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公开(公告)号：US20230029791A1
公开(公告)日：2023-02-02
申请号：US17949938
申请日：2022-09-21
Inventor： Ye-kui Wang , Li Zhang , Kai Zhang , Zhipin Deng
IPC: H04N19/70 , H04N19/46 , H04N19/172
Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a subpicture in a video picture of a video and a bitstream of the video according to a rule. The rule specifies that multiple syntax elements are used to specify usage of a reference picture resampling tool.
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公开(公告)号：US20230022121A1
公开(公告)日：2023-01-26
申请号：US17856601
申请日：2022-07-01
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/117 , H04N19/14 , H04N19/132 , H04N19/96 , H04N19/176 , H04N19/82
Abstract: A method of video processing includes determining a classification of samples of a block in a video picture of a video according to a rule, wherein the video picture is divided into multiple regions, and wherein the rule disallows use of neighboring samples of a current sample across one or more boundaries of the multiple regions for the classification. The one or more boundaries of the multiple regions includes a virtual boundary for an adaptive loop filtering (ALF) process. The method also includes performing a conversion between the block and a bitstream representation of the video by selectively applying the ALF process according to the classification.
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公开(公告)号：US20230021488A1
公开(公告)日：2023-01-26
申请号：US17898051
申请日：2022-08-29
Inventor： Zhipin Deng , Ye-kui Wang , Li Zhang , Kai Zhang , Kui Fan
IPC: H04N19/70 , H04N19/174 , H04N19/172 , H04N19/105 , H04N19/107 , H04N19/186 , H04N19/169 , H04N19/30
Abstract: Methods, systems, apparatus for video processing are described. A method for processing video includes performing a conversion between a video and a bitstream of the video according to a format rule, and wherein the format rule specifies whether a syntax element in a sequence parameter set (SPS) based on a value of a general constraint flag.
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公开(公告)号：US20230014129A1
公开(公告)日：2023-01-19
申请号：US17896761
申请日：2022-08-26
Inventor： Jizheng Xu , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/132 , H04N19/176 , H04N19/423 , H04N19/96
Abstract: A method of visual media processing includes determining, for a conversion between a current video block of visual media data and a bitstream representation of the current video block, a buffer that stores reference samples for prediction in an intra block copy mode; for a sample spatially located at location of the current video block relative to an upper-left position of a coding tree unit including the current video block and having a block vector, computing a corresponding reference in the buffer at a reference location, wherein the reference location is determined using the block vector and the location; and upon determining that the reference location lies outside the buffer, re-computing the reference location based at least in part on a location of the current video block relative to the coding tree unit including the current video block.
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公开(公告)号：US20230007253A1
公开(公告)日：2023-01-05
申请号：US17901270
申请日：2022-09-01
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang , Li Zhang , Kai Zhang
IPC: H04N19/12 , H04N19/176 , H04N19/70 , H04N19/60 , H04N19/18
Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video block of a video and a bitstream of the video. The video block uses a low frequency non-separable transform for the conversion. The bitstream conforms to a format rule specifying that a syntax element is included at a syntax level for the bitstream. The syntax element is indicative of whether use of a scaling matrix which is derived from a reference scaling list is enabled for the video block. The syntax level is a sequence level, a picture level, or a slice level.
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Patent Agency Ranking
公开(公告)号：US11546601B2
公开(公告)日：2023-01-03
申请号：US17207060
申请日：2021-03-19
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/137 , H04N19/105 , H04N19/176 , H04N19/513 , H04N19/30 , H04N19/503
Abstract: A method of video processing includes determining, for a current block, at least one motion candidate list; and performing a conversion between the current block and a bitstream representation of the current block using the at least one motion candidate list, the at least one motion candidate list including at least one motion candidate derived from a set of neighboring blocks including one or more spatial and temporal neighboring blocks.
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公开(公告)号：US20220417565A1
公开(公告)日：2022-12-29
申请号：US17892858
申请日：2022-08-22
Inventor： Kai Zhang , Li Zhang , Ye-kui Wang , Zhipin Deng , Kui Fan , Jizheng Xu , Hongbin Liu
IPC: H04N19/96 , H04N19/184 , H04N19/70
Abstract: A method includes performing a conversion between a video that includes at least a video tile and a bitstream of the video according to a rule. The rule specifies that a height of a slice in the video tile in units of coding tree units is derived based on a value of a first syntax element in the bitstream indicating a number of explicitly provided slice heights for slices in the video tile that includes the slice.
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公开(公告)号：US11539981B2
公开(公告)日：2022-12-27
申请号：US17556689
申请日：2021-12-20
Inventor： Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Weijia Zhu , Yue Wang
IPC: H04N19/186 , H04N19/593 , H04N19/96 , H04N19/105 , H04N19/11 , H04N19/119 , H04N19/70 , H04N19/159 , H04N19/132 , H04N19/124 , H04N19/61 , H04N19/169 , H04N19/12 , H04N19/17 , H04N19/30 , H04N9/67
Abstract: A method of video processing is provided. The method includes determining, due to a dual tree partitioning structure being used for a conversion between a video unit and a coded representation of the video unit, that use of an adaptive color space transformation (ACT) tool is disabled for the video unit; and performing, based on the determining, the conversion by disabling the ACT tool for the video unit, wherein the use of the ACT tool comprises: converting, during encoding a representation of a visual signal from a first color domain to a second color domain, or converting during decoding, a representation of a visual signal from the second color domain to the first color domain.
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公开(公告)号：US11533496B2
公开(公告)日：2022-12-20
申请号：US17479192
申请日：2021-09-20
Inventor： Zhipin Deng , Li Zhang , Hongbin Liu , Kai Zhang , Jizheng Xu
IPC: H04N19/30 , H04N19/105 , H04N19/176 , H04N19/186 , H04N19/132 , H04N19/70 , H04N19/146 , H04N19/196 , H04N19/96
Abstract: A method for visual media processing, including performing a conversion between a current chroma chroma block of visual media data and a bitstream representation of the current chroma chroma block, wherein, during the conversion, a chroma residual of the current chroma chroma block is scaled based on a scaling coefficient, wherein the scaling coefficient is derived at least based on luma samples located in predefined positions.
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公开(公告)号：US11533487B2
公开(公告)日：2022-12-20
申请号：US17567717
申请日：2022-01-03
Inventor： Zhipin Deng , Li Zhang , Hongbin Liu , Kai Zhang , Jizheng Xu
IPC: H04N19/132 , H04N19/105 , H04N19/176 , H04N19/30 , H04N19/186 , H04N19/70
Abstract: A method for visual media processing includes performing a conversion between a current video unit of a visual media data and a bitstream representation of the current video unit, wherein the bitstream representation is configured according to a format rule; and wherein the format rule specifies a level of a video segment at which one or more syntax elements indicative of a scaling factor by which a chroma residual is scaled for coding the current video unit is selectively included in the bitstream representation.
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