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公开(公告)号：US20250150575A1
公开(公告)日：2025-05-08
申请号：US18991172
申请日：2024-12-20
Inventor： Mehdi SALEHIFAR , Yuwen He , Kai Zhang , Na Zhang , Li Zhang
IPC: H04N19/105 , H04N19/139 , H04N19/176 , H04N19/513
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, for a conversion between a current video block of a video and a bitstream of the video, a motion candidate list for the current video block; determining, based on a similarity metric between a first motion candidate and a second motion candidate in the motion candidate list, whether to update the motion candidate list; and performing the conversion based on the determination.
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公开(公告)号：US20250142121A1
公开(公告)日：2025-05-01
申请号：US19009860
申请日：2025-01-03
Inventor： Yingzhan XU , Wenyi Wang , Kai Zhang , Li Zhang
IPC: H04N19/597 , H04N19/132 , H04N19/137 , H04N19/147 , H04N19/184 , H04N19/537
Abstract: Embodiments of the present disclosure provide a solution for point cloud coding. A method for point cloud coding is proposed. The method comprises: obtaining, for a conversion between a current point cloud (PC) sample of a point cloud sequence and a bitstream of the point cloud sequence, target information regarding whether an attribute inter prediction is enabled for the current PC sample, the target information being determined based on at least one of rate information or distortion information associated with coding at least one target PC sample with the attribute inter prediction, wherein the at least one target PC sample comprises at least one of: the current PC sample, or at least one PC sample of the point cloud sequence coded before the current PC sample; and performing the conversion based on the target information.
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公开(公告)号：US20250142054A1
公开(公告)日：2025-05-01
申请号：US19010549
申请日：2025-01-06
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
Abstract: An example method of video processing includes determining, for a conversion between a current picture of a video and a coded representation of the video, a position of a reference sample in a reference picture that is associated with the current picture based on a top-left position of a window of a picture. The picture includes at least the current picture or the reference picture, and the window is subject to a processing rule during the conversion. The method also includes performing the conversion based on the determining.
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公开(公告)号：US12278949B2
公开(公告)日：2025-04-15
申请号：US18321426
申请日：2023-05-22
Inventor： Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Weijia Zhu , Yue Wang
IPC: H04N19/105 , H04N19/176 , H04N19/186 , H04N19/189
Abstract: A method of video processing includes determining, for a conversion between a video component of a video comprising a current video block and a bitstream representation of the video, that a first coding tool is used based on a rule for the current video block; and performing the conversion according to the determining, wherein the first coding tool includes transforming a representation of a visual signal between two color spaces, and where the rule specifies that a first quantization parameter (QP) offset for a luma channel of the current video block is equal to K1 and a second QP offset for a first chroma channel of the current video block is K1+O, where K1 and O are integers.
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公开(公告)号：US12273525B2
公开(公告)日：2025-04-08
申请号：US17652204
申请日：2022-02-23
Inventor： Jizheng Xu , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/00 , H04N19/105 , H04N19/132 , H04N19/169 , H04N19/176 , H04N19/52 , H04N19/56 , H04N19/70
Abstract: A method of video processing is described. The method of video processing includes: performing a conversion between a video comprising video blocks and a coded representation of the video; wherein the coded representation conforms to a format rule, wherein the format rule specifies that context adaptive coding of a block vector predictor (BVP) index of a first video block coded using a block vector (BV) prediction mode and an index for inter mode coding used for coding a second video block is performed by sharing a same context; wherein the BVP index is to an entry in a history-based motion vector predictor list used for generating a block vector predictor for the first video block.
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Patent Agency Ranking
公开(公告)号：US12262006B2
公开(公告)日：2025-03-25
申请号：US17824386
申请日：2022-05-25
IPC: H04N19/117 , H04N19/119 , H04N19/176 , H04N19/186
Abstract: A method of video processing, including performing a conversion between a video block of a video component of a video and a bitstream of the video, where the video block includes sub-blocks, where a filtering tool is used during the conversion according to a rule, and where the rule specifies that the filtering tool is applied by using a single offset for all samples of each sub-block of the video block.
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公开(公告)号：US12256107B2
公开(公告)日：2025-03-18
申请号：US18516493
申请日：2023-11-21
Inventor： Zhipin Deng , Li Zhang , Ye-kui Wang , Kai Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/117 , H04N19/169 , H04N19/186
Abstract: 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 and a bitstream of the video according to a format rule. The format rule specifies that constraints on values of one or more first syntax elements in an adaptation parameter set are defined based on semantics of second syntax elements in a picture header and/or a slice header when a picture or a slice refers to the adaptation parameter set.
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公开(公告)号：US12238306B2
公开(公告)日：2025-02-25
申请号：US18528017
申请日：2023-12-04
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/52 , H04N19/119 , H04N19/136 , H04N19/176 , H04N19/186 , H04N19/55
Abstract: Devices, systems and methods for sub-block based prediction are described. In a representative aspect, a method for video encoding includes partitioning, based on a first rule, a luma component of a block of video data into a first set of sub-blocks. The method also includes partitioning, based on a second rule, a first chroma component of the block of video data into a second set of sub-blocks. The first and the second set of sub-blocks include different numbers of sub-blocks. The method also includes performing a subsequent motion prediction based on the first and the second set of sub-blocks.
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公开(公告)号：US12238305B2
公开(公告)日：2025-02-25
申请号：US18492937
申请日：2023-10-24
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/00 , H04N19/117 , H04N19/159 , H04N19/186 , 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：US20250047891A1
公开(公告)日：2025-02-06
申请号：US18905949
申请日：2024-10-03
Inventor： Zhipin DENG , Kai Zhang , Li Zhang
IPC: H04N19/513 , H04N19/105 , H04N19/176
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, for a conversion between a current video block of a video and a bitstream of the video, a first motion vector (MV) for a target video block, the target video block being determined by applying a sample adjusting process to a plurality of samples of the current video block; adjusting the first MV based on a second MV generated for the target video block; and performing the conversion based on the adjusted first MV.
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