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公开(公告)号：US20230396792A1
公开(公告)日：2023-12-07
申请号：US18452331
申请日：2023-08-18
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Na Zhang , Yang Wang
IPC: H04N19/513 , H04N19/132 , H04N19/176
CPC classification number: H04N19/513 , H04N19/132 , H04N19/176
Abstract: A method for coding video data implemented by a video coding apparatus. The method includes clipping a motion vector of a padding sample to be within a motion vector range, wherein the motion vector range is based on a maximum padding dimension of an extended area around a video unit of a video; and converting between the video unit of the video and a bitstream in accordance with the motion vector as constrained.
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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：US20230164313A1
公开(公告)日：2023-05-25
申请号：US17982038
申请日：2022-11-07
Inventor： Yang Wang , Li Zhang , Hongbin Liu , Kai Zhang , Zhipin Deng , Yue Wang
IPC: H04N19/117 , H04N19/186 , H04N19/96
CPC classification number: H04N19/117 , H04N19/96 , H04N19/186
Abstract: A method for video processing is described. The method includes determining, for a conversion between a video unit of a video and a bitstream representation of the video, whether to enable a mirrored padding process for padding an unavailable luma sample during an application of a loop filtering tool to the video unit; and performing the conversion based on the determining.
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公开(公告)号：US20230115118A1
公开(公告)日：2023-04-13
申请号：US17976189
申请日：2022-10-28
Inventor： Yang Wang , Li Zhang , Zhipin Deng , Kai Zhang , Hongbin Liu
IPC: H04N19/137 , H04N19/189 , 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 block of a video and a bitstream of the video according to a rule. The conversion is based on an adaptive motion vector difference resolution (AMVR) tool, and the rule specifies that selection of a context for a first bin within a bin string of a first syntax element that specifies the resolution of the motion vector difference associated with an AMVR shift is derived based on usage of a coding mode for the block.
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公开(公告)号：US11595658B2
公开(公告)日：2023-02-28
申请号：US17691867
申请日：2022-03-10
Inventor： Yang Wang , Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/105 , H04N19/137
Abstract: A method of video processing is described. The method includes: making a first determination about whether a collocated video block of a video block of a video is coded using an inter coding mode or a non-inter coding mode; making a second determination, based on the first determination, about availability of motion vectors of the collocated video block or a mode of derivation of motion vectors for the collocated video block; and performing a conversion between the video block and a coded representation of the video based on the second determination.
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Patent Agency Ranking
公开(公告)号：US20220377367A1
公开(公告)日：2022-11-24
申请号：US17873917
申请日：2022-07-26
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yang Wang , Jizheng Xu , Yue Wang
IPC: H04N19/513 , H04N19/577
Abstract: Motion compensation along different directions is disclosed. A method for video processing including: determining, for a conversion between a current video block of a video and a bitstream representation of the current video block, optical flow associated with the current video block in an optical flow-based motion refinement process or prediction process, wherein the optical flow is derived along directions that are different from a horizontal direction and/or a vertical direction; and performing the conversion based on the optical flow.
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公开(公告)号：US12170789B2
公开(公告)日：2024-12-17
申请号：US17873917
申请日：2022-07-26
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yang Wang , Jizheng Xu , Yue Wang
IPC: H04N19/513 , H04N19/577
Abstract: Motion compensation along different directions is disclosed. A method for video processing including: determining, for a conversion between a current video block of a video and a bitstream representation of the current video block, optical flow associated with the current video block in an optical flow-based motion refinement process or prediction process, wherein the optical flow is derived along directions that are different from a horizontal direction and/or a vertical direction; and performing the conversion based on the optical flow.
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公开(公告)号：US12114016B2
公开(公告)日：2024-10-08
申请号：US17888238
申请日：2022-08-15
Inventor： Kai Zhang , Li Zhang , Yang Wang , Ye-kui Wang , Zhipin Deng , Jizheng Xu , Hongbin Liu
IPC: H04N19/70 , H04N19/117 , H04N19/119 , H04N19/172 , H04N19/174 , H04N19/186 , H04N19/46 , H04N19/635 , H04N19/82
CPC classification number: H04N19/70 , H04N19/117 , H04N19/119 , H04N19/172 , H04N19/174 , H04N19/186 , H04N19/46 , H04N19/635 , H04N19/82
Abstract: A method includes performing a conversion between a video unit of a video and a bitstream of the video. The bitstream conforms to a format rule. The format rule specifies that a syntax element indicating whether an in-loop filtering operation is performed across slice boundaries is selectively included in the bitstream based on whether or how the video unit is partitioned into slices.
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公开(公告)号：US12081766B2
公开(公告)日：2024-09-03
申请号：US17962894
申请日：2022-10-10
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yang Wang , Yue Wang
IPC: H04N19/105 , H04N19/132 , H04N19/137 , H04N19/176
CPC classification number: H04N19/137 , H04N19/105 , H04N19/132 , H04N19/176
Abstract: A method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, an operation associated with a list of motion candidates based on a condition related to a characteristic of the current block. The list of motion candidates is constructed for a coding technique or based on information from previously processed blocks of the video. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20240244191A1
公开(公告)日：2024-07-18
申请号：US18436146
申请日：2024-02-08
Inventor： Kai Zhang , Li Zhang , Zhipin Deng , Na Zhang , Yang Wang
IPC: H04N19/11 , H04N19/159 , H04N19/176 , H04N19/593 , H04N19/70
CPC classification number: H04N19/11 , H04N19/159 , H04N19/176 , H04N19/593 , H04N19/70
Abstract: A mechanism for processing video data implemented by a video coding apparatus is disclosed. The mechanism determines to apply template-based intra mode derivation (TIMD) to a block based on whether the block is dyadic or non-dyadic, where TMID is associated with intra prediction. A conversion between a visual media data and a bitstream is performed by applying intra prediction to the block based on TIMD.
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