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公开(公告)号：US20220060692A1
公开(公告)日：2022-02-24
申请号：US17519310
申请日：2021-11-04
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/105 , H04N19/176 , H04N19/51
Abstract: A video processing method is provided to include determining, for a conversion between a current video block of a current picture of a video and a coded representation of the video, that use of a coding tool is disabled for the current video block due to use of a reference picture having a dimension different from a dimension of the current picture for coding of the current video block into the coded representation; and performing the conversion based on the determining.
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公开(公告)号：US20220038706A1
公开(公告)日：2022-02-03
申请号：US17502258
申请日：2021-10-15
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/132 , H04N19/105 , H04N19/159 , H04N19/176
Abstract: Techniques, devices, and systems for video processing are described. In one example aspect, a video processing method includes determining, for a conversion between a block of a video and a bitstream representation of the video, a manner in which information for a Matrix-based Intra Prediction (MIP) coding technique is coded in the bitstream representation. A prediction block of the block is determined using the MIP coding technique based on performing a matrix vector multiplication operation on previously coded samples of the video. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20220030267A1
公开(公告)日：2022-01-27
申请号：US17487200
申请日：2021-09-28
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC: H04N19/52 , H04N19/105 , H04N19/117 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/132 , H04N19/159 , H04N19/30 , H04N19/70
Abstract: A method for video processing is provided to include: performing a conversion between a current video block of a video that is a chroma block and a coded representation of the video, wherein, during the conversion, the current video block is constructed based on a first domain and a second domain, and wherein the conversion further includes applying a forward reshaping process and/or an inverse reshaping process to one or more chroma components of the current video block.
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公开(公告)号：US20220030257A1
公开(公告)日：2022-01-27
申请号：US17494974
申请日：2021-10-06
Inventor： Zhipin DENG , Li ZHANG , Hongbin LIU , Kai ZHANG , Jizheng XU
IPC: H04N19/186 , H04N19/593
Abstract: A method for visual media processing, including: using a rule that specifies representing, based on a fixed value, a chroma residual scaling factor for at least one chroma block associated with a current video unit of visual media data, wherein the fixed value is based at least on one or more conditions; and performing a conversion between the current video unit and a bitstream representation of the current video unit.
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公开(公告)号：US20220030240A1
公开(公告)日：2022-01-27
申请号：US17473366
申请日：2021-09-13
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Jizheng XU , Weijia ZHU , Yue WANG
IPC: H04N19/122 , H04N19/119 , H04N19/176 , H04N19/13 , H04N19/157 , H04N19/105 , H04N19/70
Abstract: A method for video processing includes determining, based on a first indication, whether a sub-block residual coding scheme is applied to residual of a current video block in a transform skip mode, the sub-block residual coding scheme splitting the residual of the current video block into multiple sub-blocks and a subset of the multiple sub-blocks have non-zero coefficients; determining, based on a second indication, a specific split pattern to be applied to the residual of the current video block, in response to the sub-block residual coding scheme being applied to the residual of the current video block; deriving, based on a third indication, the subset of the multiple sub-blocks which have non-zero coefficients; and performing a conversion on the residue of the current video block based on the determined subset of sub-blocks having non-zero coefficients.
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Patent Agency Ranking
公开(公告)号：US20220014734A1
公开(公告)日：2022-01-13
申请号：US17484636
申请日：2021-09-24
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Jizheng XU , Yue WANG
IPC: H04N19/105 , H04N19/132 , H04N19/117 , H04N19/80 , H04N19/176
Abstract: A method of video processing is provided to include: maintaining, prior to a conversion between a current video block of a video region and a coded representation of the video, at least one history-based motion vector prediction (HMVP) table, wherein the HMVP table includes one or more entries corresponding to motion information of one or more previously processed blocks; and performing the conversion using the at least one HMVP table; and wherein the motion information of each entry is configured to include interpolation filter information for the one or more previously processed blocks, wherein the interpolation filter information indicates interpolation filters used for interpolating prediction blocks of the one or more previously processed blocks.
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公开(公告)号：US20220007057A1
公开(公告)日：2022-01-06
申请号：US17473440
申请日：2021-09-13
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Jizheng XU , Weijia ZHU , Yue WANG
IPC: H04N19/60 , H04N19/119 , H04N19/14 , H04N19/176
Abstract: A method for video processing includes applying a sub-block residual coding scheme to a current video block, wherein the residual of the current video block is split into a plurality of sub-blocks each having a size of M*N, determining at least one sub-block with non-zero coefficients based on characteristic associated with each of the plurality of sub-blocks; coding the residue of the current video block based on the derived at least one sub-block with non-zero coefficients.
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公开(公告)号：US20210400299A1
公开(公告)日：2021-12-23
申请号：US17463838
申请日：2021-09-01
Inventor： Weijia ZHU , Hongbin LIU , Kai ZHANG , Li ZHANG , Jizheng XU , Yue WANG
IPC: H04N19/513 , H04N19/105 , H04N19/46 , H04N19/176
Abstract: Motion Vector Management for Decoder Side Motion Vector Refinement is disclosed. A method of video processing including: determining, for a conversion between a first block of video and a bitstream representation of the first block of video, whether and/or how to apply decoder-side motion vector refinement (DMVR) based on a signaled information; and performing the conversion based on the determination.
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公开(公告)号：US20210400260A1
公开(公告)日：2021-12-23
申请号：US17466188
申请日：2021-09-03
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC: H04N19/105 , H04N19/176 , H04N19/167 , H04N19/186 , H04N19/159 , H04N19/132
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, whether to derive maximum values and/or minimum values of a luma component and a chroma component that are used to derive parameters of a cross-component linear model (CCLM) based on availability of a left-neighboring block and an above-neighboring block of the current video block; and performing the conversion based on the determining.
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公开(公告)号：US20210385499A1
公开(公告)日：2021-12-09
申请号：US17400512
申请日：2021-08-12
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/70 , H04N19/61 , H04N19/186 , H04N19/176
Abstract: A video processing method is provided to comprise: performing a conversion between a current video block of a video and a coded representation of the current video block, wherein the coded representation conforms to a format rule specifying that a syntax element corresponding to side information of a secondary transform tool for the current video block is signaled in the coded representation before transform related information, wherein the secondary transform tool includes applying, during encoding, a forward secondary transform to an output of a forward primary transform applied to a residual of a video block prior to quantization, or applying, during decoding, an inverse secondary transform to an output of dequantization of the video block before applying an inverse primary transform.
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