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公开(公告)号：US20240187636A1
公开(公告)日：2024-06-06
申请号：US18284834
申请日：2022-04-08
Inventor： Na ZHANG , Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Yang WANG
IPC: H04N19/52
CPC classification number: H04N19/52
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: constructing, during a conversion between a target block of a video and a bitstream of the video, a list of motion candidates for motion information for the target block; determining a reordering scheme based at least in part on coding information, the reordering scheme indicating whether and/or how at least one motion candidate in the list of motion candidates is to be reordered; generating a target list of motion candidates from the list of motion candidates according to the reordering scheme; and deriving the motion information for the target block from the target list of motion candidates. Compared with the conventional solution, the proposed method can advantageously improve the coding effectiveness and coding efficiency.
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公开(公告)号：US20220078424A1
公开(公告)日：2022-03-10
申请号：US17529533
申请日：2021-11-18
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Na ZHANG , Yue WANG
IPC: H04N19/122 , H04N19/176 , H04N19/593 , H04N19/70 , H04N19/119 , H04N19/11 , H04N19/124
Abstract: Devices, systems and methods for lossless coding for visual media coding are described. An exemplary method for video processing includes determining, at a sub-block level of a current video block comprising multiple sub-blocks, whether a coding mode is enabled for representing a corresponding sub-block in a bitstream representation, where, for a given sub-block with the coding mode enabled, the given sub-block is represented in the coded representation without applying a forward transform or the given sub-block is reconstructed from the coded representation without applying an inverse transform, and performing, based on the determining, a conversion between the current video block of a video and the bitstream representation of the video.
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公开(公告)号：US20220038693A1
公开(公告)日：2022-02-03
申请号：US17494956
申请日：2021-10-06
Inventor： Li ZHANG , Na ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/117 , H04N19/70 , H04N19/186
Abstract: Devices, systems and methods related to management of syntax flags with respect chroma formats in video processing are described. In one representative aspect, a video decoding method includes determining, for a conversion between a video and a coded representation of the video, whether a syntax element associated with an adaptive loop filtering (ALF) operation for a chroma component of the video is included in the coded representation based on a condition. The method also includes performing the conversion according to the determining.
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公开(公告)号：US20250142080A1
公开(公告)日：2025-05-01
申请号：US19009826
申请日：2025-01-03
Inventor： Zhipin DENG , Kai ZHANG , Li ZHANG , Na ZHANG
IPC: H04N19/137 , H04N19/11 , H04N19/176 , H04N19/184 , H04N19/593
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 block of a video and a bitstream of the video, motion information of the current block based on motion information of a neighboring block of the current block and an intra block copy merge mode with block vector difference (IBC-MBVD) mode, the neighboring block being coded with a reconstruction-reordered intra block copy (RRIBC) mode; and performing the conversion based on the motion information of the current block.
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公开(公告)号：US20250126269A1
公开(公告)日：2025-04-17
申请号：US18991081
申请日：2024-12-20
Inventor： Na ZHANG , Jizheng XU , Kai ZHANG , Mehdi SALEHIFAR , Li ZHANG
IPC: H04N19/139 , H04N19/103 , H04N19/147 , 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, for a conversion between the current video block and a bitstream of the video, a target number for a set of motion candidates, the target number being smaller than or equal to an upper limit value; determining, based on the target number and a fast rate distortion optimization (RDO) process, the set of motion candidates from a plurality of motion candidates for an intra block copy (IBC) based mode for coding the current video block; and performing the conversion based on the set of motion candidates.
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Patent Agency Ranking
公开(公告)号：US20250080719A1
公开(公告)日：2025-03-06
申请号：US18286210
申请日：2022-04-08
Inventor： Na ZHANG , Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Yang WANG
IPC: H04N19/105 , H04N19/159 , H04N19/176 , H04N19/52 , H04N19/54
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: constructing a list of merge candidates for a target block of a video in a coding mode based on motion vector difference (MVD); reordering the list of merge candidates for the target block; and performing a conversion between the target block and a bitstream of the video based on the reordered list of merge candidates. Compared with the conventional solution, the proposed method can advantageously improve the coding efficiency.
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公开(公告)号：US20240267512A1
公开(公告)日：2024-08-08
申请号：US18636039
申请日：2024-04-15
IPC: H04N19/105 , H04N19/137 , H04N19/176 , H04N19/88
CPC classification number: H04N19/105 , H04N19/137 , H04N19/176 , H04N19/88
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, during a conversion between a target block of a video and a bitstream of the video, a list of adaptive decoder side motion vector refinement (ADMVR) merge candidates for the target block in an ADMVR merge mode; reordering the list of ADMVR merge candidates; and performing the conversion based on the reordered list of ADMVR merge candidates. Compared with the conventional solution, the proposed method can advantageously improve the coding effectiveness and coding efficiency.
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公开(公告)号：US20240259555A1
公开(公告)日：2024-08-01
申请号：US18622810
申请日：2024-03-29
Inventor： Na ZHANG , Kai ZHANG , Li ZHANG , Jizheng XU
IPC: H04N19/105 , H04N19/132 , H04N19/136 , H04N19/157 , H04N19/176
CPC classification number: H04N19/105 , H04N19/132 , H04N19/136 , H04N19/157 , 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, whether a block vector (BV) candidate of the target video block is valid; in accordance with a determination that the BV candidate is valid, adding the BV candidate in an intra block copy (IBC) candidate list; and performing the conversion based on the IBC candidate list.
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公开(公告)号：US20240244222A1
公开(公告)日：2024-07-18
申请号：US18561695
申请日：2022-05-17
Inventor： Zhipin DENG , Li ZHANG , Kai ZHANG , Na ZHANG
IPC: H04N19/137 , H04N19/159 , H04N19/176 , H04N19/70
CPC classification number: H04N19/137 , H04N19/159 , H04N19/176 , H04N19/70
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: constructing, during a conversion between a target video block of a video and a bitstream of the video, at least one template in the target video block based on at least one neighbor sample of the target video block that satisfies a predetermined criterion; applying template matching to refine motion information for the target video block based on the at least one determined template, to obtain refined motion information; and performing the conversion based on the refined motion information. Compared with the conventional solution, the proposed method can advantageously improve the coding efficiency and performance.
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公开(公告)号：US20240196002A1
公开(公告)日：2024-06-13
申请号：US18287603
申请日：2022-04-21
Inventor： Zhipin DENG , Li ZHANG , Kai ZHANG , Na ZHANG
IPC: H04N19/52 , H04N19/105 , H04N19/117 , H04N19/159 , H04N19/176 , H04N19/82 , H04N19/86
CPC classification number: H04N19/52 , H04N19/105 , H04N19/117 , H04N19/159 , H04N19/176 , H04N19/82 , H04N19/86
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, during a conversion between a first video unit in a target picture of a video and a bitstream of the video, second coding data of the first video unit based on first coding data of the first video unit and a refinement process, the first coding data being coded by a target coding mode; determining the use of the first coding data or the second coding data for processing a second video unit subsequent to the first video unit based on the target coding mode; and performing the conversion based on the target coding data. Compared with the conventional solution, the proposed method can advantageously improve the coding performance and efficiency.
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