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公开(公告)号：US11765398B2
公开(公告)日：2023-09-19
申请号：US17128965
申请日：2020-12-21
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Hsiao Chiang Chuang , Yue Wang
IPC: H04N19/96 , H04N19/119 , H04N19/13 , H04N19/132 , H04N19/176 , H04N19/513 , H04N19/186
CPC classification number: H04N19/96 , H04N19/119 , H04N19/13 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/513
Abstract: Devices, systems and methods for picture border coding are described. In a representative aspect, a method for processing picture includes segmenting a picture into one or multiple picture segments, determining that a first block of a picture segment covers at least one region that is outside a border of the picture segment, wherein a size of the first block is M×N pixels, selecting a second block of size K×L pixels, where (K≤M and L
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公开(公告)号：US11765358B2
公开(公告)日：2023-09-19
申请号：US17977630
申请日：2022-10-31
Inventor： Yang Wang , Li Zhang , Zhipin Deng , Kai Zhang , Hongbin Liu
IPC: H04N19/119 , H04N19/70 , H04N19/176
CPC classification number: H04N19/119 , H04N19/176 , H04N19/70
Abstract: Systems, methods and apparatus for video processing are described. The video processing may include video encoding, video decoding or video transcoding. One example method of video processing includes performing a conversion between a current block of a video and a bitstream of the video according to a rule. The rule specifies that selection of a context for coding a syntax element specifying whether the block is split horizontally or vertically is based on a number of allowed vertical splits and a number of allowed horizontal splits. The number of allowed vertical splits includes a number of allowed binary vertical splits and a number of allowed ternary vertical splits, and the number of allowed horizontal splits includes a number of allowed binary horizontal splits and a number of allowed ternary horizontal splits.
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公开(公告)号：US11765352B2
公开(公告)日：2023-09-19
申请号：US17835647
申请日：2022-06-08
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Ye-kui Wang
IPC: H04N19/176 , H04N19/70 , H04N19/117 , H04N19/174 , H04N19/186 , H04N19/80
CPC classification number: H04N19/117 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/80
Abstract: An example method of video processing includes applying, in a conversion between a video comprising multiple components and a bitstream representation of the video, a deblocking filter to video blocks of the multiple components. A deblocking filter strength for the deblocking filter of each of the multiple components is determined according to a rule that specifies to use a different manner for determining the deblocking filter strength for the video blocks of each of the multiple components.
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公开(公告)号：US20230291930A1
公开(公告)日：2023-09-14
申请号：US18301846
申请日：2023-04-17
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/593 , H04N19/11 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/186
CPC classification number: H04N19/593 , H04N19/11 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/186
Abstract: A method of video processing is described. The method includes: determining, based on a coding mode of a current video block of a video, whether a position dependent intra prediction combination (PDPC) method is used for coding the current video block based on a first rule, and performing a conversion between the current video block and a coded representation of the video according to the determining, wherein the PDPC method combines neighboring samples with a prediction signal of the current video block to generate a refined prediction signal of the current video block.
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公开(公告)号：US11758143B2
公开(公告)日：2023-09-12
申请号：US17717515
申请日：2022-04-11
Inventor： Zhipin Deng , Li Zhang , Hongbin Liu , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/186 , H04N19/70 , H04N19/137 , H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/80
CPC classification number: H04N19/137 , H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/80
Abstract: A method of video processing is described. The method includes performing a conversion between a current video block of a video and a bitstream representation of the video, wherein, during the conversion, a prediction of the current video block is determined as a weighted sum of two or more predictions of the current video block, and a motion vector storing process for the current video block is determined according to a rule, wherein the current video block uses a partitioning prediction mode that is a first mode which is based on multiple first partitioning schemes or a second mode which is based on multiple second partitioning schemes, and wherein the rule specifies that a process used for determining which motion vector and how many motion vectors are stored is same for the first mode or the second mode.
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Patent Agency Ranking
公开(公告)号：US11743506B1
公开(公告)日：2023-08-29
申请号：US17962882
申请日：2022-10-10
Inventor： Zhipin Deng , Li Zhang , Ye-kui Wang , Kai Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/184
CPC classification number: H04N19/70 , H04N19/184
Abstract: Systems, methods and apparatus for video processing are described. The video processing may include video encoding, video decoding or video transcoding. One example method of video processing includes A method of video processing, including: performing a conversion between a video region of a video and a bitstream of the video according to a format rule, and wherein the format rule specifies that an applicability of a deblocking filter for the video region is determined based on syntax elements at i) a picture parameter set level and ii) a picture level or a slice level.
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公开(公告)号：US11743454B2
公开(公告)日：2023-08-29
申请号：US17699021
申请日：2022-03-18
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/186 , H04N19/176 , H04N19/70
CPC classification number: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
Abstract: An example method of video processing includes determining, for a conversion between a current picture of a video and a coded representation of the video, a position of a reference sample in a reference picture that is associated with the current picture based on a top-left position of a window of a picture. The picture includes at least the current picture or the reference picture, and the window is subject to a processing rule during the conversion. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20230269379A1
公开(公告)日：2023-08-24
申请号：US18310344
申请日：2023-05-01
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/149 , H04N19/105 , H04N19/11 , H04N19/132 , H04N19/159 , H04N19/70 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/50 , H04N19/593 , H04N19/176
CPC classification number: H04N19/149 , H04N19/105 , H04N19/11 , H04N19/132 , H04N19/159 , H04N19/70 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/50 , H04N19/593 , H04N19/176
Abstract: A method for video processing is provided. The method includes determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, multiple sets of parameters, wherein each set of parameters defines a cross-component linear model (CCLM) and is derived from a corresponding group of chroma samples at corresponding chroma sample positions; determining, based on the multiple sets of parameters, parameters for a final CCLM; and performing the conversion based on the final CCLM.
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公开(公告)号：US11736697B2
公开(公告)日：2023-08-22
申请号：US17732692
申请日：2022-04-29
Inventor： Li Zhang , Weijia Zhu , Kai Zhang , Hongbin Liu
IPC: H04N19/82 , H04N19/17 , H04N19/117 , H04N19/132 , H04N19/136 , H04N9/77 , H04N19/186 , H04N19/70 , H04N19/80
CPC classification number: H04N19/132 , H04N9/77 , H04N19/117 , H04N19/136 , H04N19/17 , H04N19/186 , H04N19/70 , H04N19/80 , H04N19/82
Abstract: A method of video processing includes making a determination for a conversion between a video region of a video and a bitstream representation of the video to use a cross-component adaptive loop filtering (CC-ALF) tool for refining chroma samples values using luma sample values; and performing the conversion based on the determination, wherein the refining includes correcting the chroma sample values using a final refinement that is a further refinement of a first refinement value determined by selectively filtering the luma sample values.
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公开(公告)号：US20230262264A1
公开(公告)日：2023-08-17
申请号：US18164977
申请日：2023-02-06
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/70 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/132 , H04N19/17 , H04N19/30
CPC classification number: H04N19/70 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/132 , H04N19/17 , H04N19/30
Abstract: Devices, systems and methods related to digital video coding, and specifically, to management of syntax flags with respect chroma formats are described. In one representative aspect, the disclosed technology may be used to provide a method for video decoding. The method includes determining a chroma format associated with a region of a video and determining, based on the chroma format, whether one or more syntax flags applicable to the region of the video are included in a syntax structure of a coded representation of the video. The one or more syntax flags are indicative of a joint chroma residual coding step for representing the region in the coded representation. The method also includes generating one or more decoded video blocks of the region by parsing the coded representation according to a presence or an absence of the one or more syntax flags in the coded representation.
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