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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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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：US11870979B2
公开(公告)日：2024-01-09
申请号：US17886084
申请日：2022-08-11
Inventor： Zhipin Deng , Li Zhang , Kai Zhang , Ye-kui Wang , Kui Fan
IPC: H04N19/30 , H04N19/52 , H04N19/70 , H04N19/82 , H04N19/105 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/139 , H04N19/167 , H04N19/172 , H04N19/174 , H04N19/184 , H04N19/196 , H04N19/547 , H04N19/573
CPC classification number: H04N19/105 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/139 , H04N19/167 , H04N19/172 , H04N19/174 , H04N19/184 , H04N19/196 , H04N19/30 , H04N19/52 , H04N19/547 , H04N19/573 , H04N19/70 , H04N19/82
Abstract: Methods, apparatus, systems for video processing, including video encoding or video decoding are described. One example method includes performing a conversion between a video comprising a video picture that includes a video slice and a bitstream of the video. The bitstream conforms to a format rule specifying that, in case a slice type of the video slice is type P and temporal motion vector prediction is enabled, usage of reference picture resampling (RPR) for a reference picture in a collocated reference picture list is disabled. The reference picture is indicated by a reference index of a collocated picture of the video slice used for the temporal motion vector prediction.
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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：US11863762B2
公开(公告)日：2024-01-02
申请号：US17992246
申请日：2022-11-22
Inventor： Ye-kui Wang , Zhipin Deng , Kai Zhang , Li Zhang
IPC: H04N19/169 , H04N19/70 , H04N19/96 , H04N19/174 , H04N19/172 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/105
CPC classification number: H04N19/172 , H04N19/105 , H04N19/174 , H04N19/184 , H04N19/186 , H04N19/188 , H04N19/46 , H04N19/70 , H04N19/96
Abstract: Embodiments for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video having one or more layers having one or more video pictures having one or more subpictures and a bitstream of the video according to a rule, wherein the rule defines network abstraction layer (NAL) units to be extracted from a bitstream during a sub-bitstream extraction process to output a sub-bitstream, wherein the rule further specifies that one or more inputs to the sub-bitstream extraction process include a target output layer set (OLS) index (targetOlsIdx) that identifies an OLS index of a target OLS and is equal to an index to a list of OLSs specified by a video parameter set, and wherein the one or more inputs satisfy a set of conditions.
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Patent Agency Ranking
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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公开(公告)号：US20230396809A1
公开(公告)日：2023-12-07
申请号：US18450647
申请日：2023-08-16
Inventor： Zhipin Deng , Li Zhang , Ye-Kui Wang , Kai Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/46
CPC classification number: H04N19/70 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/46
Abstract: Systems, methods, and apparatus for video processing are described. The video processing may include video encoding, video decoding or video transcoding. One example method of video processing includes performing a conversion between a video including one or more video regions and a bitstream of the video according to a format rule. The format rule specifies that a variable X indicates whether B slice is allowed or used in a video region. The format rule further specifies that the variable X is based on values of a reference picture list information present flag and/or a field indicating a number of entries in a reference picture list syntax structure.
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公开(公告)号：US20230396796A1
公开(公告)日：2023-12-07
申请号：US18452394
申请日：2023-08-18
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Na Zhang , Yang Wang
IPC: H04N19/563 , H04N19/176
CPC classification number: H04N19/563 , H04N19/176
Abstract: A method implemented by a video coding apparatus. The method includes determining a padding dimension for a video unit of a video according to a characteristic of the video unit, where the padding dimension is a horizontal padding dimension (padW) or a vertical padding dimension (padH). The method further includes converting between the video unit of the video and a bitstream in accordance with the padding dimension determined.
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