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公开(公告)号：US11700378B2
公开(公告)日：2023-07-11
申请号：US17847005
申请日：2022-06-22
Inventor： Zhipin Deng , Li Zhang , Hongbin Liu , Kai Zhang , Jizheng Xu , Yang Wang , Yue Wang
IPC: H04N19/176 , H04N19/132 , H04N19/105 , H04N19/137 , H04N19/70
CPC classification number: H04N19/132 , H04N19/105 , H04N19/137 , H04N19/176 , H04N19/70
Abstract: A method of video processing is described. The method includes determining, for a conversion between a current video block of a video and a bitstream representation of the video, an applicability of a geometric partitioning mode based on a rule; and performing the conversion based on the determining, and wherein the rule depends on a block width, a block height, and/or an aspect ratio of the current video block.
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公开(公告)号：US20230081842A1
公开(公告)日：2023-03-16
申请号：US17882590
申请日：2022-08-07
Inventor： Yang Wang , Li Zhang , Hongbin Liu , Kai Zhang , Yue Wang
IPC: H04N19/119 , H04N19/96 , H04N19/176 , H04N19/70
Abstract: BV list construction process of IBC blocks under merge estimation region is described. An example method of video processing includes determining, for a conversion between a current video block of a video and a bitstream of the video, one or more block vector (BV) candidates for the current video block based on a merge estimation region (MER) covering the current video block; adding the one or more BV candidates to a BV list associated with the current video block; and performing the conversion based on the BV list.
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公开(公告)号：US20230073705A1
公开(公告)日：2023-03-09
申请号：US17979949
申请日：2022-11-03
Inventor： Yang Wang , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/176 , H04N19/593 , H04N19/186 , H04N19/184 , H04N19/96
Abstract: A method of video processing includes deriving, for a conversion between a chroma block of a video and a bitstream representation of the video, parameters of a cross-component linear model by using downsampled luma samples that are generated from N above neighboring lines of a collocated luma block of the chroma block using a downsampling filter, where N is a positive integer; and performing the conversion using a predicted chroma block generated using the cross-component linear model.
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公开(公告)号：US12289451B2
公开(公告)日：2025-04-29
申请号：US18519348
申请日：2023-11-27
Inventor： Yang Wang , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/132 , H04N19/105 , H04N19/11 , H04N19/124 , H04N19/136 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/70 , H04N19/80
Abstract: A method of video processing is provided to include determining, for a conversion between a video block of a video and a bitstream of the video, a parameter of a cross-component linear model (CCLM) for the video block according to a rule, and performing the conversion based on the determining, and wherein the rule specifies to use a variable representing a neighbouring luma sample in the determining of the parameter of the CCLM only in case that the variable has a certain value.
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公开(公告)号：US20250119574A1
公开(公告)日：2025-04-10
申请号：US18983615
申请日：2024-12-17
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yang Wang , Jizheng Xu , Yue Wang
IPC: H04N19/139 , H04N19/176
Abstract: Motion compensation along different directions is disclosed. A method for video processing includes determining, for a conversion between a current video block of a video and a bitstream representation of the current video block, optical flow associated with the current video block in an optical flow-based motion refinement process or prediction process. The optical flow is derived along directions that are different from a horizontal direction and/or a vertical direction. The method also includes performing the conversion based on the optical flow.
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Patent Agency Ranking
公开(公告)号：US20250030836A1
公开(公告)日：2025-01-23
申请号：US18902795
申请日：2024-09-30
Inventor： Yang Wang , Kai Zhang , Na Zhang , Li Zhang , Hongbin Liu
IPC: H04N19/105
Abstract: Embodiments of the disclosure provide a solution for video processing. A method for video processing is proposed. The method includes: applying, for a conversion between a video unit of a video and a bitstream of the video unit, a processing procedure to at least one motion candidate in a motion candidate list; reordering at least part of motion candidates in the motion candidate list by applying a first reordering procedure to the motion candidate list after the processing procedure; and performing the conversion based on the reordered motion candidates.
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公开(公告)号：US12132899B2
公开(公告)日：2024-10-29
申请号：US17882590
申请日：2022-08-07
Inventor： Yang Wang , Li Zhang , Hongbin Liu , Kai Zhang , Yue Wang
IPC: H04N19/119 , H04N19/176 , H04N19/70 , H04N19/96
CPC classification number: H04N19/119 , H04N19/176 , H04N19/70 , H04N19/96
Abstract: BV list construction process of IBC blocks under merge estimation region is described. An example method of video processing includes determining, for a conversion between a current video block of a video and a bitstream of the video, one or more block vector (BV) candidates for the current video block based on a merge estimation region (MER) covering the current video block; adding the one or more BV candidates to a BV list associated with the current video block; and performing the conversion based on the BV list.
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公开(公告)号：US20240187569A1
公开(公告)日：2024-06-06
申请号：US18438004
申请日：2024-02-09
IPC: H04N19/105 , H04N19/11 , H04N19/159 , H04N19/176 , H04N19/70
CPC classification number: H04N19/105 , H04N19/11 , H04N19/159 , H04N19/176 , H04N19/70
Abstract: Embodiments of the present disclosure provide a method for video processing. The method comprises: determining, during a conversion between a current chroma block of a video and a bitstream of the video, a set of candidate intra prediction modes (IPMs) for the current chroma block based on a decoder-side derivation of intra prediction mode (DDIPM); constructing an IPM candidate list for the current chroma block based on the set of candidate IPMs; and performing the conversion based on the IPM candidate list. Thereby, the proposed method can advantageously improve coding efficiency and reduce the coding bits while maintaining the coding quality.
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公开(公告)号：US11997270B2
公开(公告)日：2024-05-28
申请号：US17977630
申请日：2022-10-31
Inventor： Yang Wang , Li Zhang , Zhipin Deng , Kai Zhang , Hongbin Liu
IPC: H04N19/119 , H04N19/176 , H04N19/70
CPC classification number: H04N19/119 , H04N19/176 , H04N19/70
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 current block of a video and a bitstream of the video according to a rule. The rule specifies that selection of a context for coding a syntax element specifying whether the block is split horizontally or vertically is based on a number of allowed vertical splits and a number of allowed horizontal splits. The number of allowed vertical splits includes a number of allowed binary vertical splits and a number of allowed ternary vertical splits, and the number of allowed horizontal splits includes a number of allowed binary horizontal splits and a number of allowed ternary horizontal splits.
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公开(公告)号：US11979568B2
公开(公告)日：2024-05-07
申请号：US18090681
申请日：2022-12-29
Inventor： Yang Wang , Hongbin Liu , Li Zhang
IPC: H04N19/00 , H04N19/117 , H04N19/167 , H04N19/186
CPC classification number: H04N19/117 , H04N19/167 , H04N19/186
Abstract: Techniques for implementing adaptive loop filtering are described. One example method of video processing includes making a first determination, for a conversion between a video unit of a video and a bitstream of the video, a first luma adaptive loop filter, ALF, boundary across which a luma adaptive loop filter is selectively applied to a luma component of the video unit and a second luma ALF boundary; making a second determination, from the second luma ALF boundary, a chroma ALF boundary across which a chroma adaptive loop filter is selectively applied for a chroma component of the video unit; and performing the conversion based on the first determination and the second determination.
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