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公开(公告)号：US20250063192A1
公开(公告)日：2025-02-20
申请号：US18913903
申请日：2024-10-11
Inventor： Na ZHANG , Jizheng XU , Kai ZHANG , Mehdi SALEHIFAR , Li ZHANG
IPC: H04N19/513 , H04N19/105 , H04N19/139 , H04N19/196 , H04N19/58
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, for a conversion between a current video block of a video and a bitstream of the video, that a first prediction mode is applied to the current block, reordering, in the first prediction mode, at least a first set of block vector difference (BVD) candidates of multiple BVD candidates corresponding to a first base candidate according to at least one criterion; deriving, based on the reordered BVD candidates, a block vector for the current video block; and performing the conversion based on the motion information.
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公开(公告)号：US20240323353A1
公开(公告)日：2024-09-26
申请号：US18732479
申请日：2024-06-03
IPC: H04N19/105 , H04N19/176
CPC classification number: 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: determining, during a conversion between a target video block of a video and a bitstream of the video, a target maximum number from a first maximum number of motion candidates of a candidate type associated with a motion vector (MV) candidate list and a second maximum number of motion candidates of the candidate type associated with a block vector (BV) candidate list; determining a candidate list including motion candidates of the candidate type for the target video block based on the target maximum number; and performing the conversion based on the candidate list.
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公开(公告)号：US20240275941A1
公开(公告)日：2024-08-15
申请号：US18615916
申请日：2024-03-25
IPC: H04N19/103 , H04N19/176
CPC classification number: H04N19/103 , H04N19/176
Abstract: A method for video processing comprises: determining, during a conversion between a target video block of a video and a bitstream of the video, an intra block copy (IBC)-based mode to be applied for the target video block based on at least one of: a mode based on affine motion compensated prediction, an affine IBC merge mode with block vector differences (MBVD), an intra template matching for IBC mode (TM_IBC), wherein a derived block vector (BV) is used as base candidates for the MBVD, an intra template matching for IBC mode (TM_IBC), wherein a derived BV is used as BV prediction candidate for IBC non-merge mode, an IBC prediction mode based on multi-hypothesis, a mode based on overlapped block motion compensation (OBMC), a mode based on geometric partitioning with the MBVD, or a mode based on geometric partitioning with TM; and performing the conversion based on the IBC-based mode.
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公开(公告)号：US20240267533A1
公开(公告)日：2024-08-08
申请号：US18566956
申请日：2022-06-02
IPC: H04N19/156 , H04N19/154 , H04N19/176 , H04N19/184
CPC classification number: H04N19/156 , H04N19/154 , H04N19/176 , H04N19/184
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a current video block of a video and a bitstream of the video, a cost based on at least two error metrics associated with two target blocks of the video, the cost indicting a degree of distortion between the two target blocks; refining coding data of the current video block based on the cost and the two target blocks; and performing the conversion based on the refined coding data. Compare with the conventional solution, the proposed method can advantageously improve the coding quality and the coding efficiency.
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公开(公告)号：US20240259608A1
公开(公告)日：2024-08-01
申请号：US18633278
申请日：2024-04-11
Inventor： Mehdi SALEHIFAR , Yuwen HE , Kai ZHANG , Na ZHANG , Li ZHANG
IPC: H04N19/88 , H04N19/176
CPC classification number: H04N19/88 , H04N19/176
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing comprises: reordering, during a conversion between a current video block of a video and a bitstream of the video, a plurality of candidate signs of a motion vector difference (MVD) for a motion candidate of the current video block; and performing the conversion based on the reordered plurality of candidate signs. Compared with the conventional solution, the proposed method can advantageously improve coding efficiency and coding quality.
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Patent Agency Ranking
公开(公告)号：US20240187567A1
公开(公告)日：2024-06-06
申请号：US18286212
申请日：2022-04-09
Inventor： Na ZHANG , Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Yang WANG
IPC: H04N19/105 , H04N19/139 , H04N19/176 , H04N19/186
CPC classification number: H04N19/105 , H04N19/139 , H04N19/176 , H04N19/186
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a current block of a video and a bitstream, reference samples of a sub-template of the current block based on a first set of reference samples of the sub-template in a first reference list and a second set of reference samples of the sub-template in a second reference list; and determining a target motion candidate list based on the reference samples of the sub-template. Compared with the conventional solution, the proposed method can advantageously improve the coding efficiency.
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公开(公告)号：US20210360232A1
公开(公告)日：2021-11-18
申请号：US17389037
申请日：2021-07-29
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Jizheng XU , Yue WANG , Na ZHANG
IPC: H04N19/107 , H04N19/176 , H04N19/96
Abstract: The present application relates to harmonization between different video process mode. A method for processing video includes: determining, during a conversion between a first block in a video data and a bitstream representation of the first block, one or more coded modes of one or more second blocks; determining, based on the one or more coded modes of the one or more second blocks, a coded mode constraint of the first block; and performing, at least by applying the coded mode constraint of the first block, the conversion; wherein the one or more second blocks comprise at least one of an adjacent block, a non-adjacent block, and a reference block of the first block.
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公开(公告)号：US20210258575A1
公开(公告)日：2021-08-19
申请号：US17244533
申请日：2021-04-29
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG , Na ZHANG
IPC: H04N19/119 , H04N19/105 , H04N19/46 , H04N19/176
Abstract: Devices, systems and methods for digital video coding, which include geometric partitioning, are described. An exemplary method for video processing includes making a decision, based on a priority rule, regarding an order of insertion of motion candidates into a motion candidate list for a conversion between a current block of video and a bitstream representation of the video, wherein the current block is coded using a geometry partition mode; and performing, based on the decision and the motion candidate list, the conversion.
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公开(公告)号：US20250150604A1
公开(公告)日：2025-05-08
申请号：US19017255
申请日：2025-01-10
IPC: H04N19/176 , H04N19/139 , H04N19/159 , H04N19/52
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, for a conversion between a current video block of a video and a bitstream of the video, a sign prediction of a block vector difference (BVD) of the current video block; determining the BVD at least based on the sign prediction of the BVD; and performing the conversion based on the BVD.
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公开(公告)号：US20250056065A1
公开(公告)日：2025-02-13
申请号：US18289975
申请日：2022-05-12
Inventor： Kai ZHANG , Li ZHANG , Zhipin DENG , Na ZHANG , Yang WANG
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a current video block of a video and a bitstream of the video, whether coding information of a reference video block is used to code a first piece of motion information of the current video block based on a coding pattern applied to the reference video block; and performing the conversion based on the determining. The method in accordance with the first aspect of the present disclosure improves the coding process of the current video block. Compared with the conventional solution, the proposed method can advantageously improve the coding efficiency and avoid the undesirable latency.
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