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Patent Agency Ranking
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：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：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：US12166988B2
公开(公告)日：2024-12-10
申请号：US17652176
申请日：2022-02-23
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Tianliang Fu , Jizheng Xu , Yue Wang
IPC: H01L29/94 , H04N19/129 , H04N19/176 , H04N19/18 , H04N19/70
Abstract: Video processing methods, devices, and systems are provided. In one example aspect, a method of video processing includes performing a conversion between a current block of a video and a coded representation of the video. The current block has a width W and a height H and includes an allowable scanning region that includes non-zero transform coefficients that are coded in the coded representation according to a scanning order. The allowable scanning region is restricted to a portion of the current block according to a rule that specifies that a bottom-right corner position of the allowable scanning region is different than a bottom-right corner position of the current block.
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