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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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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：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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Patent Agency Ranking
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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公开(公告)号：US20220182667A1
公开(公告)日：2022-06-09
申请号：US17651975
申请日：2022-02-22
Inventor： Junru LI , Meng WANG , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG , Shiqi WANG
IPC: H04N19/593 , H04N19/186 , H04N19/132 , H04N19/176 , H04N19/105 , H04N19/159
Abstract: A video processing method includes performing a conversion between a video including a video unit and a coded representation of the video, where, after the video unit is encoded or decoded with an intra prediction mode, one or more frequence tables and/or one or more sorted intra prediction mode (IPM) tables are selectively updated according to a rule, where the one or more frequence tables include information about frequence of the intra prediction mode used for processing the video unit in the conversion, where the frequence indicates an occurrence of the intra prediction mode used for the conversion, and where the one or more sorted IPM tables indicate the intra prediction mode used in the processing.
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公开(公告)号：US20220174310A1
公开(公告)日：2022-06-02
申请号：US17386497
申请日：2021-07-27
Inventor： Jizheng XU , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/52 , H04N19/176 , 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：US20220159259A1
公开(公告)日：2022-05-19
申请号：US17585788
申请日：2022-01-27
Inventor： Kui FAN , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/13 , H04N19/96 , H04N19/60 , H04N19/176 , H04N19/70
Abstract: A video processing method is described. The method includes performing a conversion between a video region of a video and a coded representation of the video, wherein the performing of the conversion includes configuring, based on a partition type of the video region, a context model for coding a first bin, the first bin and a second bin included in 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 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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公开(公告)号：US20220150544A1
公开(公告)日：2022-05-12
申请号：US17582739
申请日：2022-01-24
Inventor： Zhipin DENG , Li ZHANG , Kai ZHANG , Hongbin LIU
IPC: H04N19/61 , H04N19/176 , H04N19/167 , H04N19/119 , H04N19/109 , H04N19/70 , H04N19/11 , H04N19/107
Abstract: Methods, systems, and devices for coding or decoding video wherein the picture partition mode is based on block size are described. An example method for video processing includes using a dimension of a virtual pipeline data unit (VPDU) used for a conversion between a video comprising one or more video regions comprising one or more video blocks and a bitstream representation of the video to perform a determination of whether a ternary-tree (TT) or a binary tree (BT) partitioning of a video block of the one or more video blocks is enabled, and performing, based on the determination, the conversion, wherein the dimension is equal to VSize in luma samples, wherein dimensions of the video block are CtbSizeY in luma samples, wherein VSize=min(M, CtbSizeY), and wherein M is a positive integer.
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