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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 36. Отображено 36.
23-04-2015 дата публикации

DEPTH IMAGE ENCODING AND DECODING PROCESSING METHODS AND CORRESPONDING DEVICES

Номер: WO2015055146A1
Автор: YU, Lu, LV, Peng, LI, Ming, SHANG, Guoqiang
Принадлежит:

Disclosed are depth image encoding and decoding processing methods and corresponding devices, the encoding method comprising: determining a flag bit of an encoding method used during encoding of a depth image, the encoding method comprising: using a depth lookup table to encode the depth image in a depth lookup table sequence number field and/or directly encoding the depth image in a depth value field; writing the flag bit into one of the following positions in a code stream: a video parameter set correspondingly referred to by the depth image, a sequence parameter set correspondingly referred to by the depth image, an image parameter set correspondingly referred to by the depth image, and a slice header corresponding to the depth image. The present invention solves problems in the prior art of large overhead caused by transmitting a flag bit within each block, and less efficient encoding and decoding. Flag bit transmission overhead is thus reduced, and depth image encoding and decoding ...

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Номер записи: 1
06-08-2020 дата публикации

BITSTREAM CHECKING AND DECODING METHOD, AND DEVICE THEREOF

Номер: WO2020156175A1
Автор: YU, Hualong, YU, Lu, GAO, Xiaoding, YUAN, Qichao
Принадлежит:

Disclosed in the present invention is a bitstream checking method, comprising: performing, at a coding end, different operations on coding image data of a splicing bitstream comprising a knowledge bitstream and a primary bitstream in an assumed bitstream cache, so as to stimulate the filling degree of the data in the bitstream cache to check whether an overflow of the assumed bitstream cache or an underflow of the assumed bitstream cache occurs in the filling degree of the data in the assumed bitstream cache, thereby checking the qualification of the bitstream. The purpose thereof is to determine whether the bitstream generated by a decoder is qualified. A corresponding bitstream operation mechanism is used at the decoding end; appropriate decoding is performed on a knowledge image interspersed in the splicing bitstream; however, an effect that no overflow or underflow of the bitstream cache with limited capability occurs is ensured, and the decoder can decode and display images in a mainstream ...

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Номер записи: 2
29-07-2010 дата публикации

ENCODING/DECODING METHOD AND DEVICE BASED ON DOUBLE PREDICTION

Номер: WO2010083743A1
Автор: YU, Lou, LI, Shangwen, WANG, Jianpeng, XIONG, Lianhuan, LIN, Sixin
Принадлежит:

Disclosed in the embodiments of the present invention are an encoding/decoding method and device based on double prediction, which include: after double prediction parameter information in a double prediction process is obtained, said double prediction parameter information is encoded according to a pre-established probability model, and an encoding result is written into an encoded code stream. Conversely, on the decoding side, after the encoded code stream corresponding to the double prediction parameter information in the double prediction process is obtained, the encoded code stream corresponding to the double prediction parameter information is decoded according to a pre-established probability model and said double prediction parameter information is obtained. Embodiments of the present invention perform encoding/decoding operations based on established corresponding probability models, thus effectively improving the ability to encode the double prediction parameter information in ...

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Номер записи: 3
29-07-2010 дата публикации

METHOD AND DEVICE FOR PROCESSING DEPTH IMAGE SEQUENCE

Номер: WO2010083750A1
Автор: XIONG, Lianhuan, YU, Lou
Принадлежит:

A method and device for processing depth image sequence are provided by the embodiment of the present invention. The method includes: analyzing the images of m frames before the current time, n frame at the current time and q frames after the current time within the texture sequence corresponding to the depth sequence images, and extracting characteristics of the texture sequence; processing the depth image of the current frame according to the characteristics of the texture sequence, in combination with r frames before the current time and s frames after the current time within the depth sequence, thus enabling the enhancement of time domain continuity of the depth image sequence. The embodiment of the present invention can reasonably utilize the correlation between the texture sequence and the depth sequence as well as the time correlation of the texture sequence to improve the correlation of the depth sequence. Thus the embodiment of the present invention can enhance the quality of the ...

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Номер записи: 4
31-10-2013 дата публикации

METHOD AND DEVICE FOR DECODING AND ENCODING AUXILIARY INFORMATION OF THREE-DIMENSIONAL VIDEO SEQUENCE

Номер: WO2013159702A1
Автор: ZHAO, Yin, YU, Lu, HONG, Yingjie, LI, Ming
Принадлежит:

Disclosed are a method and device for decoding and encoding auxiliary information of a three-dimensional video sequence. The method comprises: obtaining auxiliary information for constructing a stereos pair from a three-dimensional video sequence bitstream, the auxiliary information being used for indicating that the stereos pair is constructed by a reconstructed three-dimensional video sequence, and the reconstructed three-dimensional video sequence being a result obtained after the three-dimensional video sequence bitstream is decoded. The present invention solves the technical problem in the prior art that the display effect of a constructed stereos pair is poor because auxiliary information is not carried in a three-dimensional video sequence bitstream, and achieves the technical effect of improving the display effect of a constructed stereoscopic video.

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Номер записи: 5
25-01-2018 дата публикации

METHOD AND DEVICE FOR PROCESSING VIDEO DATA

Номер: WO2018014546A1
Автор: YU, Lu, YU, Hualong, ZHAO, Yin, YANG, Haitao
Принадлежит:

Embodiments of the present invention disclose a method and device for processing video data. The method comprises: a server acquiring segment information of each sequence layer segment of all sequence layer segments in a bitstream; determining N sequence layer segments and a first target knowledge layer segment according to the segment information of the each sequence layer segment; acquiring segment information of the first target knowledge layer segment; adding, according to the segment information of the first target knowledge layer segment and the segment information of the N sequence layer segments, expansion time period information of the first target knowledge layer segment to a media presentation description (MPD) of the bitstream; and transmitting the MPD of the bitstream to a client. By adopting the embodiments of the present invention, advantages of preventing repeated transmission of video data, saving data transmission bandwidth and enhancing adaptability of video data processing ...

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Номер записи: 6
05-03-2020 дата публикации

METHODS AND DEVICES FOR PROCESSING AND TRANSMITTING MEDIA DATA AND FOR SPECIFYING REFERENCE IMAGE

Номер: WO2020043003A1
Автор: YU, Lu, YU, Hualong, YUAN, Qichao, LIN, Xiangyu
Принадлежит:

Disclosed are multiple methods and multiple devices for processing produced media data, transmitting media data, processing media data, processing a reference image request and specifying a reference image. By means of the method for processing produced media data, the method for transmitting media data, and the method for processing media data, the synchronous and correct processing and transmission of code streams are ensured on the basis of dependent index relations between video layer code stream data and knowledge layer code stream data, and correct data is highly efficiently provided to a decoder. By means of the method for processing a reference image request and specifying a reference image, a current image is provided with a knowledge image set that needs to be displayed and not belonging to a random access fragment to which the current image belongs and to the previously most adjacent random access fragment, the correct decoding of the current image is ensured and repeated downloading ...

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Номер записи: 7
14-04-2022 дата публикации

FEATURE DATA ENCODING METHOD, APPARATUS AND DEVICE, FEATURE DATA DECODING METHOD, APPARATUS AND DEVICE, AND STORAGE MEDIUM

Номер: WO2022073159A1
Автор: YU, Lu, SHAO, Yuchao, YU, Hualong, XIE, Zhihuang, DAI, Zhenyu
Принадлежит:

A feature data encoding method, apparatus and device, a feature data decoding method, apparatus and device, and a storage medium. The feature data encoding method comprises: determining first feature data corresponding to each channel to be encoded; performing data type conversion processing on target information first feature data corresponding to each channel, so as to obtain second feature data that satisfies a data input condition of a feature data encoding apparatus; performing spatial-domain re-expression on target information second feature data corresponding to each channel so as to obtain third feature data, wherein the height of target information third feature data conforms to a first height, the width of the target information third feature data conforms to a first width, and the target information third feature data comprises the target information second feature data located at a target position of each channel; and performing encoding on the basis of the target information ...

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Номер записи: 8
16-06-2011 дата публикации

VIDEO ENCODING METHOD, DECODING METHOD, ENCODING AND DECODING DEVICE

Номер: WO2011069412A1
Автор: YU, Lu, YU, Binbin, LI, Shangwen, WANG, Dong, YANG, Mingyuan, XIONG, Lianhuan
Принадлежит:

The present invention discloses a video encoding method, decoding method, encoding and decoding device. The encoding method comprises the following features: a dual prediction flag is generated for the block to be encoded; when said block to be encoded requires a dual prediction, a dual prediction flag is generated for at least one sub-block of said block to be encoded, wherein the dual prediction flag of said sub-block is used to indicate whether the sub-block performs the dual prediction; the prediction is performed according to the dual prediction flag of said block to be encoded and the dual prediction flag of at least one sub-block of said block to be encoded, and a predicted image is obtained; according to said predicted image, a predicted residual error is obtained, and said predicted residual error is encoded. By refining the dual prediction unit of the dual prediction flag to a sub-block level, the encoding efficiency is improved.

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Номер записи: 9
09-01-2020 дата публикации

PANORAMIC IMAGE FILTERING METHOD AND DEVICE

Номер: WO2020007094A1
Автор: YU, Lu, HUANGFU, Xuchang
Принадлежит:

Disclosed in the present invention are a panoramic image filtering method and device. According to format information of a panoramic projection expanded image, positions of a pair of planar boundary regions that exist in the panoramic projection expanded image and that are adjacent on a panoramic spherical surface but not adjacent on the projection expanded image are determined; according to the direction of a specific planar boundary region among the pair of planar boundary regions on the panoramic projection expanded image, the directions of first-dimensional and second-dimensional filtering processing in the pair of planar boundary regions are determined, first-dimensional and second-dimensional filtering processing being performed in sequence on the pair of planar boundary regions; the method for determining the directions of first-dimensional and second-dimensional filtering processing for the pair of planar boundary regions is different from determining the directions of first-dimensional ...

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Номер записи: 10
21-07-2023 дата публикации

Coding and decoding method and device of feature data, equipment and storage medium

Номер: CN116472708A
Автор: YU LU, SHAO YUCHAO, YU HUALONG, XIE ZHIHUANG, DAI ZHENYU
Принадлежит:

A feature data encoding and decoding method, device, equipment and storage medium wherein the feature data processing method comprises: determining first feature data corresponding to each channel to be encoded; performing data type conversion processing on the first feature data of the target information corresponding to each channel to obtain second feature data meeting a data input condition of the encoding device of the feature data; performing spatial domain re-expression on the second feature data of the target information corresponding to each channel to obtain third feature data; wherein the height of the target information third feature data accords with the first height, the width of the target information third feature data accords with the first width, and the target information third feature data comprises target information second feature data located at the target position of each channel; and coding based on the target information third feature data, and writing into a code ...

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Номер записи: 11
17-12-2015 дата публикации

CANDIDATE MODE QUEUE PROCESSING METHOD AND DEVICE

Номер: WO2015188613A1
Автор: YU, Lu, ZHANG, Yichen
Принадлежит:

Disclosed are a candidate mode queue processing method and device thereof. The processing method comprises: selecting an adjacent image block from adjacent image blocks of a current image block and only conducting selection once, and inserting an encoding mode, i.e. a viewpoint synthesis prediction mode, of the selected adjacent image block into a candidate mode queue. The present invention solves the problem in the prior art that the encoding complexity is relatively high when a plurality of redundant viewpoint synthesis prediction candidate modes appear in the candidate mode queue at the same time.

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Номер записи: 12
05-07-2018 дата публикации

IMAGE ENCODING/DECODING METHOD AND DEVICE

Номер: WO2018121432A1
Автор: ZHAO, Yin, DI, Peiyun, YU, Lu
Принадлежит:

Provided are an image encoding/decoding method and device. With regard to an image to be encoded in a video sequence to be encoded, a reference image can be selected from at least one knowledge base image in a knowledge base image set; regarding the fact that a reference image can only be selected for an image to be encoded from a random access fragment where same is located, adding the number of reference images to which the image to be encoded can refer, namely, extending a candidate range of a reference image of an image to be encoded to a certain extent, thereby facilitating the improvement of the image encoding efficiency to a certain extent; and code stream data of an image to be encoded comprises identification information for identifying a reference image of the image to be encoded, and therefore, even though the reference image is encoded to be a random access image based on encoding in a full intra-frame mode or inter-frame encoding, after a decoding end receives code stream data ...

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Номер записи: 13
06-10-2016 дата публикации

IMAGE CODING/DECODING METHOD AND RELEVANT APPARATUS

Номер: WO2016155576A1
Автор: YU, Lu, ZUO, Xuguang, ZHAO, Yin, YANG, Haitao
Принадлежит:

An image coding/decoding method and a relevant apparatus. The image coding method comprises: acquiring a current image; selecting K reference images of the current image from a knowledge base, wherein at least one image in the knowledge base does not belong to the random access segment where the current image is located, and K is an integer greater than or equal to 1; and decoding the current image according to the K reference images. The technical solution provided by the embodiments is beneficial to improving the video coding/decoding efficiency.

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Номер записи: 14
06-08-2020 дата публикации

VIDEO DECODING METHOD AND APPARATUS, VIDEO ENCODING METHOD AND APPARATUS, AND DEVICE AND STORAGE MEDIUM

Номер: WO2020156054A1
Автор: YUAN, Qichao, YU, Lu, YU, Hualong, LIN, Xiangyu, YANG, Haitao, ZHAO, Yin
Принадлежит:

Disclosed are a video decoding method and apparatus, a video encoding method and apparatus, and a device and a storage medium. The video decoding method comprises: obtaining a main bit stream to be decoded, the main bit stream comprising data for decoding a main bit stream image; analyzing reference relationship information in target information from the data for decoding the main bit stream image, the reference relationship information being used for indicating the reference relationship between the main bit stream image and a knowledge bit stream image, and the target information comprising supplementary enhancement information or extended data; and obtaining a target knowledge bit stream image according to the reference relationship information, the target knowledge bit stream image being used for decoding the bit stream image. According to the present application the target information of the main bit stream carries the reference relationship information between the main bit stream ...

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Номер записи: 15
16-07-2020 дата публикации

VIDEO IMAGE DECODING METHOD AND APPARATUS, AND VIDEO IMAGE ENCODING METHOD AND APPARATUS

Номер: WO2020143589A1
Автор: WANG, Ye-Kui, YU, Lu, FAN, Yuqun, YU, Hualong, YUAN, Qichao, ZHAO, Yin, YANG, Haitao
Принадлежит:

Provided are a video image decoding method and apparatus and a video image encoding method and apparatus. When it is determined that inter-frame prediction is performed on the current image to be processed with reference to a knowledge base image, a first identifier is programmed into a code stream, wherein the first identifier is used for indicating whether a reconstructed pixel value of the current image to be processed copies a pixel value of the knowledge base image referred to; and where the reconstructed pixel value of the current image to be processed copies the pixel value of the knowledge base image, it is no longer necessary to use the knowledge base image to perform video encoding and decoding (e.g. motion compensation) on the current image to be processed; therefore, for the case where a video image in a main code stream and a reference image in a knowledge base code stream have the same or approximately the same (e.g. similar) pixel values, encoding and decoding redundancy ...

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Номер записи: 16
10-10-2019 дата публикации

METHOD AND DEVICE FOR PROCESSING PANORAMIC IMAGE

Номер: WO2019192377A1
Автор: YU, Lu, HUANGFU, Xuchang
Принадлежит:

Disclosed are a method and device for processing a panoramic image. Format information is extracted from a code stream; and a location in a decoded panoramic image is mapped to a location on a spherical surface by using a special mapping relationship according to the format information, wherein the decoded panoramic image at least comprises one area that satisfies the special mapping relationship. By means of the present invention, areas in a decoded panoramic image can be distributed more uniformly with respect to a spherical surface, so that the expression efficiency is improved, and the transformation distortion is reduced. In the present invention, a method for processing a panoramic image is designed, and a corresponding device is also designed.

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Номер записи: 17
31-10-2013 дата публикации

ENCODING/DECODING METHOD, VIDEO SEQUENCE STREAM ENCODING/DECODING METHOD, AND DEVICE CORRESPONDING THERETO

Номер: WO2013159705A1
Автор: YU, Lu, LV, Peng, ZHAO, Yin, HONG, Yingjie, LI, Ming
Принадлежит:

Disclosed are an encoding/decoding method, a video sequence stream encoding/decoding method, and a device corresponding thereto. The decoding method comprises: receiving a slice stream where the slice stream carries therein parameter set indication information used for indicating a camera parameter set; acquiring a camera parameter from the camera parameter set indicated by the parameter set indication information; and, decoding the slice stream on the basis of the camera parameter acquired. The present invention solves the technical problem in the prior art of reduced encoding/decoding efficiency due to the need that the camera parameter must be carried in the slice stream for normal completion of a encoding/decoding process, thus achieving the technical effect of increased encoding/decoding efficiency.

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Номер записи: 18
31-10-2013 дата публикации

METHOD AND DEVICE FOR GENERATING STEREOSCOPIC VIDEO PAIR

Номер: WO2013159568A1
Автор: YU, Lu, ZHAO, Yin
Принадлежит:

The present invention is applicable in the field of multimedia communications. Disclosed is a method for generating a stereoscopic video pair. A three-dimensional video sequence is processed from supplementary display information to acquire the stereoscopic video pair. The stereoscopic video pair is displayed on a stereoscopic display device (D1). The supplementary display information comprises camera view position information, virtual view position information, and display-side scaling factor (S1). The camera view position information indicates the position of one camera view (C) in the three-dimensional video sequence. The virtual view position information indicates the position of one virtual view (P1). The display-side scaling factor (S1) is the ratio between the horizontal resolution (Res1) and the horizontal width (W1) of the stereoscopic display device (D1). Also disclosed is a device for generating the stereoscopic video pair. The present invention improves ultimate visual experience ...

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Номер записи: 19
14-04-2022 дата публикации

ENCODING METHOD, DECODING METHOD, ENCODER, DECODER, AND STORAGE MEDIUM

Номер: WO2022073160A1
Автор: YU, Lu, ZHU, Bingjie, YU, Hualong, XIE, Zhihuang, DAI, Zhenyu
Принадлежит:

An encoding method, a decoding method, an encoder, a decoder, and a storage medium. The encoding method comprises: determining input feature map data (S201); performing relevant processing on the input feature map data to obtain a plurality of feature sub-maps (S202); re-ordering the plurality of feature sub-maps to obtain a class time domain sequence and corresponding re-ordering information (S203); and encoding the class time domain sequence and the re-ordering information to generate a code stream (204). Thus, the plurality of feature sub-maps are re-ordered, thereby fully utilising information of correlations between the feature sub-maps, such that the encoding and decoding efficiencies of the feature map data can be improved.

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Номер записи: 20
16-07-2020 дата публикации

VIDEO ENCODER, VIDEO DECODER, AND CORRESPONDING METHOD

Номер: WO2020143585A1
Автор: YU, Lu, WANG, Ye-Kui, FAN, Yuqun, YU, Hualong, ZHAO, Yin, LIN, Xiangyu, YANG, Haitao
Принадлежит:

The present application discloses a decoding method and device for reducing a decoding peak value. The method comprises: acquiring a first identifier from a code stream, wherein the first identifier indicates a minimum decoding time interval k between knowledge images allowed by the code stream; if the knowledge images are to be referred to during decoding of a current image to be decoded, acquiring, when decoding the code stream, a decoding time ti of the current image, and a decoding time tj of a first decoded image at which a new knowledge image was most recently referred to, wherein the new knowledge image is a knowledge image which has not been decoded during decoding of the first decoded image or which requires re-decoding; and determining, according to a size relationship between k and the difference between ti and tj, a predetermined number of knowledge images as candidate reference images of the current image. The present application increases prediction accuracy in encoding and ...

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Номер записи: 21
16-11-2017 дата публикации

METHOD AND DEVICE FOR EVALUATING QUALITY OF DIGITAL IMAGE

Номер: WO2017193875A1
Автор: YU, Lu, SUN, Yule, LU, Ang
Принадлежит:

A method and device for evaluating the quality of a digital image, applied to the field of communications. The method is used for dealing with a situation where an expression space and an observation space of a digital image are different. The method for evaluating the quality of a digital image is to calculate, in a space to be evaluated, the objective quality of the digital image reflected in the observation space. The device for evaluating the quality of a digital image comprises a distortion value generation module, a distortion value processing module, and a digital image quality evaluation module. The method may provide, for the digital image in the space to be evaluated, a method for accurately and quickly calculating the objective quality in the observation space. The application of the method to a digital image or digital sequence can provide an accurate bit-rate allocation solution for compressed encoding, and the application of the method to a digital image or digital video encoding ...

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Номер записи: 22
15-08-2019 дата публикации

BIDIRECTIONAL INTERFRAME PREDICTION METHOD AND APPARATUS

Номер: WO2019153861A1
Автор: MAO, Jue, YU, Lu, ZHAO, Yin, YANG, Haitao
Принадлежит:

Embodiments of the present application relate to the technical field of video image encoding and decoding, and provide a bidirectional interframe prediction method and apparatus. According to the present application, a weight value of bidirectional weighted prediction can be adaptively determined, and the prediction performance of the bidirectional weighted prediction can be improved. The method comprises: determining a first reference image block and a second reference image block according to bidirectional motion information of a current image block; obtaining a current template, a first reference template, and a second reference template; calculating a first difference value between the current template and the first reference template, and a second difference value between the current template and the second reference template; determining a difference for characterizing the difference degree between the first difference value and the second difference value, and determining weight ...

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Номер записи: 23
28-04-2011 дата публикации

VIDEO AND IMAGE ENCODING/DECODING SYSTEM BASED ON SPATIAL DOMAIN PREDICTION

Номер: WO2011047542A1
Автор: YU, Lu, CHEN, Yu
Принадлежит:

A video and image encoding system based on spatial domain prediction is provided. The system uses at least one spatial domain prediction mode to perform prediction encoding, wherein at least one spatial domain prediction mode applies a prediction filter, which is based on one or more reference pixels, on at least one pixel in a to-be-encoded region to generate a prediction value. Further, at least one spatial domain prediction mode has one of the following characteristics or a combination thereof: by minimizing or maximizing an optimization object in a special image region, the spatial domain prediction mode self-adaptively computes a spatial domain prediction filter according to the encoded content, and generates the prediction value of an to-be-predicted region by using the prediction filter; the information of at least one prediction filter, which is used by the spatial domain prediction mode, is encoded and written in a code stream. The encoding/decoding system in the present invention ...

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Номер записи: 24
12-11-2015 дата публикации

VISUAL SPECIAL EFFECT IMAGE OR VIDEO PAIR AND GENERATION METHOD AND DEVICE THEREFOR

Номер: WO2015169101A1
Автор: YU, Lu, HONG, Wenhao
Принадлежит:

Disclosed are a generation method and device for a visual special effect image or video pair. The method mainly comprises: at least modifying the brightness of at least one region of an image or video of at least one viewpoint, so that the polarity of a brightness contrast of the region in the viewpoint to perimeter regions is opposite to the polarity of a brightness contrast of a corresponding region in the other viewpoint to the perimeter, and the absolute value of the difference between the brightness contrast of the region in the viewpoint to the perimeter regions and the contrast of a brightness corresponding region in the other viewpoint to the perimeter is greater than a critical value; and obtaining a new image or video pair. When the obtained image or video is viewed using both eyes, a changing lustre sensation appears in a processing region. The present invention can add a special visual effect for content viewed in a binocular display mode.

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Номер записи: 25
09-07-2020 дата публикации

VIDEO ENCODING AND DECODING METHOD AND DEVICE

Номер: WO2020140863A1
Автор: YU, Lu, GAO, Xiaoding, YU, Hualong
Принадлежит:

Disclosed in the present invention are a method and device for video encoding and a method and device for video decoding. By means of effectively storing and managing a short-term reference image referenced by a currently encoded or decoded image and a knowledge image provided by the outside, the sum of the knowledge image and the short-term reference image is prevented from exceeding the size of a decoded image cache so as to ensure the availability of the reference image and the correctness of encoding or decoding. At the same time, the frequent movement in and movement out of the knowledge image is avoided so as to reduce the additional decoding capacity load for encoders or decoders caused by the knowledge image, and reduce the movement load of an encoding device or decoding device and external data brought by the knowledge image so as to ensure that the decoding device decodes a code stream in real time.

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Номер записи: 26
17-10-2019 дата публикации

INFORMATION MAINTAINING ENCODING AND DECODING METHOD AND DEVICE

Номер: WO2019196956A1
Автор: YU, Lu, HE, Zhichu
Принадлежит:

The present invention provides an information maintaining encoding method based on sample value probability distribution. The value probability distribution of a sample indicates evaluation of the probability of different values for a sample. The provided information maintaining encoding method more meets the non-stationary characteristic of the actual information source probability, and the code length is the overhead caused by an estimation error of the sample value probability distribution. The present invention further provides multiple encoding methods based on sample value probability distribution. The encoding efficiency is significantly improved by improving the estimation accuracy of the sample value probability distribution.

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Номер записи: 27
20-12-2018 дата публикации

METHOD AND DEVICE FOR MOTION VECTOR PREDICTION

Номер: WO2018228016A1
Автор: MAO, Jue, YU, Lu, ZHAO, Yin
Принадлежит:

Disclosed in the embodiments of the present application are a method and a device for motion vector prediction, being used for determining a motion vector predictor of the current block and improving the prediction efficiency of motion vectors. The method in the embodiments of the present application comprises: acquiring a reference frame corresponding to a motion vector of the current block; according to the reference frame type of the reference frame, determining the motion vector type of the motion vector of the current block; if at least one spatial adjacent prediction block of the current block is an inter-frame prediction block, acquiring the motion vector type of a first motion vector of the at least one spatial adjacent prediction block; if the acquired motion vector type of the first motion vector and the type of the motion vector of the current block are different, determining, according to decoding information concerning a spatial adjacent pixel block of the current block, a ...

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Номер записи: 28
16-07-2020 дата публикации

VIDEO DECODING METHOD, VIDEO ENCODING METHOD, APPARATUS, DEVICE, AND STORAGE MEDIUM

Номер: WO2020143594A1
Автор: YU, Lu, WANG, Ye-Kui, YU, Hualong, ZHAO, Yin, FAN, Yuqun, GAO, Xiaoding, YANG, Haitao
Принадлежит:

The present application discloses a video encoding method, a video decoding method, an apparatus, a device, and a storage medium. Said method comprises: in the case where a knowledge image corresponding to a reference knowledge image code stream is allowed to decode a video code stream, parsing a first identifier from the video code stream; and in the case where the value of the first identifier is a first value, taking the value of a target parameter of the video code stream as the value of a target parameter of a knowledge image stream to which the video code stream refers; and according to the value of the target parameter of the knowledge image code stream to which the video code stream refers and the knowledge image code stream to which the video code stream refers, reconstructing a knowledge image corresponding to the knowledge image code stream to which the video code stream refers. The technical solution provided in the present application is flexible in decoding, achieving high ...

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Номер записи: 29
03-04-2014 дата публикации

PREDICTION IMAGE GENERATION METHOD AND DEVICE

Номер: WO2014048242A1
Автор: YU, Lu, ZHANG, Yichen, ZHAO, Yin, HONG, Yingjie, LI, Ming
Принадлежит:

Disclosed are a prediction image generation method and device, the method comprising: determining a reference rectangular pixel block according to parameter information which includes the location of a target rectangular pixel block and/or the depth information of a reference viewpoint; mapping the reference rectangular pixel block to a target viewpoint with the depth information of the reference viewpoint to obtain a projection rectangular pixel block; and acquiring a prediction image block from the projection rectangular pixel block. The present invention solves the technical problem of greatly depending on the data due to the combined use of the depth image of the target viewpoint and the depth image of the reference viewpoint during the prediction image generation process in the prior art, and achieves the technical effects of reducing the dependence of the data and improving the encoding and decoding efficiency.

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Номер записи: 30
29-08-2023 дата публикации

Point cloud attribute coding and decoding method and device

Номер: CN116671109A
Автор: YU LU, CHEN JIAFENG, WANG WENYI
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The invention provides a point cloud attribute decoding method and device based on a new processing sequence in order to further improve the coding efficiency of point cloud attributes and overcome the defect that a three-dimensional space distance in front of adjacent points in a Morton sequence jumps periodically in order to improve the coding efficiency of the point cloud attributes. A Hilbert sequence is used as a coding sequence of point cloud attributes, neighbor points of a current waiting point in a three-dimensional space are searched in a plurality of points of a front sequence of the current waiting point under the Hilbert sequence, and the neighbor points are used as prediction points of the current waiting point. Due to the fact that close points in a Hilbert sequence are close in a three-dimensional space, particularly, under the worst condition, the distance between two points with the distance being n in the Hilbert sequence in the three-dimensional space is smaller than ...

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Номер записи: 31
01-08-2023 дата публикации

Image weighted quantization processing method and device, computer equipment and storage medium

Номер: CN116527902A
Автор: YU LU, CHENG QINGSU, ZHANG JIAQI
Принадлежит:

The invention discloses an image weighted quantization processing method and device, which are used in the technical field of multimedia compression and can further improve the compression ratio of an image on the premise of ensuring the image quality. The method comprises the following steps: acquiring a frequency domain expression of a reference block of a to-be-processed block in an image; according to the information of the target frequency component of the block to be processed and the information of the frequency domain expression of the reference block, determining the sensing threshold of the target frequency component, the information of the target frequency component at least comprising the frequency of the target frequency component; the sensing threshold of the target frequency component at least comprises a threshold single-frequency sensing sensitivity threshold of the target frequency component and/or an inter-frequency masking threshold of the target frequency component; ...

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Номер записи: 32
29-08-2023 дата публикации

Method and system for processing video stream with layer information

Номер: CN116670715A
Автор: YU LU, WANG CHUCHU, LI SICHENG, XIE ZHIHUANG, DAI ZHENYU
Принадлежит:

The present invention is directed to video processing techniques. A particular embodiment provides a video processing method. A frame of a video stream including a metadata portion and a video data portion is processed. The metadata portion includes a viewpoint list portion and a tile list portion. And generating a layer list at least based on the layer tile association information. The layer list includes a parameter indicating an association between the layer and the viewpoint. The tile list portion includes a parameter indicating an association between the layer and the tile. In the rendering process, at least the layer list parameters and the tile list parameters are used to select tiles of the target viewpoint. Other embodiments are also provided.

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Номер записи: 33
25-08-2023 дата публикации

Image quality evaluation method and device

Номер: CN116645311A
Автор: YU LU, CHENG QINGSU, ZHANG ZHIHAO, SUN YULE, ZHAO YIN, YANG HAITAO
Принадлежит:

The invention discloses an image quality evaluation method and device, relates to the technical field of media, and can improve the consistency of an image objective quality evaluation result and an image quality evaluation result obtained through subjective perception. The method comprises the following steps: firstly, obtaining a first frequency domain expression; a masking threshold for a target frequency component of the reference image is then determined from the first frequency domain expression. A second frequency domain expression is then obtained. A target distortion is then determined from the first frequency domain expression, the second frequency domain expression, and a masking threshold. And finally, determining the quality score of the detected image according to the target distortion. Wherein the first frequency domain expression is the frequency domain expression of the reference image. The second frequency domain expression is the frequency domain expression of the detected ...

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Номер записи: 34
25-08-2023 дата публикации

Quantization processing method and device

Номер: CN116647683A
Автор: YU LU, CHENG QINGSU, ZHANG ZHIHAO, SUN YULE, ZHAO YIN, YANG HAITAO
Принадлежит:

The invention discloses a quantization processing method and device, relates to the technical field of media, and can ensure the video quality and improve the video compression ratio. The method comprises the following steps: firstly, obtaining a first frequency domain expression; and then determining a masking threshold of a target frequency component of a prediction block of the block to be coded according to the first frequency domain expression. And then determining a quantization step size according to the masking threshold value. And carrying out weighted quantization on the residual block of the to-be-coded block according to the obtained quantization step size. Wherein the first frequency domain expression is the frequency domain expression of the prediction block of the to-be-coded block.

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Номер записи: 35
30-06-2023 дата публикации

Encoding method, decoding method, encoder, decoder, and storage medium

Номер: CN116368798A
Автор: YU LU, ZHU BINGJIE, YU HUALONG, XIE ZHIHUANG, DAI ZHENYU
Принадлежит:

An encoding method, a decoding method, an encoder, a decoder and a storage medium. The method comprises: determining input feature map data (S201); performing related processing on the input feature map data to obtain a plurality of feature sub-maps (S202); performing reordering processing on the plurality of feature sub-graphs to obtain a class time domain sequence and corresponding reordering information (S203); and encoding the time domain-like sequence and the reordering information to generate a code stream (S204). Therefore, the plurality of feature sub-graphs are reordered, and the correlation information among the feature sub-graphs is fully utilized, so that the coding and decoding efficiency of the feature graph data can be improved.

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Номер записи: 36