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公开(公告)号：US11758183B2
公开(公告)日：2023-09-12
申请号：US17453135
申请日：2021-11-01
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/59 , H04N19/176 , H04N19/159 , H04N19/186 , H04N19/40 , H04N19/105 , H04N19/132 , H04N19/70
CPC classification number: H04N19/59 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/40 , H04N19/70
Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a first determination whether a luma video block of a video is coded using a matrix based intra prediction (MIP) mode; performing a second determination that the luma video block is applicable for determining a chroma intra mode for a current chroma video block of the video; performing, based on the first determination and the second determination, a third determination about the chroma intra mode to be used for the current chroma video block; and performing, based on the third determination, a conversion between the current chroma video block and a bitstream representation of the current chroma video block.
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公开(公告)号：US11758126B2
公开(公告)日：2023-09-12
申请号：US17665275
申请日：2022-02-04
Inventor： Kai Zhang , Zhipin Deng , Hongbin Liu , Li Zhang , Jizheng Xu
IPC: H04N19/105 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/103 , H04N19/119 , H04N19/157 , H04N19/167 , H04N19/172 , H04N19/30 , H04N19/169
CPC classification number: H04N19/105 , H04N19/103 , H04N19/119 , H04N19/132 , H04N19/157 , H04N19/167 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/1883 , H04N19/30 , H04N19/70
Abstract: A method of video processing includes performing a conversion between a video unit of a video and a coded representation of the video using at least a video picture. Only one of a sub-picture coding mode or a resolution-changing coding mode is enabled for the video unit. The sub-picture coding mode is a mode in which the video picture is divided into multiple sub-pictures, and the resolution-changing coding mode is a mode in which a resolution of the video picture is adjusted during the conversion.
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公开(公告)号：US11750845B2
公开(公告)日：2023-09-05
申请号：US17962141
申请日：2022-10-07
Inventor： Zhipin Deng , Li Zhang , Ye-Kui Wang , Kai Zhang , Jizheng Xu
IPC: H04N19/46 , H04N19/70 , H04N19/159 , H04N19/172 , H04N19/174
CPC classification number: H04N19/70 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/46
Abstract: Systems, methods and apparatus for video processing are described. 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 including one or more video regions and a bitstream of the video according to a format rule. The format rule specifies that a variable X indicates whether B slice is allowed or used in a video region. The format rule further specifies that the variable X is based on values of a reference picture list information present flag and/or a field indicating a number of entries in a reference picture list syntax structure.
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公开(公告)号：US11736722B2
公开(公告)日：2023-08-22
申请号：US17692929
申请日：2022-03-11
Applicant: Bytedance Inc.
Inventor： Li Zhang , Weijia Zhu , Jizheng Xu
IPC: H04N19/46 , H04N19/593 , H04N19/105 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/169 , G06T9/00 , G06T11/00 , G06T11/40 , H04N19/119 , H04N19/159 , G06V10/20
CPC classification number: H04N19/593 , G06T9/004 , G06T11/001 , G06T11/40 , G06V10/20 , H04N19/105 , H04N19/119 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/1883 , H04N19/46
Abstract: In one example aspect, a method of video processing includes performing a conversion between a current block in video unit of a video and a bitstream of the video using a palette mode in which a palette of representative sample values is used for coding the current block. During the conversion, a predictor palette is used for predicting the palette of representative sample values, and wherein a size of the predictor palette is adaptively adjusted according to a rule.
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公开(公告)号：US20230262263A1
公开(公告)日：2023-08-17
申请号：US18193131
申请日：2023-03-30
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/61 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/11 , H04N19/124 , H04N19/132 , H04N19/70
CPC classification number: H04N19/61 , H04N19/11 , H04N19/70 , H04N19/124 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186
Abstract: A video processing method includes determining, for a conversion between a block of a video and a bitstream representation of the video, that a secondary transform with a reduced dimension dimension (e.g., an inverse low frequency non-separable transform) is applicable to a single sub-block of the block in case a dimension of the block satisfies a condition. The secondary transform is performed between a forward primary transform and a quantization step or between a de-quantization step and an inverse primary transform. The reduced dimension is reduced from a dimension of the block. The method also includes performing the conversion based on the determining.
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Patent Agency Ranking
公开(公告)号：US11729405B2
公开(公告)日：2023-08-15
申请号：US17162813
申请日：2021-01-29
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/189 , H04N19/105 , H04N19/102 , H04N19/186 , H04N19/132 , H04N19/176
CPC classification number: H04N19/189 , H04N19/105 , H04N19/132 , H04N19/176 , H04N19/186
Abstract: A method for video processing is provided. The method includes determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, parameters of a cross-component linear model (CCLM) based on two or four chroma samples and/or corresponding luma samples; and performing the conversion based on the determining.
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公开(公告)号：US20230247221A1
公开(公告)日：2023-08-03
申请号：US18295553
申请日：2023-04-04
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/59 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/40 , H04N19/70
CPC classification number: H04N19/59 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/40 , H04N19/70
Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a first determination whether a luma video block of a video is coded using a matrix based intra prediction (MIP) mode; performing a second determination that the luma video block is applicable for determining a chroma intra mode for a current chroma video block of the video; performing, based on the first determination and the second determination, a third determination about the chroma intra mode to be used for the current chroma video block; and performing, based on the third determination, a conversion between the current chroma video block and a bitstream representation of the current chroma video block.
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公开(公告)号：US11711547B2
公开(公告)日：2023-07-25
申请号：US17718785
申请日：2022-04-12
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Jizheng Xu , Yue Wang
IPC: H04N19/46 , H04N19/70 , H04N19/159 , H04N19/176 , H04N19/174 , H04N19/169
CPC classification number: H04N19/70 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/188 , H04N19/46
Abstract: An example method of video processing includes performing a conversion between a video picture of a video and a bitstream representation of the video. The bitstream representation conforms to a format rule. The format rule specifies that applicability of a Decoder-side Motion Vector Refinement coding tool and a Bi-Directional Optical Flow coding tool for the video picture are indicated separately in the bitstream representation.
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公开(公告)号：US11706409B2
公开(公告)日：2023-07-18
申请号：US17727542
申请日：2022-04-22
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Jizheng Xu , Yue Wang
IPC: H04N19/70 , H04N19/105 , H04N19/132 , H04N19/176
CPC classification number: H04N19/105 , H04N19/132 , H04N19/176 , H04N19/70
Abstract: A method of video processing includes determining, for a conversion between a current block of a video and a coded representation of the video, that a resolution of a current picture containing the current block and a reference picture used for the conversion are different, and performing the conversion based on the determining such that predicted values of a group of samples of the current block are generated using a horizontal or a vertical interpolation filter.
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公开(公告)号：US11700367B2
公开(公告)日：2023-07-11
申请号：US17740753
申请日：2022-05-10
Inventor： Zhipin Deng , Li Zhang , Hongbin Liu , Kai Zhang , Jizheng Xu
IPC: H04N19/105 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/169 , H04N19/30
CPC classification number: H04N19/105 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/1883 , H04N19/30
Abstract: A method for visual media processing, including: computing, during a conversion between a current video block of visual media data and a bitstream representation of the current video block, a cross-component linear model (CCLM) and/or a chroma residual scaling (CRS) factor for the current video block based, at least in part, on neighboring samples of a corresponding luma block which covers a top-left sample of a collocated luma block associated with the current video block, wherein one or more characteristics of the current video block are used for identifying the corresponding luma block.
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