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公开(公告)号：US20230074729A1
公开(公告)日：2023-03-09
申请号：US17977433
申请日：2022-10-31
Inventor： Li Zhang , Kai Zhang , Zhipin Deng , Hongbin Liu , Na Zhang , Yue Wang
IPC: H04N19/124 , H04N19/12 , H04N19/127 , H04N19/167 , H04N19/176 , H04N19/70
Abstract: Devices, systems, and methods for lossless coding for visual media coding are described. An exemplary method for video processing includes determining, based on a current video block of a video satisfying a dimension constraint, that coding modes are enabled for representing the current video block in a bitstream representation, where the dimension constraint states that a same set of allowed dimensions for the current video block is disabled for the coding modes, and where, for an encoding operation, the coding modes represent the current video block in the bitstream representation without using a transform operation, or where, for a decoding operation, the coding modes are used to obtain the current video block without using an inverse transform operation; and performing a conversion between the current video block and the bitstream representation of the video based on one of the coding modes.
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公开(公告)号：US20230066409A1
公开(公告)日：2023-03-02
申请号：US17967382
申请日：2022-10-17
Inventor： Zhipin Deng , Li Zhang , Ye-kui Wang , Kai Zhang
IPC: H04N19/70 , H04N19/169 , H04N19/172
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 video comprising one or more pictures comprising one or more slices and a bitstream of the video. The bitstream conforms to a predefined order between a position of a first NAL (network abstraction layer) unit in a picture unit carrying an adaptation parameter set information and a second NAL unit that is a last video coding layer (VCL) NAL unit in the picture unit.
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公开(公告)号：US20230064498A1
公开(公告)日：2023-03-02
申请号：US17975323
申请日：2022-10-27
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/513 , H04N19/137 , H04N19/70 , H04N19/96 , H04N19/105 , H04N19/176 , H04N19/184 , H04N19/52
Abstract: A method of video decoding is provided to include maintaining tables, wherein each table includes a set of motion candidates and each motion candidate is associated with corresponding motion information; and performing a conversion between a first video block and a bitstream representation of a video including the first video block, the performing of the conversion including using at least some of the set of motion candidates as a predictor to process motion information of the first video block.
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公开(公告)号：US20230063674A1
公开(公告)日：2023-03-02
申请号：US17968958
申请日：2022-10-19
Inventor： Ye-Kui Wang , Li Zhang , Kai Zhang , Zhipin Deng
IPC: H04N19/70 , H04N19/46 , H04N19/176 , H04N19/174
Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a block of a video and a bitstream of the video according to a rule. The rule specifies that whether a syntax flag indicating whether transform skip residual coding is enabled at a video unit level is present in the bitstream is based on values of a first syntax element indicating usage of sign data hiding in the video unit and a second syntax element indicating usage of dependent quantization in the video unit.
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公开(公告)号：US20230060824A1
公开(公告)日：2023-03-02
申请号：US17580446
申请日：2022-01-20
Inventor： Weijia ZHU , Li ZHANG , Jizheng XU , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/159 , H04N19/139 , H04N19/105 , H04N19/186 , H04N19/176
Abstract: Devices, systems and methods for video processing are described. An example method for video processing includes performing a conversion between a video comprising luma blocks and corresponding chroma blocks and a bitstream representation of the video according to a rule that specifies that, for a case that a current luma block is coded using a palette coding mode and a corresponding current chroma block coded with a derived mode, the current luma block is treated as having a default intra prediction mode and the current chroma block is coded with the default intra prediction mode.
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Patent Agency Ranking
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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公开(公告)号：US20230058538A1
公开(公告)日：2023-02-23
申请号：US17958531
申请日：2022-10-03
Inventor： Zhipin Deng , Li Zhang , Ye-Kui Wang , Kai Zhang , Jizheng Xu
IPC: H04N19/117 , H04N19/70 , H04N19/124 , H04N19/186 , H04N19/196
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 video and a bitstream of the video according to a format rule. The format rule specifies that a first field at a sequence level or a picture level or a slice level controls a value of a second field in an adaptation parameter set.
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公开(公告)号：US20230048394A1
公开(公告)日：2023-02-16
申请号：US17942432
申请日：2022-09-12
Inventor： Zhipin DENG , Ye-Kui WANG , Li ZHANG , Kai ZHANG
IPC: H04N19/70 , H04N19/124 , H04N19/172 , H04N19/186 , H04N19/174 , H04N19/12 , H04N19/132 , H04N19/85 , H04N19/60
Abstract: Methods, systems, and apparatus for video processing are described. One example video processing method includes performing a conversion between a video comprising a luma block and a bitstream of the video according to a rule. The rule specifies that whether a slice header (SH) includes a first syntax element is based on a second syntax element. The first syntax element indicates whether use of a delta quantization parameter (QP) is enabled for one or more coding units (CUs) of a specific slice of the luma block.
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公开(公告)号：US20230039617A1
公开(公告)日：2023-02-09
申请号：US17942618
申请日：2022-09-12
Inventor： Zhipin Deng , Ye-Kui Wang , Li Zhang , Kai Zhang
IPC: H04N19/12 , H04N19/176 , H04N19/70 , H04N19/157
Abstract: Methods, systems and apparatus for video processing are described. One example video processing method includes performing a conversion between a video including a video block and a bitstream of the video according to a rule, wherein the rule specifies whether to include, in a slice header (SH), a first syntax element that indicates whether a transform skip based residual coding is disabled for a slice, and wherein the rule specifies that whether to include the first syntax element in the SH is selectively based on a second syntax element in a sequence parameter set (SPS) that indicates whether a TS mode is enabled for the video block.
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公开(公告)号：US11575940B2
公开(公告)日：2023-02-07
申请号：US17400464
申请日：2021-08-12
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/61 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/70 , H04N19/11 , H04N19/12 , H04N19/124
Abstract: A video processing method is provided to include: performing a conversion between a current video block of a video and a coded representation of the video, wherein the performing of the conversion includes configuring, based on a characteristic of the current video block of a video, a context model for coding a bin or bypass coding the bin of a bin string corresponding to an index of a secondary transform tool, wherein the index indicates an applicability of the secondary transform tool and/or a kernel information of the secondary transform tool, and 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 wherein the secondary transform tool includes applying, during decoding, an inverse secondary transform to an output of dequantization to the video block before applying an inverse primary transform.
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