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公开(公告)号：US20240107037A1
公开(公告)日：2024-03-28
申请号：US18513020
申请日：2023-11-17
Inventor： Jizheng Xu , Li Zhang , Ye-kui Wang , Kai Zhang , Weijia Zhu , Yue Wang , Yang Wang , Hongbin Liu
IPC: H04N19/186 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/96
CPC classification number: H04N19/186 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/96
Abstract: Video processing methods, systems and appratrus are described. One example method includes performing a conversion between a video block of a video and a bitstream of the video using a palette mode in which samples of the video block are represented using a palette of representive color values. A size of the palette of the video block is determined based on whether a local dual tree is applied for the conversion.
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公开(公告)号：US20240098308A1
公开(公告)日：2024-03-21
申请号：US18516493
申请日：2023-11-21
Inventor： Zhipin Deng , Li Zhang , Ye-kui Wang , Kai Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/117 , H04N19/169 , H04N19/186
CPC classification number: H04N19/70 , H04N19/117 , H04N19/186 , H04N19/188
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 constraints on values of one or more first syntax elements in an adaptation parameter set are defined based on semantics of second syntax elements in a picture header and/or a slice header when a picture or a slice referring to the adaptation parameter set.
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公开(公告)号：US11936852B2
公开(公告)日：2024-03-19
申请号：US17978263
申请日：2022-11-01
Inventor： Jizheng Xu , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/105 , H04N19/159 , H04N19/176
CPC classification number: H04N19/105 , H04N19/159 , H04N19/176
Abstract: A method of video processing includes maintaining, for a conversion between a current video block of a current picture of a visual media data and a bitstream representation of the visual media data, a buffer comprising reference samples from the current picture for a derivation of prediction samples of the current video block. One or more reference samples in the buffer that are marked unavailable for the derivation have values outside of a pixel value range.
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公开(公告)号：US11924418B2
公开(公告)日：2024-03-05
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 , H04N19/124 , H04N19/186 , H04N19/196 , H04N19/70 , H04N19/86 , H04N19/157
CPC classification number: H04N19/117 , H04N19/124 , H04N19/186 , H04N19/196 , H04N19/70 , H04N19/157 , H04N19/86
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：US20240064286A1
公开(公告)日：2024-02-22
申请号：US18492944
申请日：2023-10-24
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/70
CPC classification number: H04N19/105 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/70
Abstract: A method of video processing includes making a first determination about whether a decoder-side motion vector refinement (DMVR) tool is enabled for a conversion between a current block of a current picture of a video and a coded representation of the video; making a second determination, based on the first determination, about whether or how to clip a motion vector according to a bounding block for reference sample padding in a reference picture used for determining a prediction block for the current block according to a rule, and performing the conversion based on the first determination and the second determination. By using the DMVR tool, an encoded motion vector from the coded representation is refined prior to using for determining the prediction block.
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Patent Agency Ranking
公开(公告)号：US11910004B2
公开(公告)日：2024-02-20
申请号：US17534968
申请日：2021-11-24
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/52 , H04N19/159 , H04N19/105 , H04N19/119 , H04N19/176 , H04N19/184 , H04N19/577 , H04N19/593
CPC classification number: H04N19/52 , H04N19/105 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/577 , H04N19/593
Abstract: Difference calculation based on partial position is described. In a representative aspect, a method of video processing comprising: calculating, during a conversion between a current block of video and a bitstream representation of the current block, differences between two reference blocks associated with the current block or differences between two reference sub-blocks associated with a sub-block within the current block based on representative positions of the reference blocks or representative positions of the reference sub-blocks; and performing the conversion based on the differences.
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公开(公告)号：US20240056609A1
公开(公告)日：2024-02-15
申请号：US18485088
申请日：2023-10-11
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Hsiao Chiang Chuang
IPC: H04N19/70 , H04N19/132 , H04N19/176 , H04N19/186
CPC classification number: H04N19/70 , H04N19/132 , H04N19/176 , H04N19/186
Abstract: Methods, systems, and devices for performing entropy coding for a palette escape symbol in palette mode coding and decoding are described. An example method for video processing includes performing a conversion between a video having one or more video regions including a current video block and a bitstream representation of the video, wherein the bitstream representation conforms to a format rule that the current video block is coded using a palette mode coding tool, wherein a binarization of an escape symbol for the current video block uses an exponential-Golomb (EG) code of order K, wherein K is a non-negative integer that is unequal to three, and wherein the palette mode coding tool represents the current video block using a palette of representative color values and wherein the escape symbol is used for a sample of the current video block coded without using the representative color values.
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公开(公告)号：US11856237B2
公开(公告)日：2023-12-26
申请号：US17962852
申请日：2022-10-10
Inventor： Zhipin Deng , Li Zhang , Ye-kui Wang , Kai Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/117 , H04N19/186 , H04N19/169
CPC classification number: H04N19/70 , H04N19/117 , H04N19/186 , H04N19/188
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 constraints on values of one or more first syntax elements in an adaptation parameter set are defined based on semantics of second syntax elements in a picture header and/or a slice header if a picture or a slice referring to the adaptation parameter set.
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公开(公告)号：US11825097B2
公开(公告)日：2023-11-21
申请号：US17246794
申请日：2021-05-03
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/70 , H04N19/159 , H04N19/149 , H04N19/132 , H04N19/30 , H04N19/593 , H04N19/11 , H04N19/50
CPC classification number: H04N19/149 , H04N19/105 , H04N19/11 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/50 , H04N19/593 , H04N19/70
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, multiple sets of parameters, wherein each set of parameters defines a cross-component linear model (CCLM) and is derived from a corresponding group of chroma samples at corresponding chroma sample positions; determining, based on the multiple sets of parameters, parameters for a final CCLM; and performing the conversion based on the final CCLM.
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公开(公告)号：US11812040B2
公开(公告)日：2023-11-07
申请号：US17714480
申请日：2022-04-06
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/00 , H04N19/186 , H04N19/117 , H04N19/159 , H04N19/70
CPC classification number: H04N19/186 , H04N19/117 , H04N19/159 , H04N19/70
Abstract: A method for video processing is provided to include: performing a conversion between a current video block of a video and a coded representation of current video block, wherein the conversion uses a coding mode in which the current video block is constructed based on a first domain and a second domain and/or chroma residue is scaled in a luma-dependent manner, and wherein information used for the coding mode is signaled in a parameter set that is different from a sequence parameter set (SPS), a video parameter set (VPS), a picture parameter set (PPS), or an adaptation parameter set (APS) used for carrying adaptive loop filtering (ALF) parameters.
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