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公开(公告)号：US20240107013A1
公开(公告)日：2024-03-28
申请号：US18516447
申请日：2023-11-21
Inventor： Zhipin Deng , Li Zhang , Ye-kui Wang , Kai Zhang , Jizheng Xu
IPC: H04N19/117 , H04N19/105 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/463 , H04N19/52 , H04N19/70 , H04N19/80
CPC classification number: H04N19/117 , H04N19/105 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/463 , H04N19/52 , H04N19/70 , H04N19/80
Abstract: A method includes determining, for a conversion between a video block of a video and a bitstream of the video, a size of prediction block corresponding to the video block according to a rule. The method also includes performing the conversion based on the determining. The rule specifies that a first size of the prediction block is determined responsive to whether a prediction refinement using optical flow technique is used for coding the video block. The video block has a second size and is coded using an affine merge mode or an affine advanced motion vector prediction mode.
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公开(公告)号：US11943481B2
公开(公告)日：2024-03-26
申请号：US17965325
申请日：2022-10-13
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Hsiao Chiang Chuang
IPC: H04N19/70 , H04N19/132 , H04N19/176 , H04N19/186
CPC classification number: H04N19/70 , H04N19/132 , H04N19/176 , H04N19/186
Abstract: Methods, systems, and devices for performing entropy coding for a palette escape symbol in palette mode coding and decoding are described. An example method for video processing includes performing a conversion between a video having one or more video regions including a current video block and a bitstream representation of the video, wherein the bitstream representation conforms to a format rule that the current video block is coded using a palette mode coding tool, wherein a binarization of an escape symbol for the current video block uses an exponential-Golomb (EG) code of order K, wherein K is a non-negative integer that is unequal to three, and wherein the palette mode coding tool represents the current video block using a palette of representative color values and wherein the escape symbol is used for a sample of the current video block coded without using the representative color values.
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公开(公告)号：US11943444B2
公开(公告)日：2024-03-26
申请号：US17887297
申请日：2022-08-12
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/132 , G06F17/16 , H04N19/105 , H04N19/159 , H04N19/176
CPC classification number: H04N19/132 , G06F17/16 , H04N19/105 , H04N19/159 , H04N19/176
Abstract: A method for video processing includes performing a conversion between a current video block of a video and a bitstream representation of the current video block using a matrix based intra prediction (MIP) mode, where the conversion includes performing the upsampling operation in which the final prediction block is determined by using a reduced prediction block of the current video block and by using reconstructed neighboring samples of the current video block according to a rule, and where the reduced prediction block is obtained by performing the matrix vector multiplication operation on reduced boundary samples of the current video block.
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公开(公告)号：US20240098296A1
公开(公告)日：2024-03-21
申请号：US18511098
申请日：2023-11-16
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/513 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/51 , H04N19/517
CPC classification number: H04N19/513 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/51 , H04N19/517
Abstract: A method for video processing is provided to comprise: determining a motion vector precision of one or more motion vectors related to a current video block of a video; selecting, based on the motion vector precision, a motion vector range; and performing, based on the motion vector range, a conversion between the current video block and a bitstream representation of the video.
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公开(公告)号：US20240089483A1
公开(公告)日：2024-03-14
申请号：US18508853
申请日：2023-11-14
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Jizheng Xu , Ye-kui Wang
IPC: H04N19/46 , H04N19/174 , H04N19/176 , H04N19/70
CPC classification number: H04N19/46 , H04N19/174 , H04N19/176 , H04N19/70
Abstract: Devices, systems and methods related to digital video coding, and specifically, to signaling of slice types in video picture headers are described. One example method of video processing includes performing a conversion between a video including one or more video pictures including one or more slices and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that for a video picture of the one or more video pictures having all slices coded as I slices, P slice and B slice related syntax elements are omitted from a picture header for the video picture.
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Patent Agency Ranking
公开(公告)号：US11930185B2
公开(公告)日：2024-03-12
申请号：US17246794
申请日：2021-05-03
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/11 , H04N19/132 , H04N19/149 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/50 , H04N19/593 , H04N19/70
CPC classification number: H04N19/149 , H04N19/105 , H04N19/11 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/50 , H04N19/593 , H04N19/70
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, multiple sets of parameters, wherein each set of parameters defines a cross-component linear model (CCLM) and is derived from a corresponding group of chroma samples at corresponding chroma sample positions; determining, based on the multiple sets of parameters, parameters for a final CCLM; and performing the conversion based on the final CCLM.
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公开(公告)号：US20240080441A1
公开(公告)日：2024-03-07
申请号：US18502636
申请日：2023-11-06
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/70
CPC classification number: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , 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 conversion between a current video block of a video and a bitstream representation of the current video block according to a rule, where the rule specifies a relationship between samples of the current video block and matrices or offset values applied in a matrix weighted intra prediction (MIP) mode during the conversion, and where the MIP mode includes determining a prediction block of the current video block by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation.
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公开(公告)号：US11924432B2
公开(公告)日：2024-03-05
申请号：US17572810
申请日：2022-01-11
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/00 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
CPC classification number: H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
Abstract: Devices, systems and methods for palette mode coding are described. An exemplary method for video processing includes performing a conversion between a block of a video and a bitstream representation of the video. The bitstream representation is processed according to a format rule that specifies a first indication of usage of a palette mode and a second indication of usage of an intra block copy (IBC) mode are signaled dependent of each other.
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公开(公告)号：US11917211B2
公开(公告)日：2024-02-27
申请号：US17892746
申请日：2022-08-22
Inventor： Kai Zhang , Li Zhang , Ye-Kui Wang , Zhipin Deng , Kui Fan , Jizheng Xu , Hongbin Liu
IPC: H04N11/02 , H04N19/96 , H04N19/184 , H04N19/70 , H04N19/174 , H04N19/119 , H04N19/129 , H04N19/172 , H04N19/176
CPC classification number: H04N19/96 , H04N19/119 , H04N19/129 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/184 , H04N19/70
Abstract: Techniques for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video including a video picture including a video tile including one or more slices and a bitstream of the video according to a rule. The rule specifies that a second slice in a tile that includes a first slice in a picture has a height that is represented in a unit of coding tree units. The first slice has a first slice index, and the second slice has a second slice index that is determined based on the first slice index and a number of explicitly provided slice heights in the video tile. The height of the second slice is determined based on the first slice index and the second slice index.
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公开(公告)号：US11902518B2
公开(公告)日：2024-02-13
申请号：US17835647
申请日：2022-06-08
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Ye-kui Wang
IPC: H04N19/176 , H04N19/70 , H04N19/117 , H04N19/174 , H04N19/80 , H04N19/186
CPC classification number: H04N19/117 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/80
Abstract: An example method of video processing includes applying, in a conversion between a video comprising multiple components and a bitstream representation of the video, a deblocking filter to video blocks of the multiple components. A deblocking filter strength for the deblocking filter of each of the multiple components is determined according to a rule that specifies to use a different manner for determining the deblocking filter strength for the video blocks of each of the multiple components.
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