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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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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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Patent Agency Ranking
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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公开(公告)号：US20240137526A1
公开(公告)日：2024-04-25
申请号：US18397033
申请日：2023-12-27
Inventor： Ye-Kui Wang , Yang Wang , Li Zhang
IPC: H04N19/157 , H04N19/124 , H04N19/132 , H04N19/172 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/70
CPC classification number: H04N19/157 , H04N19/124 , H04N19/132 , H04N19/172 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/70
Abstract: A mechanism for processing video data is disclosed. A value of an annotated region (AR) object label index of an i-th AR object index (ar_object_label_idx[ar_object_idx[i]]) syntax element is determined. The ar_object_label_idx[ar_object_idx[i]] syntax element is specified to be in a range of N to M, where N and M are integers and N is less than M. A conversion is performed between a visual media data and a bitstream based on the ar_object_label_idx[ar_object_idx[i]] syntax element.
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39.发明公开公开(公告)号：US20240129488A1
公开(公告)日：2024-04-18
申请号：US18397046
申请日：2023-12-27
Inventor： Ye-Kui Wang , Yang Wang , Li Zhang
IPC: H04N19/157 , H04N19/124 , H04N19/132 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/70
CPC classification number: H04N19/157 , H04N19/124 , H04N19/132 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/70
Abstract: A mechanism for processing video data is disclosed. A value of an i-th depth nonlinear representation model (depth_nonlinear_representation_model[i]) syntax element is determined. The depth_nonlinear_representation_model[i] syntax element is specified to be in a range of A to B, where A and B are integers and A is less than B. A conversion is performed between a visual media data and a bitstream based on the depth_nonlinear_representation_model[i] syntax element.
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公开(公告)号：US20240098266A1
公开(公告)日：2024-03-21
申请号：US18502724
申请日：2023-11-06
Inventor： Yang Wang , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/132 , H04N19/105 , H04N19/176 , H04N19/186 , H04N19/46
CPC classification number: H04N19/132 , H04N19/105 , H04N19/176 , H04N19/186 , H04N19/46
Abstract: A method of video processing is provided. The method includes: determining, for a conversion between a video block of a video and a bitstream of the video, a selected neighboring sample list according to an order, wherein the order specifies that above neighboring samples are added to the selected neighboring sample list before left neighboring samples, and performing the conversion based on a cross-component linear model, wherein parameters of a cross-component linear model is derived using a derivation method that is based on samples from the selected neighboring sample list.
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