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公开(公告)号：US20220272348A1
公开(公告)日：2022-08-25
申请号：US17732743
申请日：2022-04-29
Inventor： Li ZHANG , Weijia ZHU , Kai ZHANG , Hongbin LIU
IPC: H04N19/132 , H04N19/117 , H04N19/80 , H04N19/186
Abstract: A method of video processing includes determining, for a conversion between a video region of a video and a bitstream representation of the video, to correct chroma samples of the video region using a cross-component adaptive loop filter (CC-ALF) process based on filtering of luma sample differences; and performing the conversion based on the determining.
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公开(公告)号：US20220264143A1
公开(公告)日：2022-08-18
申请号：US17652184
申请日：2022-02-23
Inventor： Jizheng XU , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
Abstract: A method of video processing is described. The method of video processing includes: constructing, for a conversion between a current video block of a current picture of a video and a coded representation of the video, a history-based motion vector predictor (HMVP) table according to a rule, and performing the conversion using the HMVP table, wherein the current video block is coded in the coded representation using a block vector that represents a displacement between the current video block and a region in the current picture used for predicting the current video block; wherein the rule specifies that the constructing uses block vector information of previously processed video blocks in the HMVP table.
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公开(公告)号：US20220264137A1
公开(公告)日：2022-08-18
申请号：US17718785
申请日：2022-04-12
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Jizheng XU , Yue WANG
IPC: H04N19/46 , H04N19/70 , H04N19/159 , H04N19/176
Abstract: An example method of video processing includes performing a conversion between a video picture of a video and a bitstream representation of the video. The bitstream representation conforms to a format rule. The format rule specifies that applicability of a Decoder-side Motion Vector Refinement coding tool and a Bi-Directional Optical Flow coding tool for the video picture are indicated separately in the bitstream representation.
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公开(公告)号：US20220256195A1
公开(公告)日：2022-08-11
申请号：US17711294
申请日：2022-04-01
Inventor： Kai ZHANG , Zhipin DENG , Hongbin LIU , Li ZHANG , Jizheng XU
IPC: H04N19/70 , H04N19/46 , H04N19/169 , H04N19/176
Abstract: An example method of video processing includes performing a conversion between a picture of a video that comprises one or more sub-pictures and a bitstream representation of the video. The bitstream representation conforms to a format rule that specifies that information about a sub-picture is included in the bitstream representation based on at least one of: (1) one or more corner positions of the sub-picture, or (2) a dimension of the sub-picture. The format rule further specifies that the information about the sub-picture is positioned after information about a coding tree block in the bitstream representation.
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公开(公告)号：US20220256166A1
公开(公告)日：2022-08-11
申请号：US17717515
申请日：2022-04-11
Inventor： Zhipin DENG , Li ZHANG , Hongbin LIU , Kai ZHANG , Jizheng XU , Yue WANG
IPC: H04N19/137 , H04N19/132 , H04N19/117 , H04N19/80 , H04N19/159 , H04N19/186 , H04N19/176 , H04N19/70
Abstract: A method of video processing is described. The method includes performing a conversion between a current video block of a video and a bitstream representation of the video, wherein, during the conversion, a prediction of the current video block is determined as a weighted sum of two or more predictions of the current video block, and a motion vector storing process for the current video block is determined according to a rule, wherein the current video block uses a partitioning prediction mode that is a first mode which is based on multiple first partitioning schemes or a second mode which is based on multiple second partitioning schemes, and wherein the rule specifies that a process used for determining which motion vector and how many motion vectors are stored is same for the first mode or the second mode.
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Patent Agency Ranking
公开(公告)号：US20220256146A1
公开(公告)日：2022-08-11
申请号：US17723175
申请日：2022-04-18
Inventor： Kai ZHANG , Zhipin DENG , Hongbin LIU , Li ZHANG , Jizheng XU
IPC: H04N19/117 , H04N19/82 , H04N19/132 , H04N19/186 , H04N19/176 , H04N19/46 , H04N19/70
Abstract: An example method of video processing includes determining, for a conversion between a block of a first sub-picture of a video and a bitstream representation of the video, whether to apply a deblocking process across an edge between the block and a neighboring block of a second sub-picture based on whether a loop filtering process is allowed across subpicture boundaries. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20220248063A1
公开(公告)日：2022-08-04
申请号：US17716447
申请日：2022-04-08
Applicant: Bytedance Inc.
Inventor： Weijia ZHU , Li ZHANG , Jizheng XU , Kai ZHANG
IPC: H04N19/82 , H04N19/186 , H04N19/117 , H04N19/70
Abstract: An example method of video processing includes making a determination, for a conversion between a current video block of a video and a bitstream representation of the video, whether a cross-component adaptive loop filtering tool is enabled for the current video block based on a color property of the video. The method also includes performing the conversion according to the determination.
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公开(公告)号：US20220217363A1
公开(公告)日：2022-07-07
申请号：US17700086
申请日：2022-03-21
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/176 , H04N19/107 , H04N19/583 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/105 , H04N19/117 , H04N19/119
Abstract: A method of decoding visual information from a coded representation of the visual information includes determining that a block being decoded representing a portion of an encoded picture of visual information is coded using a motion candidate associated with a motion vector, wherein the motion vector is derived as a weighted average of a plurality of motion vectors, wherein all of the plurality of motion vectors refer to a same picture type, and wherein a first picture type represents a current picture and a second picture type represents a reference pictures different from the current picture and decoding the block being decoded by using the motion candidate.
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公开(公告)号：US20220210444A1
公开(公告)日：2022-06-30
申请号：US17386519
申请日：2021-07-27
Inventor： Jizheng XU , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/176 , H04N19/174 , H04N19/52 , H04N19/593
Abstract: A method of visual media processing includes determining a size of a buffer to store reference samples for prediction in an intra block copy mode; and performing a conversion between a current video block of visual media data and a bitstream of the current video block, using the reference samples stored in the buffer, wherein the conversion is performed in the intra block copy mode which is based on motion information related to a reconstructed block located in same video region with the current video block without referring to a reference picture.
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公开(公告)号：US20220191549A1
公开(公告)日：2022-06-16
申请号：US17689709
申请日：2022-03-08
Inventor： Li ZHANG , Kai ZHANG , Jizheng XU , Hongbin LIU
IPC: H04N19/70 , H04N19/176 , H04N19/159 , H04N19/124 , H04N19/593
Abstract: A method of video processing includes determining, for a conversion between a current block of a video and a coded representation of the video, whether a syntax element indicating usage of a skip mode for an intra-block copy (IBC) coding model is included in the coded representation according to a rule that specifies that signaling of the syntax element is based on a dimension of the current block and/or a maximum allowed dimension for a block that is coded using the IBC coding model. The method also includes performing the conversion based on the determining.
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