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公开(公告)号：US20240422350A1
公开(公告)日：2024-12-19
申请号：US18813993
申请日：2024-08-23
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/593 , H04N19/11 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/186
Abstract: A method of video processing is described. The method includes: determining, based on a coding mode of a current video block of a video, whether a position dependent intra prediction combination (PDPC) method is used for coding the current video block based on a first rule, and performing a conversion between the current video block and a coded representation of the video according to the determining, wherein the PDPC method combines neighboring samples with a prediction signal of the current video block to generate a refined prediction signal of the current video block.
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公开(公告)号：US12160573B2
公开(公告)日：2024-12-03
申请号：US17538873
申请日：2021-11-30
Inventor： Li Zhang , Hongbin Liu , Kai Zhang , Yue Wang
IPC: H04N19/119 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186
Abstract: Intra block copy with triangular partitions is described. One example method includes determining for a conversion between a block of a video and a bitstream representation of the block, that at least one of intra block copy (IBC) mode, intra mode, inter mode and palette mode is applied to multiple sub-regions of the block, wherein the block is split into two or multiple triangular or wedgelet sub-regions; and performing the conversion based on the determination.
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公开(公告)号：US12155825B2
公开(公告)日：2024-11-26
申请号：US18169442
申请日：2023-02-15
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/117 , H04N19/132 , H04N19/174 , H04N19/176 , H04N19/82
Abstract: An example method of video processing includes determining, for a conversion between a current video unit of a video and a bitstream representation of the video, availability of one or more samples in a first neighboring region of the current block for a coding process of the conversion independently from information of a second neighboring region of the current block. The second neighboring region is adjacent to the first neighboring region, and the one or more samples are padded in case determined to be unavailable. The method includes performing the conversion based on the determining.
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公开(公告)号：US12143641B2
公开(公告)日：2024-11-12
申请号：US17897835
申请日：2022-08-29
Inventor： Ye-kui Wang , Zhipin Deng , Li Zhang , Kai Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/105 , H04N19/117 , H04N19/169 , H04N19/172 , H04N19/174 , H04N19/189 , H04N19/196 , H04N19/46 , H04N19/58 , H04N19/635 , H04N19/82 , H04N19/86 , H04N19/127
Abstract: A video processing method is provided. The method includes: performing a conversion between a video including a plurality of pictures each including at least one slice and a bitstream of the video, wherein the bitstream conforms to a format rule. The format rule specifies that a first flag in the bitstream indicates whether a picture header syntax structure of a picture is included in a slice header of a slice of the picture; and responsive to any of six flags in a picture parameter set associated with the picture is equal to 1, the first flag is equal to 0.
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公开(公告)号：US12143632B2
公开(公告)日：2024-11-12
申请号：US17942552
申请日：2022-09-12
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/593 , H04N19/70
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 encoding a current video block of a video using a matrix 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 selectively followed by an upsampling operation; and adding, to a coded representation of the current video block, a syntax element indicative of applicability of the MIP mode to the current video block using arithmetic coding in which a context for the syntax element is derived based on a rule.
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Patent Agency Ranking
公开(公告)号：US12143627B2
公开(公告)日：2024-11-12
申请号：US18352628
申请日：2023-07-14
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/52 , H04N19/126 , H04N19/176
Abstract: Devices, systems, and methods for asymmetric weighted bi-predictive merging in video coding are described. In a representative aspect, a method for decoding video data includes determining that a current video block of the video data is predicted from an asymmetric bi-predictive merge candidate, where different weights are used for a first reference block and a second reference block, and making, based on the determination, a determination between enabling and disabling a coding tool for the current video block. In a case that the current video block is predicted from an asymmetric bi-predictive merge candidate, the coding tool is not applied to the current video block.
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公开(公告)号：US20240364878A1
公开(公告)日：2024-10-31
申请号：US18759646
申请日：2024-06-28
Inventor： Wenbin YIN , Kai Zhang , Yue Li , Hongbin Liu , Li Zhang
IPC: H04N19/117 , H04N19/139 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/82
CPC classification number: H04N19/117 , H04N19/139 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/82
Abstract: Embodiments of the disclosure provide a solution for video processing. A method for video processing is proposed. The method includes: determining, during a conversion between a video unit of a video and a bitstream of the video unit, information of a previously coded picture associated with the video unit; during a filtering process, filtering at least one sample in a current picture associated with the video unit based on the information; and performing the conversion based on the filtered at least one sample.
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公开(公告)号：US12132889B2
公开(公告)日：2024-10-29
申请号：US18190477
申请日：2023-03-27
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/105 , H04N19/109 , H04N19/159 , H04N19/176 , H04N19/513 , H04N19/52 , H04N19/577
CPC classification number: H04N19/105 , H04N19/109 , H04N19/159 , H04N19/176 , H04N19/513 , H04N19/52 , H04N19/577
Abstract: A video coding or decoding method includes using history-based motion vector prediction (HMVP) for conversion between multiple video blocks including a current block of video and a bitstream representation of the multiple video blocks such that for a uni-predicted block that for which a single reference picture is used for motion compensation, refraining from updating a look-up table for HMVP candidates for the uni-predicted block. The video coding or decoding method further includes performing the conversion using look-up tables for the multiple video blocks.
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公开(公告)号：US20240357172A1
公开(公告)日：2024-10-24
申请号：US18763668
申请日：2024-07-03
Inventor： Yingzhan XU , Wenyi Wang , Kai Zhang , Li Zhang
IPC: H04N19/597 , H04N19/159
CPC classification number: H04N19/597 , H04N19/159
Abstract: Embodiments of the present disclosure provide a solution for point cloud coding. A method for point cloud coding comprises: determining, for a current point in a current point cloud (PC) sample of a point cloud sequence during a conversion between the current PC sample and a bitstream of the point cloud sequence, at least one neighboring point in a set of reference PC samples of the current PC sample based on a plurality of search ranges; and performing the conversion based on the at least one neighboring point, wherein the set of reference PC samples comprise a first reference PC sample and a second reference PC sample different from the first reference PC sample, the plurality of search ranges comprise a first search range for the first reference PC sample and a second search range for the second reference PC sample that is different from the first search range
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公开(公告)号：US12126825B2
公开(公告)日：2024-10-22
申请号：US18342514
申请日：2023-06-27
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/176 , H04N19/44 , H04N19/513 , H04N19/56
CPC classification number: H04N19/513 , H04N19/176 , H04N19/44 , H04N19/56
Abstract: Methods of enabling and disabling a decoder-side motion vector refinement (DMVR) video decoder and/or encoder are described. One example method includes determining a width (W) and a height (H) of a video block, making a determination, based on a condition of the video block, between enabling and disabling a decoder side motion vector refinement step for a conversion between the video block and a coded representation of the video block, in a case that the determination is enabling, performing the conversion by enabling the decoder side motion vector refinement step; and in a case that the determination is disabling, performing the conversion by disabling the decoder side motion vector refinement step, wherein the decoder side motion vector refinement step includes refining value of a motion vector signaled in the coded representation and using the refined value during the conversion.
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