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公开(公告)号：US20240348772A1
公开(公告)日：2024-10-17
申请号：US18674691
申请日：2024-05-24
Inventor： Wenyi WANG , Yingzhan Xu , Kai Zhang , Li Zhang
IPC: H04N19/105 , H04N19/139 , H04N19/172 , H04N19/597
CPC classification number: H04N19/105 , H04N19/139 , H04N19/172 , H04N19/597
Abstract: Embodiments of the present disclosure provide a solution for point cloud coding. A method for point cloud coding is proposed. The method comprises: determining, during a conversion between a current frame of a point cloud sequence and a bitstream of the point cloud sequence, at least one neighbor list comprising a set of neighbor points of a current point of the current frame based on geometry information of the set of neighbor points; and performing the conversion based on the at least one neighbor list. Compared with the conventional solution, the proposed method can advantageously improve the point cloud coding efficiency and coding quality.
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公开(公告)号：US12120340B2
公开(公告)日：2024-10-15
申请号：US17739598
申请日：2022-05-09
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/52 , H04N19/105 , H04N19/132 , H04N19/137 , H04N19/176 , H04N19/184 , H04N19/56 , H04N19/70 , H04N19/96
CPC classification number: H04N19/52 , H04N19/105 , H04N19/132 , H04N19/137 , H04N19/176 , H04N19/184 , H04N19/56 , H04N19/70 , H04N19/96
Abstract: Embodiments of the present disclosure relates to constraints for usage of updated motion information. A method for video processing is provided, including: determining original motion information associated with a current block; generating updated motion information based on specific prediction mode; and performing, based on the updated motion information, a conversion between the current block and a bitstream representation of a video data including the current block, wherein the specific prediction mode includes one or more of bi-directional optical flow (BIO) refinement, a decoder-side motion vector refinement (DMVR), frame-rate up conversion (FRUC) techniques or a template matching technique.
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公开(公告)号：US12120304B2
公开(公告)日：2024-10-15
申请号：US17968553
申请日：2022-10-18
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
CPC classification number: 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. The method includes determining, for a conversion between a video comprising a video unit and a bitstream of the video, whether a first coding tool is enabled for the video unit according to a rule. The rule specifies that the first coding tool and a second coding tool are mutually exclusively enabled. The first coding tool or the second coding tool comprises a sign data hiding tool. The method also includes performing the conversion according to the determining.
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公开(公告)号：US12114013B2
公开(公告)日：2024-10-08
申请号：US17540980
申请日：2021-12-02
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Yang Wang , Yue Wang
IPC: H04N19/61 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/625
CPC classification number: H04N19/61 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/625
Abstract: Devices, systems and methods for digital video coding, which includes using multiple transforms, are described. In a representative aspect, a method for video processing includes making a decision, based on one or more decoded coefficients and in an absence of one or more transform indices, regarding an application of a transform to a current block of a video, and performing, based on the decision, a conversion between the current block and a bitstream representation of the video.
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公开(公告)号：US12113972B2
公开(公告)日：2024-10-08
申请号：US17698114
申请日：2022-03-18
Inventor： Jizheng Xu , Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/117 , H04N19/105 , H04N19/12 , H04N19/167 , H04N19/172
CPC classification number: H04N19/117 , H04N19/105 , H04N19/12 , H04N19/167 , H04N19/172
Abstract: Adaptive resolution change and scalable coding for screen contents are described. One example is a method for video processing, comprising: determining, for a conversion between a picture or a video and a bitstream representation of the picture or the video, whether the picture or the video is native resolution based on an indication included in the bitstream representation; and performing the conversion based on the determination.
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Patent Agency Ranking
公开(公告)号：US20240333978A1
公开(公告)日：2024-10-03
申请号：US18660356
申请日：2024-05-10
Inventor： Kai Zhang , Li Zhang , Zhipin Deng , Na Zhang , Yang Wang
IPC: H04N19/70 , H04N19/119 , H04N19/167 , H04N19/176 , H04N19/186
CPC classification number: H04N19/70 , H04N19/119 , H04N19/167 , H04N19/176 , H04N19/186
Abstract: A mechanism for processing video data is disclosed. A position of a last significant coefficient in a block of residual with a width (W) and a height (H) is determined based on whether W is non-dyadic and based on whether H is non-dyadic. A conversion between a visual media data and a bitstream is performed based on the position of the last significant coefficient in the block.
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公开(公告)号：US12108090B2
公开(公告)日：2024-10-01
申请号：US17389104
申请日：2021-07-29
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/96 , H04N19/119 , H04N19/12 , H04N19/122 , H04N19/13 , H04N19/132 , H04N19/136 , H04N19/157 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/70
CPC classification number: H04N19/96 , H04N19/119 , H04N19/12 , H04N19/122 , H04N19/13 , H04N19/132 , H04N19/136 , H04N19/157 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/70
Abstract: A method for processing a video includes performing a conversion between a current video block and a bitstream representation of the current video block, wherein the current video block is unsymmetrically split into four partitions using an unsymmetrical quad-Tree (UQT) splitting, wherein the four partitions includes a first partition having a dimension of W1×H1, a second partition having a dimension of W2×H2, a third partition having a dimension of W3×H3, and a fourth partition having a dimension of W4×H4, wherein W1, W2, W3, W4, H1, H2, H3, and H4 are integers.
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公开(公告)号：US12096021B2
公开(公告)日：2024-09-17
申请号：US17949045
申请日：2022-09-20
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/52 , H04N19/70
CPC classification number: H04N19/52 , H04N19/105 , H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/70
Abstract: A method for video processing includes performing a conversion between a current video block of a video region of a video and a coded representation of the video. 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. A parameter set in the coded representation comprises parameter information for the coding mode.
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公开(公告)号：US12096013B2
公开(公告)日：2024-09-17
申请号：US18172484
申请日：2023-02-22
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/33 , H04N19/11 , H04N19/12 , H04N19/124 , H04N19/136 , H04N19/157 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/18 , H04N19/30 , H04N19/50 , H04N19/61 , H04N19/70
CPC classification number: H04N19/33 , H04N19/12 , H04N19/124 , H04N19/136 , H04N19/157 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/18 , H04N19/30 , H04N19/50 , H04N19/61 , H04N19/70 , H04N19/11
Abstract: A video processing method includes performing a conversion between a video block of a video and a coded representation of the video. The coded representation conforms to a format rule. The format rule specifies that applicability of a transform skip mode to the video block is determined by a coding condition of the video block. The format rule also specifies that a syntax element indicative of applicability of the transform skip mode is omitted from the coded representation. The transform skip mode includes skipping applying a forward transform to at least some coefficients prior to encoding into the coded representation, or during decoding, skipping applying an inverse transform to at least some coefficients prior to decoding from the coded representation.
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公开(公告)号：US12088837B2
公开(公告)日：2024-09-10
申请号：US17975005
申请日：2022-10-27
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/52 , H04N19/176 , H04N19/184
CPC classification number: H04N19/52 , H04N19/176 , H04N19/184
Abstract: A video processing method includes generating, for a conversion between a current block of a video and a bitstream representation of the video, a motion vector for the current block; invoking a weighted prediction processing tool or a second processing tool in a mutually exclusive manner; and performing the conversion according to the invoking. The invoking of the second processing tool comprises refining the motion vector.
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