of a Look-Up Table and a three-by-three matrix.2. The method according to claim 1 , wherein said method further comprises encoding a fifth syntax element for ...

Processing video streams

A method of creating a video stream is provided. The method includes receiving into non-transitory memory first and second video streams. The first video stream is different from the second video stream. Each video stream includes a series of video images each having a plurality of pixels. Each pixel has a luminance component and two chrominance components. The method includes converting, using a computing processor, the luminance component of a first pixel in a first image of the first video stream into an opacity component. The method also includes combining, using the computing processor, the opacity component of the first pixel and color components of a second pixel into an output pixel. Finally, the method includes outputting an output video stream comprising the output pixel.

COLOR CORRECTION WITH A LOOKUP TABLE

Color correction in high dynamic range video (HDR) using 2D look-up table (LUT) may be provided. The color correction may be applied in a decoder after decoding the HDR video signal. For example, the color correction may be applied before, during, or after chroma upsampling of the HDR video signal. The 2D LUT may include a representation of the color space of the HDR video signal. The color correction may include applying triangle interpolation to the sample values of the color component of the color space. The 2D LUT may be estimated by an encoder and signaled to the decoder. The encoder may decide to reuse a prior-signaled 2D LUT or use a new 2D LUT. 1. A method for processing video content , the method comprising:receiving a first luma sample, a first chroma sample, and a two-dimensional (2D) look-up table (LUT) for producing corrected chroma values, wherein the 2D LUT defines a luma dimension and a chroma dimension associated with a 2D color space of the video content;determining an input luma value and an input chroma value to the 2D LUT based on at least one of the first luma sample or the first chroma sample, wherein the input luma value and the input chroma value are aligned to a same sampling location;producing an output chroma value based on the 2D LUT, the input chroma value and the input luma value; andreconstructing the video content using at least the output chroma value.2. The method of claim 1 , wherein the 2D color space of the video content is defined by a plurality of rectangular units with respective vertices claim 1 , and wherein the 2D LUT comprises chroma component values associated with the respective vertices.3. The method of claim 2 , wherein the plurality of rectangular units of the 2D color space are derived using quadtree partitioning.4. The method of claim 2 , wherein the producing of the output chroma value comprises:determining a first rectangular unit among the plurality of rectangular units to which the input luma value and the ...

SOLID-STATE IMAGING APPARATUS AND METHOD OF CONTROLLING THE SAME

A solid-state imaging apparatus comprises a pixel array, a first column output line provided for each column of the pixel array, a first constant current source, a scanning unit configured to select the pixel portions for each row, and a current control unit configured to control current values, wherein the scanning unit can switch between a normal readout mode and a mixing readout mode, and in the mixing readout mode, the current control unit controls the current values of the first column output lines so that the current value of the first column output line to which the signals of at least one color are simultaneously output is smaller than the current value of the first column output line to which the signals of another color are simultaneously output. 1. A solid-state imaging apparatus comprising:a pixel array in which a plurality of pixel portions each configured to output a photo-electrically converted signal are arrayed two-dimensionally, and a color filter is provided in each of the plurality of pixel portions;a first column output line provided for each column of said pixel array;a first constant current source configured to supply a current for each of said first column output lines;a scanning unit configured to select the pixel portions for each row, and control output of signals from the selected pixel portions to said first column output lines; anda current control unit configured to control current values of said first column output lines for respective colors of the color filters,wherein said scanning unit can switch between a normal readout mode in which the pixel portions are selected for each row and the signals of the pixel portions on the selected row are output to said first column output lines and a mixing readout mode in which the pixel portions are selected for a plurality of rows and the signals of the plurality of pixel portions with the color filters of the same color are simultaneously output to said first column output line, andin the ...

INFORMATION PROCESSING APPARATUS, INFORMATION RECORDING MEDIUM, INFORMATION PROCESSING METHOD, AND PROGRAM

Image reproduction according to a display apparatus is realized by acquiring image information of an ultra-high definition (UHD) image from a playlist file or a clip information file. A data processing unit that performs a reproduction process of a disc recording data acquires a playlist file or a clip information file as a reproduction control information file corresponding to reproduction data recorded in a disc, determines whether or not an ultra-high definition (UHD) image is recorded in the disc based on recording data of such a file, and, in a case where the ultra-high definition (UHD) image is recorded in the disc, acquires image information of the ultra-high definition (UHD) image from the reproduction control information and controls output data for a display apparatus based on the acquired image information. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. An information processing apparatus comprising:a data processing unit that performs a reproduction process of a disc recording data, wherein acquires a reproduction control information file corresponding to reproduction data recorded in a disc,', 'determines whether or not an ultra-high definition (UHD) image is recorded in the disc based on recording data of the acquired reproduction control information file, and', 'acquires image information of the ultra-high definition (UHD) image from the reproduction control information and controls output data for a display apparatus based on the acquired image information in a case where the ultra-high definition (UHD) image is recorded in the disc,, 'the data processing unit'}wherein the reproduction control information file is a playlist file,wherein the data processing unit acquires the image information of the ultra-high definition (UHD) image from the playlist file and controls the output data for the display apparatus based on the acquired image information, andwherein the data processing unit acquires the image information of the ultra- ...

METHODS AND APPARATUSES FOR PROCESSING OR DEFINING LUMINANCE/COLOR REGIMES

To allow a better coordination between an image creation artist such as a movie director of photography and the final viewer, via a receiving-side display and its corresponding image processing, a method of adding display rendering specification information to an input image signal (I) comprises determining descriptive data (D) that includes at least identification information for at least one luminance regime subset of pixels of an input image; and encoding the descriptive data (D) into an output description data signal (DDO), relatable to an output image signal (O) based upon an input image signal (I), of the descriptive data (D) in a technical format standardized to be intended for use by a receiving-side display to control its image processing for changing the color properties of its rendered images. 1. A method of processing an input image signal (O) that comprises video images graded or defined in accordance with a maximum luminance value being a coding peak brightness (PB_C) of an image encoding that corresponds with an uppermost luminance of a luminance dynamic range (DR) , which video images are encoded in a video transmission encoding suitable for communicating video to a video rendering-side , the video images for being processed to be rendered on one of various rendering-side video displays having different output luminance dynamic ranges defined by the uppermost luminance being a display-dependent display peak brightness (PB_D) , and the processing being based on descriptive data (D) of an output description data signal (DDO) related to the video images , said method comprising:extracting from an encoding of the output description data signal (DDO), the descriptive data (D) for use in specifying at least one luminance regime, wherein the descriptive data (D) comprises at least identification information for at least one subset of pixels of an input video image, wherein the identification information includes at least one luminance value (L_x) ...

IMAGING APPARATUS, IMAGING PROCESSING METHOD, IMAGE PROCESSING DEVICE AND IMAGING PROCESSING SYSTEM

An imaging apparatus includes: an image sensor; a signal processing unit repeatedly performing processing different from each other in a given number of sequential frames to imaging signals obtained by the image sensor to thereby obtain image data of respective frame; and an image data output unit sequentially outputting the image data of respective frames. 1. An imaging apparatus comprising:signal processing circuitry electrically connected to image acquisition circuitry, the image acquisition circuitry is configured to convert a signal of an image into sequential frames of image data,wherein the signal processing circuitry is configured to:electronically receive the sequential frames from the image acquisition circuitry,electronically add visual image identification information to said one of the sequential frames,electronically add image recognition identification information to said one of the sequential frames after the signal processing circuitry performs the image recognition process.2. The imaging apparatus according to claim 1 , wherein the signal processing circuitry is configured to perform visual frame processing.3. The imaging apparatus according to claim 1 , wherein the signal processing circuitry is configured to perform image recognition processing.4. The imaging apparatus according to claim 1 , wherein the signal processing circuitry includes imaging signal processing circuitry.5. The imaging apparatus according to claim 4 , wherein the imaging signal processing circuitry is configured to perform automatic exposure adjustment on the signal of the image.6. The imaging apparatus according to claim 4 , wherein the imaging signal processing circuitry is configured to perform automatic white balance adjustment on the signal of the image.7. The imaging apparatus according to claim 1 , wherein the signal processing circuitry includes post processing circuitry.8. The imaging apparatus according to claim 7 , wherein the post processing circuitry is ...

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

An image processing apparatus comprising, an acquiring unit configured to acquire an encoding target block having a plurality of groups each including a predetermined number of pixels, a deciding unit configured to decide for each group a quantization parameter used to quantize image data of the group and an encoding scheme so that a code length of the encoding target block does not exceed a predetermined value, and an encoding unit configured to generate encoded data by encoding image data of the encoding target block in accordance with the quantization parameters and the encoding schemes decided for the respective groups by the deciding unit. 1. An image processing apparatus comprising:an acquiring unit configured to acquire an encoding target block having a plurality of groups each including a predetermined number of pixels;a deciding unit configured to decide for each group a quantization parameter used to quantize image data of the group and an encoding scheme so that a code length of the encoding target block does not exceed a predetermined value; andan encoding unit configured to generate encoded data by encoding image data of the encoding target block in accordance with the quantization parameters and the encoding schemes decided for the respective groups by the deciding unit,wherein the encoding unit encodes the image data using a first encoding scheme that outputs quantized image data and a second encoding scheme that outputs encoded data of a differential between quantized image data and prediction data,wherein the deciding unit decides, as the encoding scheme of the respective groups, whichever of the first encoding scheme and the second encoding scheme that can obtain a smaller code length, andwherein the deciding unit decides, as the quantization parameter of the respective groups, either a first quantization parameter or a second quantization parameter corresponding to a quantization step smaller than a quantization step corresponding to the first ...

METHOD AND APPARATUS FOR RECEIVING VIDEO

Provided is a method and apparatus for converting, to a digital video signal, an analog video signal capable of having a variety of resolutions. A video reception apparatus determines a format of an analog video signal by sampling the analog video signal. The video reception apparatus converts the analog video signal to a digital video signal based on the determined format. A comb filter is used to separate a color difference signal and a luminance signal from the digital video signal, and the digital video signal is reconfigured using the luminance signal and the color difference signal. 1. A method of receiving a video , the method comprising:receiving an analog video signal;adaptively determining a format of the analog video signal based on the analog video signal;converting the analog video signal to a digital video signal based on a sampling frequency corresponding to the determined format;separating the digital video signal into a luminance signal and a color difference signal using an adaptive comb filter; andreconfiguring the digital video signal based on the luminance signal and the color difference signal,wherein the determining of the format comprises:sampling the analog video signal at a preset sampling frequency;determining the format of the analog video signal based on a result of the sampling; andresetting the sampling frequency corresponding to the determined format as a basic sampling frequency.2. The method of claim 1 , wherein the comb filter is adaptively adjusted based on a burst frequency corresponding to the determined format.3. The method of claim 1 , further comprising:removing noise from at least one of the luminance signal and the color difference signal.4. The method of claim 3 , wherein the removing of the noise comprises removing the noise using a low pass filter.5. (canceled)6. The method of claim 1 , wherein the determining of the format of the analog video signal based on the result of the sampling comprises determining the format of ...

REPRODUCTION METHOD AND REPRODUCTION APPARATUS

In a reproduction method, a first video stream has a first dynamic range where a maximum value of a luminance dynamic range is more than 100 nits, and a display apparatus displays video in a second dynamic range narrower than the first dynamic range. The method includes: determining whether the first video stream is quantized based on a hybrid OETF; (i) when it is determined that the first video stream is quantized based on the hybrid OETF, reproducing the first video stream; and (ii) when it is determined that the first video stream is not quantized based on the hybrid OETF, converting a luminance dynamic range of the first video stream from the first dynamic range to the second dynamic range to obtain a second video stream, and reproducing the second video stream. 1. A reproduction method comprising:determining whether a first video stream is quantized based on a hybrid OETF, the first video stream has a first dynamic range where a maximum value of a luminance dynamic range is more than 100 nits;(i) when it is determined that the first video stream is quantized based on the hybrid OETF, obtaining a first reproduction signal by reproducing the first video stream, and outputting the first reproduction signal to a display apparatus, the display apparatus displays video in a second dynamic range narrower than the first dynamic range; and(ii) when it is determined that the first video stream is not quantized based on the hybrid OETF, converting a luminance dynamic range of the first video stream from the first dynamic range to the second dynamic range to obtain a second video stream, obtaining a second reproduction signal by reproducing the second video stream, and outputting the second reproduction signal to the display apparatus.2. The method according to claim 1 , wherein the hybrid OETF is an OETF that supports the first dynamic range and that is compatible with an OETF that supports the second dynamic range in a low-luminance area.3. The method according to claim ...

FRAME GENERATION APPARATUS, FRAME GENERATION METHOD, IMAGE RESTORATION APPARATUS, IMAGE RESTORATION METHOD, IMAGE TRANSMISSION SYSTEM, AND IMAGE TRANSMISSION METHOD

[Object] It is desired to provide a technology capable of suppressing the production cost of a system in which a video signal is transmitted via a plurality of transmission paths. [Solution] Provided is a frame generation apparatus including: an image division section configured to, in a case where a horizontal-direction pixel number in a video signal is set to integers of 0 to N−1 and a vertical-direction line number in the video signal is set to integers of 0 to M−1, perform an operation of dividing a pixel group included in a line of which the vertical-direction line number is 2m and a pixel group included in a line of which the vertical-direction line number is (2m+1) on a basis of color format information of the video signal, for all integers m satisfying 0≤m≤(M/2)−1, and thereby obtain a plurality of divided signals; and a frame generation section configured to generate a plurality of frames individually including the plurality of divided signals. 1. A frame generation apparatus comprising:an image division section configured to, in a case where a horizontal-direction pixel number in a video signal is set to integers of 0 to N−1 and a vertical-direction line number in the video signal is set to integers of 0 to M−1, perform an operation of dividing a pixel group included in a line of which the vertical-direction line number is 2m and a pixel group included in a line of which the vertical-direction line number is (2m+1) on a basis of color format information of the video signal, for all integers m satisfying 0≤m≤(M/2)−1, and thereby obtain a plurality of divided signals; anda frame generation section configured to generate a plurality of frames individually including the plurality of divided signals.2. The frame generation apparatus according to claim 1 ,wherein the frame generation section marks a frame start identifier on a head of the frame.3. The frame generation apparatus according to claim 2 ,wherein the frame generation section marks position information ...

Image coding apparatus, image coding method, and program, and image decoding apparatus, image decoding method, and program

An image coding method for an image coding apparatus configured to divide an image into divisional blocks of a plurality of sizes and to perform coding on the image while controlling image quality according to a parameter value in units of divisional blocks includes acquiring a block size of a target block to be coded, acquiring a minimum block size used to control the parameter value, acquiring a state of division of the target block, acquiring the parameter value, determining whether the target block is divided according to the state of division of the target block, determining whether the block size of the target block is greater than or equal to the minimum block size, determining whether the block size of the target block is equal to the minimum block size, and coding the acquired parameter value.

Method and System for Improving Compressed Image Chroma Information

Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the color video image. Another aspect includes utilizing a lower or higher value of a quantization parameter (QP) for one or more chroma channels as compared to the luminance channel Another aspect is use of a logarithmic representation of a video image to benefit image coding. Another aspect uses more than two chroma channels to represent a video image.

Resilient image compression and decompression

An image processing method includes selecting an image in fixed storage of a computer and loading the selected image into memory of the computer. The method further includes representing the loaded image by a processor of the computer in the memory as an initial two-dimensional array of pixel values. Thereafter, the initial two-dimensional array of pixel values may be transformed into a hierarchy of progressively axially decremented two-dimensional arrays of signs and a pair of one-dimensional values for each 2×2 array of signs amongst the decremented two-dimensional arrays of signs. Finally, each of the two-dimensional arrays of signs and each pair of one-dimensional values may be stored in the fixed storage as a compressed form of the selected image.

Reproduction device, reproduction method, and recording medium

The present technology relates to a reproduction device, a reproduction method, and a recording medium that enable graphics with an appropriate brightness to be displayed on a video having a wide dynamic range of brightness. A recording medium, on which the reproduction device of one aspect of the present technology performs reproduction, records coded data of an extended video that is a video having a second brightness range that is wider than a first brightness range, brightness characteristic information that represents a brightness characteristic of the extended video, and graphics data that is superimposed on the extended video and that has the first brightness range. The reproduction device converts a first pixel value of the graphics to a second pixel value in the brightness characteristic of the extended video represented by the brightness characteristic information, the second pixel value representing brightness that is equivalent to brightness represented by the first pixel value in a brightness characteristic of the graphics, and synthesizes the extended video, the extended video being obtained by decoding the coded data, together with graphics having the second pixel value. The present technology can be applied to players that reproduce contents.

Coding of intra modes

A method of encoding a video image includes, for each one of blocks of the video image, calculating virtual gradient values in the block depending on neighboring gradient values computed in a causal neighborhood of the block and acquiring one prediction direction or non-directional intra prediction mode based on the virtual gradient values; and determining a coding mode by comparing different predictions for the block, acquiring a predicted block by applying the determined “coding mode”, acquiring a residual error between the predicted block and the current block and encoding a difference between the determined coding mode and the prediction direction or non-directional intra prediction mode. The calculating includes, for each prediction direction, propagating the neighboring gradient values along the prediction direction to estimate the virtual gradient values in the block.

Methods of Palette Based Prediction for Non-444 Color Format in Video and Image Coding

A method of video coding using palette coding mode for color video in a non-444 color format is disclosed. The non-444 video data can be converted to the 444 format so that the palette designed for the 444 format can be used for the non-444 video data. For the 4:2:0 color format, each chroma sample collocated with corresponding quad luma samples is padded with three chroma samples to form converted quad chroma samples. For the 4:2:0 color format, if a current pixel does not belong to the color palette, one or more escape values are signaled for the current pixel and the escape value associated with the chroma sample of the current pixel for each color component is not signaled for three of the quad chroma sample locations collocated with corresponding quad luma samples. 1. A method of video coding using a palette coding mode for color video in a non-444 color format , wherein the color video consists of one first-color component and one or more second-color components , the method comprising:receiving input data associated with a current block in a current picture, wherein the current block consists of one first-color block corresponding to said one first-color component and one or more second-color blocks corresponding to said one or more second-color components, and wherein second-color samples of each second-color block have reduced spatial resolution compared to first-color samples of the first-color block;converting the second-color samples of each second-color block into converted second-color samples of each second-color block having full spatial resolution the same as the first-color samples of the first-color block;generating each entry of a color palette using one first-color sample of the first-color block and one converted second-color sample of each second-color block; andconverting the first-color samples of the first-color block and the second-color samples of said one or more second-color blocks into an index map of the current block according to the ...

Efficient 10-Bit Pixel Formatting of Uncompressed 4K Video Signals for Distributed Processing

A method including: receiving 16 10-bit Y samples stored in respective 16-bit words; logically ORing the 16 10-bit Y samples with the lowest 5-bits corresponding to each of the next 16 10-bit U samples; receiving the first consecutive 16 10-bit Y samples stored in respective 16-bit words; logically ORing the next consecutive 16 10-bit Y samples with the highest 5-bits corresponding to each of the next 16 10-bit U samples; receiving the second consecutive 16 10-bit Y samples stored in respective 16-bit words, logically ORing the second consecutive 16 10-bit Y samples with the lowest 5-bits corresponding to each of the next 16 10-bit V samples; receiving the third consecutive 16 10-bit Y samples stored in respective 16-bit words; and logically ORing the third consecutive 16 10-bit Y samples with the highest 5-bits corresponding to each of the next 16 10-bit V samples.

Color television signal transmission system

カラ−映像信号のデイジタル処理装置

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Color television camera unit

Video, audio and graphics decode, composite and display system

A video, audio and graphics system uses multiple transport processors to receive in-band and out-of-band MPEG Transport streams, to perform PID and section filtering as well as DVB and DES decryption and to de-multiplex them. The system processes the PES into digital audio, MPEG video and message data. The system is capable of decoding multiple MPEG SLICEs concurrently. Graphics windows are blended in parallel, and blended with video using alpha blending. During graphics processing, a single-port SRAM is used equivalently as a dual-port SRAM. The video may include both analog video, e.g., NTSC/PAL/SECAM/S-video, and digital video, e.g., MPEG-2 video in SDTV or HDTV format. The system has a reduced memory mode in which video images are reduced in half in horizontal direction only during decoding. The system is capable of receiving and processing digital audio signals such as MPEG Layer 1 and Layer 2 audio and Dolby AC-3 audio, as well as PCM audio signals. The system includes a memory controller. The system includes a system bridge controller to interface a CPU with devices internal to the system as well as peripheral devices including PCI devices and I/O devices such as RAM, ROM and flash memory devices. The system is capable of displaying video and graphics in both the high definition (HD) mode and the standard definition (SD) mode. The system may output an HDTV video while converting the HDTV video and providing as another output having an SDTV format or another HDTV format.

Digital video storage

A simple, efficient technique for encoding NTSC video signals features sampling the signal at 8/3 the subcarrier frequency, generating no more than 256K samples for a full 525 line frame, generating as many samples per horizontal scan line as there are columns in a memory where the frame is to be stored, incrementing a row address counter for the memory once for each new horizontal scan line, and providing an analog reproduction of the color burst signal directly from and based solely on the digital samples of the color burst signal.

Digital video signal processing system

A signal separator performs an inter-line operation on a composite color video signal, thereby separating it into a luminance signal and a chrominance signal. A scan converter converts each of the luminance signal and the chrominance signal into a sequential scan signal on the basis of the double-speed changing of the luminance signal and the chrominance signal. A signal determination circuit determines whether the composite color video signal is a standard signal or a non-standard signal. A first clock producer produces first clocks to be phase-locked to a color subcarrier in accordance with the composite color digital video signal. A second clock producer produces second clocks to be phase-locked to horizontal synchronizing signals in accordance with the composite color digital video signal. A first controller causes the signal separator and the scan converter to operate in accordance with the first clocks when the signal determination circuit determines that the signal is a standard signal. A second controller causes the signal separator to operate in accordance with the first clocks, causes the scan converter to operate in accordance with the second clocks, and converts a sampling rate of each of the luminance signal and the chrominance signal separated by the signal separator in accordance with the first clock into a rate of the second clocks when the signal determination circuit determines that the signal is a non-standard signal.

Video, audio and graphics decode, composite and display system

A video, audio and graphics system uses multiple transport processors to receive in-band and out-of-band MPEG Transport streams, to perform PID and section filtering as well as DVB and DES decryption and to de-multiplex them. The system processes the PES into digital audio, MPEG video and message data. The system is capable of decoding multiple MPEG SLICEs concurrently. Graphics windows are blended in parallel, and blended with video using alpha blending. During graphics processing, a single-port SRAM is used equivalently as a dual-port SRAM. The video may include both analog video, e.g., NTSC/PAL/SECAM/S-video, and digital video, e.g., MPEG-2 video in SDTV or HDTV format. The system has a reduced memory mode in which video images are reduced in half in horizontal direction only during decoding. The system is capable of receiving and processing digital audio signals such as MPEG Layer 1 and Layer 2 audio and Dolby AC-3 audio, as well as PCM audio signals. The system includes a memory controller. The system includes a system bridge controller to interface a CPU with devices internal to the system as well as peripheral devices including PCI devices and I/O devices such as RAM, ROM and flash memory devices. The system is capable of displaying video and graphics in both the high definition (HD) mode and the standard definition (SD) mode. The system may output an HDTV video while converting the HDTV video and providing as another output having an SDTV format or another HDTV format.

Video, audio and graphics decode, composite and display system

A video, audio and graphics system uses multiple transport processors to receive in-band and out-of-band MPEG Transport streams, to perform PID and section filtering as well as DVB and DES decryption and to de-multiplex them. The system processes the PES into digital audio, MPEG video and message data. The system is capable of decoding multiple MPEG SLICEs concurrently. Graphics windows are blended in parallel, and blended with video using alpha blending. During graphics processing, a single-port SRAM is used equivalently as a dual-port SRAM. The video may include both analog video, e.g., NTSC/PAL/SECAM/S-video, and digital video, e.g., MPEG-2 video in SDTV or HDTV format. The system has a reduced memory mode in which video images are reduced in half in horizontal direction only during decoding. The system is capable of receiving and processing digital audio signals such as MPEG Layer 1 and Layer 2 audio and Dolby AC-3 audio, as well as PCM audio signals. The system includes a memory controller. The system includes a system bridge controller to interface a CPU with devices internal to the system as well as peripheral devices including PCI devices and I/O devices such as RAM, ROM and flash memory devices. The system is capable of displaying video and graphics in both the high definition (HD) mode and the standard definition (SD) mode. The system may output an HDTV video while converting the HDTV video and providing as another output having an SDTV format or another HDTV format.

Digital tv receiver

내용 없음. No content.

Signal transmission apparatus, method therefor and signal receiving apparatus

본 발명에 따른 신호 전달 시스템은, 디지털 방송을 수신하여 1개의 휘도 신호 Y와 2개의 색차 신호 P B /P R 를 출력하는 MPEG 디코더(102)와, 상기 MPEG 디코더(102)로부터 출력되는 YP B P R 를 전송로에 있던 신호 형태로 부호화하여 송신하는 전송로 부호화 회로(103)를 구비하는 신호 송신 장치(101)와, 상기 부호화된 YP B P R 를 수신하여 복호화하는 전송로 복호화 회로(105)와, 상기 복호화된 휘도 신호 Y를 처리하는 Y 처리 회로(106)와, 상기 복호화된 각 색차 신호 P B /P R 를 처리하는 색 처리 회로(107)와, 상기 Y 처리 회로(106) 및 상기 색 처리 회로(107)로부터 출력된 YP B P R 를 RGB 신호로 변환하는 신호 변환 회로(108)와, RGB 신호를 표시하는 표시 장치(109)를 구비하는 신호 수신 장치(104)를 구비하도록 했다. The signal transmission system according to the present invention includes an MPEG decoder 102 for receiving digital broadcasting and outputting one luminance signal Y and two color difference signals P B / P R , and an YP B output from the MPEG decoder 102. A signal transmitting apparatus 101 including a transmission path encoding circuit 103 for encoding and transmitting P R in the form of a signal in a transmission path, and a transmission path decoding circuit 105 for receiving and decoding the encoded YP B P R. ), A Y processing circuit 106 for processing the decoded luminance signal Y, a color processing circuit 107 for processing each of the decoded color difference signals P B / P R , the Y processing circuit 106, and A signal conversion circuit 108 for converting YP B P R output from the color processing circuit 107 into an RGB signal, and a signal receiving device 104 having a display device 109 for displaying an RGB signal. did. 이와 같이 구성된 신호 전달 시스템에 의하면, 영상 신호의 송신측, 및 수신측의 하드웨어의 구성이 간단한 신호 전달 시스템을 실현할 수 있다. According to the signal transmission system configured as described above, it is possible to realize a signal transmission system having a simple configuration of hardware on the transmission side and the reception side of the video signal.

Frequency offset correcting system in orthogonal frequency division multiplex

PURPOSE: A frequency offset correcting system in orthogonal frequency division multiplex is provided to reduce frequency offset estimation time and complexity of calculation to correct the frequency offset, thereby improving the performance of an orthogonal frequency division multiplex transmission system. CONSTITUTION: A frequency offset correcting system in orthogonal frequency division multiplex includes an analog/digital converter(100), an FFT unit(300), a frequency offset estimator(400), a frequency offset corrector(200), and an equalizer(500). The analog/digital converter converts received analog data that is transformed into time domain through IFFT into digital data. The FFT unit transforms the digital data into frequency domain. The frequency offset estimator estimates frequency offset of the received data, caused by a difference between characteristics of tuners of transmitting and receiving terminals, and outputs the maximum value among estimated values to the frequency offset corrector. The frequency offset corrector corrects the frequency offset according to the value output from the frequency offset estimator. The equalizer compensates for the quantity of attenuation of the received data.

Storage tube type recorder/reproducer

화상 정보 복호 방법 및 장치

4 : 2 : 0 포맷의 비월 주사 화상을 입력 신호로 하는 화상 정보 복호 장치에 있어서, 색차 신호 위상 보정부는 동작 예측 보상 시에 입력 화상 블록의 색차 신호와 참조 화상 블록의 색차 신호의 위상을 일치시키도록, 동작 예측 모드 및 동작 벡터 정보의 수직 성분의 값에 따라, 참조 화상 블록 내의 색차 신호를 적응적으로 위상 시프트한다. 포맷, 비월 주사 화상, 색차 신호, 화상 블록, 위상.