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公开(公告)号：US20240129489A1
公开(公告)日：2024-04-18
申请号：US18511582
申请日：2023-11-16
Inventor： Kai Zhang , Yuwen He , Li Zhang , Hongbin Liu , Tianliang Fu , Junru Li , Siwei Ma
IPC: H04N19/157 , H04N19/176 , H04N19/186
CPC classification number: H04N19/157 , H04N19/176 , H04N19/186
Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of processing video data includes determining, for a conversion between a video block of a video and a bitstream of the video, a gradient of a prediction vector at a sub-block level for the video block according to a rule, wherein the rule specifies to use a same gradient value is assigned for all samples within a sub-block of the video block; and performing the conversion based on the determining.
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公开(公告)号：US20230037443A1
公开(公告)日：2023-02-09
申请号：US17953045
申请日：2022-09-26
Inventor： Kai Zhang , Li Zhang , Tianliang Fu , Yue Wang , Siwei Ma
IPC: H04N19/61 , H04N19/189 , H04N19/176 , H04N19/70
Abstract: A video processing method includes performing a conversion between a video block of a video and a bitstream of the video according to a rule. The rule specifies whether or how usage of a secondary transform within a video unit is indicated in the bitstream. The secondary transform is applied before quantization or after de-quantization.
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公开(公告)号：US20230017146A1
公开(公告)日：2023-01-19
申请号：US17939717
申请日：2022-09-07
Inventor： Li Zhang , Kai Zhang , Yuhuai Zhang , Hongbin Liu , Yue Wang , Siwei Ma
IPC: H04N19/136 , H04N19/105 , H04N19/176
Abstract: Methods, system and apparatus for video processing are described. One example video processing method includes determining, for a conversion between a current video block of a video and a bitstream of the video, a usage of an identity transform mode for the conversion of the current video block according to a rule. The rule specifies that the usage is based on representative coefficients of one or more representative blocks of the video. The method also includes performing the conversion based on the determining.
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公开(公告)号：US11956448B2
公开(公告)日：2024-04-09
申请号：US18076869
申请日：2022-12-07
Inventor： Kai Zhang , Yuwen He , Li Zhang , Hongbin Liu , Tianliang Fu , Junru Li , Siwei Ma
IPC: H04N19/157 , H04N19/176 , H04N19/186
CPC classification number: H04N19/157 , H04N19/176 , H04N19/186
Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of processing video data includes determining, for a conversion between a video block of a video and a bitstream of the video, a gradient of a prediction vector at a sub-block level for the video block according to a rule, wherein the rule specifies to use a same gradient value is assigned for all samples within a sub-block of the video block; and performing the conversion based on the determining.
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公开(公告)号：US20240276020A1
公开(公告)日：2024-08-15
申请号：US18624889
申请日：2024-04-02
Applicant: Lemon Inc. , Beijing Bytedance Network Technology Co., Ltd. , Bytedance Inc. , Bytedance (HK) Limited
IPC: H04N19/82 , H04N19/117 , H04N19/70
CPC classification number: H04N19/82 , H04N19/117 , H04N19/70
Abstract: A method implemented by a video coding apparatus includes applying a neural network (NN) filter to an unfiltered sample of a video unit to generate a filtered sample. The NN filter is applied based on a syntax element of the video unit. The method also includes converting between a video media file and a bitstream based on the filtered sample that was generated.
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Patent Agency Ranking
公开(公告)号：US20230262226A1
公开(公告)日：2023-08-17
申请号：US18304631
申请日：2023-04-21
Inventor： Hongbin Liu , Kai Zhang , Li Zhang , Yue Wang , Junru Li , Tianliang Fu , Siwei Ma
IPC: H04N19/132 , H04N19/159 , H04N19/176
CPC classification number: H04N19/132 , H04N19/159 , H04N19/176
Abstract: Methods, systems and devices for sample string processing in intra coding are described. An example method of video processing includes determining, for a conversion between a video comprising a current block and a bitstream of the video, whether a first sample string of the current block forms a rectangle, and performing, based on the determining, the conversion, wherein the determining is based on a position and a length of the first sample string.
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公开(公告)号：US20230199177A1
公开(公告)日：2023-06-22
申请号：US18172129
申请日：2023-02-21
Inventor： Li Zhang , Kai Zhang , Yuhuai Zhang , Hongbin Liu , Yue Wang , Siwei Ma
IPC: H04N19/105 , H04N19/70 , H04N19/176
CPC classification number: H04N19/105 , H04N19/70 , H04N19/176
Abstract: Methods, system and apparatus for video processing are described. One example method of processing video data 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 whether a transform skip mode is enabled is determined based on coding information of the current block. The transform skip mode is a coding mode in which a transform is skipped on a prediction residual of a video block.
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公开(公告)号：US20240056570A1
公开(公告)日：2024-02-15
申请号：US18487350
申请日：2023-10-16
IPC: H04N19/117 , G06T9/00 , H04N19/186 , H04N19/82
CPC classification number: H04N19/117 , G06T9/002 , H04N19/186 , H04N19/82
Abstract: A method implemented by a video coding apparatus. The method includes applying a first filter to an unfiltered sample of a video unit to generate a filtered sample. The first filter is a neural network (NN) filter based on a non-deep learning-based filter (NDLF) being disabled, and the first filter is the NDLF based on the NN filter being disabled. The method also includes performing a conversion between a video media file and a bitstream based on the filtered sample that was generated.
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公开(公告)号：US20230262225A1
公开(公告)日：2023-08-17
申请号：US18303993
申请日：2023-04-20
IPC: H04N19/132 , H04N19/176 , H04N19/159
CPC classification number: H04N19/132 , H04N19/176 , H04N19/159
Abstract: Methods, systems and devices for video coding using sample string vectors are described. An example method of video processing includes determining, for a conversion between a video including a current block and a bitstream of the video, an availability of a block vector of one or more non-adjacent neighboring blocks of the current block for a prediction of a block vector of the current block according to a rule, and performing, based on the determining, the conversion, wherein the rule specifies a pre-defined order for checking the one or more non-adjacent neighboring blocks.
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公开(公告)号：US20230199185A1
公开(公告)日：2023-06-22
申请号：US18172110
申请日：2023-02-21
Inventor： Li Zhang , Kai Zhang , Yuhuai Zhang , Hongbin Liu , Yue Wang , Siwei Ma
IPC: H04N19/122 , H04N19/176 , H04N19/70 , H04N19/18 , H04N19/132 , H04N19/61 , H04N19/593 , H04N19/159
CPC classification number: H04N19/122 , H04N19/176 , H04N19/70 , H04N19/18 , H04N19/132 , H04N19/61 , H04N19/593 , H04N19/159
Abstract: Methods, system and apparatus for video processing are described. One example method of processing video data 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 coded information of the current block determines usage of coefficient reordering by which coefficients of the current block parsed from the bitstream are reordered prior to applying a dequantization process, an inverse transform process, or a reconstruction process.
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