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公开(公告)号：US12132884B2
公开(公告)日：2024-10-29
申请号：US17585704
申请日：2022-01-27
发明人： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC分类号： H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
CPC分类号： H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186
摘要： Devices, systems and methods for video processing are described. An example method for video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, a number of intra-coded neighboring blocks of the current block for a combined inter and intra prediction mode according to a rule that specifies a manner of treating a block coded using a palette coding mode in counting the number of intra-coded neighboring blocks for the combined inter and intra prediction mode. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20240357174A1
公开(公告)日：2024-10-24
申请号：US18763998
申请日：2024-07-03
发明人： Yingzhan Xu , Wenyi Wang , Kai Zhang , Li Zhang
IPC分类号： H04N19/597 , H04N19/159 , H04N19/513
CPC分类号： H04N19/597 , H04N19/159 , H04N19/513
摘要： Embodiments of the present disclosure provide a solution for point cloud coding. A method for point cloud coding is proposed. The method comprises: determining, based on a target motion information between a current frame of a point cloud sequence and a reference frame of the current frame during a conversion between the current frame and a bitstream of the point cloud sequence, whether an attribute inter prediction is performed on the current frame based on the reference frame, the target motion information being used for performing a motion compensation on the reference frame; and performing the conversion based on the determination.
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公开(公告)号：US20240357157A1
公开(公告)日：2024-10-24
申请号：US18763028
申请日：2024-07-03
发明人： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC分类号： H04N19/52 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/513 , H04N19/577
CPC分类号： H04N19/52 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/513 , H04N19/577
摘要： One example method of video processing includes implementing, by a processor, a decoder-side motion vector derivation (DMVD) scheme for motion vector refinement during a conversion between a current video block and a bitstream representation of the current video block by deriving parameters based on a deriving rule. The conversion may include compressing the current video block into the bitstream representation or uncompressing the bitstream representation into pixel values of the current video block.
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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
发明人： Wenyi WANG , Yingzhan Xu , Kai Zhang , Li Zhang
IPC分类号： H04N19/105 , H04N19/139 , H04N19/172 , H04N19/597
CPC分类号： H04N19/105 , H04N19/139 , H04N19/172 , H04N19/597
摘要： 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
发明人： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC分类号： H04N19/52 , H04N19/105 , H04N19/132 , H04N19/137 , H04N19/176 , H04N19/184 , H04N19/56 , H04N19/70 , H04N19/96
CPC分类号： H04N19/52 , H04N19/105 , H04N19/132 , H04N19/137 , H04N19/176 , H04N19/184 , H04N19/56 , H04N19/70 , H04N19/96
摘要： 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
发明人： Yang Wang , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC分类号： H04N19/132 , H04N19/105 , H04N19/11 , H04N19/124 , H04N19/136 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/70 , H04N19/80
CPC分类号： H04N19/132 , H04N19/105 , H04N19/11 , H04N19/124 , H04N19/136 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/70 , H04N19/80
摘要： 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
发明人： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Yang Wang , Yue Wang
IPC分类号： H04N19/61 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/625
CPC分类号： H04N19/61 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/625
摘要： 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
发明人： Jizheng Xu , Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC分类号： H04N19/117 , H04N19/105 , H04N19/12 , H04N19/167 , H04N19/172
CPC分类号： H04N19/117 , H04N19/105 , H04N19/12 , H04N19/167 , H04N19/172
摘要： 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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公开(公告)号：US20240333978A1
公开(公告)日：2024-10-03
申请号：US18660356
申请日：2024-05-10
发明人： Kai Zhang , Li Zhang , Zhipin Deng , Na Zhang , Yang Wang
IPC分类号： H04N19/70 , H04N19/119 , H04N19/167 , H04N19/176 , H04N19/186
CPC分类号： H04N19/70 , H04N19/119 , H04N19/167 , H04N19/176 , H04N19/186
摘要： 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
发明人： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC分类号： 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分类号： 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
摘要： 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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