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公开(公告)号：US11968361B2
公开(公告)日：2024-04-23
申请号：US17523131
申请日：2021-11-10
Inventor： Li Zhang , Weijia Zhu , Kai Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/82
CPC classification number: H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/82
Abstract: In an exemplary aspect, a method for visual media processing includes identifying a boundary at a vertical edge and/or a horizontal edge of two video blocks; calculating a boundary strength of a filter based on at least one of the two video blocks crossing a vertical edge or a horizontal edge is coded using a combined intra-inter prediction (CIIP) mode; deciding whether to turn on or off the filter; selecting a strength of the filter in case the filter is turned on; and performing, based on the selecting, a deblocking filter (DB) process to the video blocks.
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公开(公告)号：US20240121410A1
公开(公告)日：2024-04-11
申请号：US18528070
申请日：2023-12-04
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/176 , H04N19/105 , H04N19/107 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/583
CPC classification number: H04N19/176 , H04N19/105 , H04N19/107 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/583
Abstract: Devices, systems and methods for applying intra-block copy (IBC) in video coding are described. In general, methods for integrating IBC with existing motion compensation algorithms for video encoding and decoding are described. In a representative aspect, a method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using a motion compensation algorithm, and encoding, based on the determining, the current block by selectively applying an intra-block copy to the current block. In a representative aspect, another method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using an intra-block copy, and encoding, based on the determining, the current block by selectively applying a motion compensation algorithm to the current block.
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公开(公告)号：US11956448B2
公开(公告)日：2024-04-09
申请号：US18076869
申请日：2022-12-07
Inventor： Kai Zhang , Yuwen He , Li Zhang , Hongbin Liu , Tianliang Fu , Junru Li , Siwei Ma
IPC: H04N19/157 , H04N19/176 , H04N19/186
CPC classification number: H04N19/157 , H04N19/176 , H04N19/186
Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of processing video data includes determining, for a conversion between a video block of a video and a bitstream of the video, a gradient of a prediction vector at a sub-block level for the video block according to a rule, wherein the rule specifies to use a same gradient value is assigned for all samples within a sub-block of the video block; and performing the conversion based on the determining.
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公开(公告)号：US11956439B2
公开(公告)日：2024-04-09
申请号：US17977471
申请日：2022-10-31
Inventor： Zhipin Deng , Li Zhang , Hongbin Liu , Kai Zhang , Jizheng Xu
IPC: H04N19/132 , H04N19/105 , H04N19/176 , H04N19/186 , H04N19/30 , H04N19/70
CPC classification number: H04N19/132 , H04N19/105 , H04N19/176 , H04N19/186 , H04N19/30 , 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. The bitstream representation is configured according to a format rule. 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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公开(公告)号：US11956432B2
公开(公告)日：2024-04-09
申请号：US17723175
申请日：2022-04-18
Inventor： Kai Zhang , Zhipin Deng , Hongbin Liu , Li Zhang , Jizheng Xu
IPC: H04N19/00 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/70 , H04N19/82
CPC classification number: H04N19/119 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/70 , H04N19/82
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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Patent Agency Ranking
56.发明授权公开(公告)号：US11956431B2
公开(公告)日：2024-04-09
申请号：US17358700
申请日：2021-06-25
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/119 , H04N19/105 , H04N19/139 , H04N19/157 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/52 , H04N19/70
CPC classification number: H04N19/119 , H04N19/105 , H04N19/139 , H04N19/157 , H04N19/176 , H04N19/52 , H04N19/70 , H04N19/172 , H04N19/174
Abstract: A method for processing a video includes performing a determination, by a processor, that a first video block is partitioned to include a first prediction portion that is non-rectangular and non-square; adding a first motion vector (MV) prediction candidate associated with the first prediction portion to a motion candidate list associated with the first video block, wherein the first MV prediction candidate is derived from a sub-block MV prediction candidate; and performing further processing of the first video block using the motion candidate list.
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公开(公告)号：US20240107036A1
公开(公告)日：2024-03-28
申请号：US18508721
申请日：2023-11-14
Inventor： Kai Zhang , Zhipin Deng , Hongbin Liu , Li Zhang , Jizheng Xu , Ye-kui Wang
IPC: H04N19/186 , H04N19/132 , H04N19/159 , H04N19/167 , H04N19/169 , H04N19/176 , H04N19/70
CPC classification number: H04N19/186 , H04N19/132 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/1883 , H04N19/70
Abstract: A method of video processing is provided that includes performing a conversion between a block of a video and a bitstream of the video. The bitstream conforms to a formatting rule specifying that a size of a merge estimation region (MER) is indicated in the bitstream and the size of the MER is based on a dimension of a video unit. The MER comprises a region used for deriving a motion candidate for the conversion.
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公开(公告)号：US20240107007A1
公开(公告)日：2024-03-28
申请号：US18525099
申请日：2023-11-30
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/139 , H04N19/159 , H04N19/17 , H04N19/176 , H04N19/189 , H04N19/46 , H04N19/52
CPC classification number: H04N19/105 , H04N19/139 , H04N19/159 , H04N19/17 , H04N19/176 , H04N19/189 , H04N19/46 , H04N19/52
Abstract: Devices, systems and methods for digital video coding, which include sub-block based inter prediction methods, are described. An exemplary method for video processing includes determining, for a conversion between a current block of video and a bitstream representation of the video, a maximum number of candidates in a sub-block based merge candidate list and/or whether to add sub-block based temporal motion vector prediction (SbTMVP) candidates to the sub-block based merge candidate list based on whether temporal motion vector prediction (TMVP) is enabled for use during the conversion or whether a current picture referencing (CPR) coding mode is used for the conversion, and performing, based on the determining, the conversion.
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公开(公告)号：US20240098260A1
公开(公告)日：2024-03-21
申请号：US18503773
申请日：2023-11-07
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/117 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/82 , H04N19/96
CPC classification number: H04N19/117 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/82 , H04N19/96
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 comprises 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：US11936874B2
公开(公告)日：2024-03-19
申请号：US18073191
申请日：2022-12-01
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/132 , G06F7/78 , G06F17/16 , H04N19/105 , H04N19/159 , H04N19/176
CPC classification number: H04N19/132 , G06F7/78 , G06F17/16 , H04N19/105 , H04N19/159 , H04N19/176
Abstract: Devices, systems, and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a conversion between a current video block of a video and a bitstream representation of the current video block using a matrix based intra prediction (MIP) mode in which a prediction block of the current video block is determined by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and followed by an upsampling operation, where the upsampling operation is performed, in both a vertical direction and a horizontal direction in a fixed order, on samples obtained from the matrix vector multiplication operation.
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