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公开(公告)号：US11909951B2
公开(公告)日：2024-02-20
申请号：US17374160
申请日：2021-07-13
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/103 , H04N19/117 , H04N19/157 , H04N19/176 , H04N19/184 , H04N19/159 , H04N19/52 , H04N19/513
CPC classification number: H04N19/103 , H04N19/117 , H04N19/157 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/52 , H04N19/513
Abstract: A method for processing video data is provided to include: determining whether a sharing of merge list information is enabled for a merge sharing node that corresponds to an ancestor node in a coding unit split tree to allow leaf coding units of the ancestor node in the coding unit split tree to use the merge list information; and performing a conversion between a current video block of a video and a bitstream of the video based on the determining.
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公开(公告)号：US20240056599A1
公开(公告)日：2024-02-15
申请号：US18486641
申请日：2023-10-13
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/52 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/51 , H04N19/593
CPC classification number: H04N19/52 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/51 , H04N19/593
Abstract: The present disclosure relates to interaction between intra block copy mode and inter prediction tools. A method for video processing includes determining that an intra block copy (IBC) mode is applied to a current video block of a video. In the IBC mode, at least one reference picture used by the current video block is a current picture where the current video block is located. The method also includes making a decision regarding a disabling of a specific coding mode for the current block. The specific coding mode uses a motion vector and a non-current picture to derive a prediction of a video block. The method further includes performing, based on the decision, a conversion between the current video block and the bitstream representation.
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公开(公告)号：US20240056568A1
公开(公告)日：2024-02-15
申请号：US18489195
申请日：2023-10-18
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 including 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：US20240022754A1
公开(公告)日：2024-01-18
申请号：US18472353
申请日：2023-09-22
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/50 , H04N19/117 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/157 , H04N19/593
CPC classification number: H04N19/50 , H04N19/117 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/157 , H04N19/593
Abstract: A method for video bitstream processing includes generating, using a first video block derived from a third video block of a first component and having a first size, a prediction block for a second video block of a video related to a second component, where the first component is different from the second component, and where the second video block has a second size that is different from the first size. The method also includes performing, using the prediction block, a conversion between the second video block and a bitstream representation of the video according to a two-step cross-component prediction mode (TSCPM).
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公开(公告)号：US11877002B2
公开(公告)日：2024-01-16
申请号：US17457868
申请日：2021-12-06
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/56 , H04N19/52 , H04N19/159 , H04N19/176 , H04N19/137
CPC classification number: H04N19/52 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/56
Abstract: A method of video processing is provided to include maintaining one or more tables, wherein each table includes one or more motion candidates and each motion candidate is associated with corresponding motion information; performing a conversion between a current block and a bitstream representation of a video including the current block by using motion information in a table; and updating, after performing of the conversion, one or more tables based on M sets of additional motion information associated with the current block, M being an integer.
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Patent Agency Ranking
公开(公告)号：US11871006B2
公开(公告)日：2024-01-09
申请号：US17505227
申请日：2021-10-19
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/159 , H04N19/172 , H04N19/176 , H04N19/96 , H04N19/117 , H04N19/132 , H04N19/186 , H04N19/105 , H04N19/513
CPC classification number: H04N19/159 , H04N19/105 , H04N19/117 , H04N19/132 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/513 , H04N19/96
Abstract: Devices, systems and methods for digital video coding, which includes inter prediction with refinement, are described. An exemplary method of video processing includes determining to use, for a conversion between a current block of a video and a bitstream representation of the video, a first linear optimization model for the conversion using a first coding mode, the first linear optimization model being derived from a second linear optimization model that is used for the conversion using a second coding mode, and performing, based on the determining, the conversion. Another exemplary method of video processing includes determining to use, for a conversion between a current block of a video and a bitstream representation of the video, a gradient value computation algorithm for a bi-directional optical flow tool, and performing, based on the determining, the conversion.
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公开(公告)号：US11863771B2
公开(公告)日：2024-01-02
申请号：US17398887
申请日：2021-08-10
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/00 , H04N19/436 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/51
CPC classification number: H04N19/436 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/51
Abstract: A method for processing a video includes maintaining one or more tables, wherein each table includes motion candidates derived from previously processed video blocks that are processed prior to a first video block of a video; deriving motion information for the first video block; applying refinement to the motion information when at least one decoder side motion vector derivation (DMVD) technologies is enabled; performing a conversion between a bitstream representation of the first video block and the first video block using the refined motion information; and determining, whether to use the refined motion information or un-refined motion information for updating one or more tables.
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公开(公告)号：US11856211B2
公开(公告)日：2023-12-26
申请号：US17319961
申请日：2021-05-13
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/423 , H04N19/159 , H04N19/176 , H04N19/137 , H04N19/30 , H04N19/513 , H04N19/167 , H04N19/196 , H04N19/52
CPC classification number: H04N19/423 , H04N19/105 , H04N19/137 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/196 , H04N19/30 , H04N19/513 , H04N19/52
Abstract: Usage for History-based affine parameters is described. In an exemplary aspect, a method for video processing includes deriving, for a conversion between a current block of video and a bitstream representation of the current block, affine related information associated with affine model for the current block based on affine parameters stored in a buffer for storing affine related information of blocks coded prior the current block; and performing the conversion by using the affine related information.
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公开(公告)号：US11849126B2
公开(公告)日：2023-12-19
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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公开(公告)号：US11843798B2
公开(公告)日：2023-12-12
申请号：US17523286
申请日：2021-11-10
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/513 , H04N19/51 , H04N19/517 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/186
CPC classification number: H04N19/513 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/51 , H04N19/517
Abstract: A method for video processing is provided to include: determining a motion vector precision of one or more motion vectors related to a current video block of a video; selecting, based on the motion vector precision, a motion vector range; and performing, based on the motion vector range, a conversion between the current video block and a bitstream representation of the video.
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