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公开(公告)号：US11991363B2
公开(公告)日：2024-05-21
申请号：US18073191
申请日：2022-12-01
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/132 , G06F7/78 , G06F17/16 , H04N19/105 , H04N19/159 , H04N19/176
CPC classification number: H04N19/132 , G06F7/78 , G06F17/16 , H04N19/105 , H04N19/159 , H04N19/176
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 using a matrix based intra prediction (MIP) mode in which a prediction block of the current video block is determined by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and followed by an upsampling operation, where the upsampling operation is performed, in both a vertical direction and a horizontal direction in a fixed order, on samples obtained from the matrix vector multiplication operation.
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公开(公告)号：US11979558B2
公开(公告)日：2024-05-07
申请号：US17665275
申请日：2022-02-04
Inventor： Kai Zhang , Zhipin Deng , Hongbin Liu , Li Zhang , Jizheng Xu
IPC: H04N19/105 , H04N19/103 , H04N19/119 , H04N19/132 , H04N19/157 , H04N19/167 , H04N19/169 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/30 , H04N19/70
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：US11979557B2
公开(公告)日：2024-05-07
申请号：US17585704
申请日：2022-01-27
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
CPC classification number: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186
Abstract: 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：US11973959B2
公开(公告)日：2024-04-30
申请号：US17694253
申请日：2022-03-14
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu
IPC: H04N19/117 , H04N19/124 , H04N19/132 , H04N19/14 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/70 , H04N19/86
CPC classification number: H04N19/14 , H04N19/117 , H04N19/124 , H04N19/132 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/70 , H04N19/86
Abstract: An example method of video processing includes determining, for a conversion between a block of a chroma component of a video and a bitstream representation of the video, whether or how to apply a filtering process to an edge of the block based on a first quantization information for a first video region comprising samples on one side of the edge and/or a second quantization information for a second video region comprising samples on the other side of the edge according to a rule that is based on a coding mode applicable to the block for coding the samples on the one side or the samples on the other side of the edge. The rule specifies that multiple QP offsets at different video unit levels are used to determine the first quantization information or the second quantization information. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20240121396A1
公开(公告)日：2024-04-11
申请号：US18504708
申请日：2023-11-08
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: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In one 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 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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Patent Agency Ranking
公开(公告)号：US11956465B2
公开(公告)日：2024-04-09
申请号：US17534968
申请日：2021-11-24
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/52 , H04N19/105 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/577 , H04N19/593
CPC classification number: H04N19/52 , H04N19/105 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/577 , H04N19/593
Abstract: Difference calculation based on partial position is described. In a representative aspect, a method of video processing comprising: calculating, during a conversion between a current block of video and a bitstream representation of the current block, differences between two reference blocks associated with the current block or differences between two reference sub-blocks associated with a sub-block within the current block based on representative positions of the reference blocks or representative positions of the reference sub-blocks; and performing the conversion based on the differences.
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公开(公告)号：US20240114156A1
公开(公告)日：2024-04-04
申请号：US18524994
申请日：2023-11-30
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/196 , H04N11/04 , H04N19/105 , H04N19/12 , H04N19/126 , H04N19/176 , H04N19/186
CPC classification number: H04N19/196 , H04N11/044 , H04N19/105 , H04N19/12 , H04N19/126 , H04N19/176 , H04N19/186
Abstract: A method for implementing an adaptive color transform (ACT) during image/video encoding and decoding, includes determining, for a conversion between a video including a block and a bitstream of the video, that a size of the block is greater than a maximum allowed size for an ACT mode, and performing, based on the determining, the conversion, wherein, in response to the size of the block being greater than the maximum allowed size for the ACT mode, the block is partitioned into multiple sub-blocks, and wherein each of the multiple sub-blocks share a same prediction mode, and the ACT mode is enabled at a sub-block level.
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公开(公告)号：US20240107067A1
公开(公告)日：2024-03-28
申请号：US18497568
申请日：2023-10-30
Inventor： Ye-kui Wang , Zhipin Deng , Li Zhang , Kai Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/105 , H04N19/117 , H04N19/169 , H04N19/172 , H04N19/174 , H04N19/189 , H04N19/196 , H04N19/46 , H04N19/58 , H04N19/635 , H04N19/82 , H04N19/86
CPC classification number: H04N19/70 , H04N19/105 , H04N19/117 , H04N19/172 , H04N19/174 , H04N19/188 , H04N19/189 , H04N19/197 , H04N19/46 , H04N19/58 , H04N19/635 , H04N19/82 , H04N19/86 , H04N19/127
Abstract: A video processing method is provided to include performing a conversion between a video and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies a condition that controls whether or how one or more syntax elements related to picture order counts for a long term reference picture are included in a reference picture list syntax structure in the bitstream.
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公开(公告)号：US20240107055A1
公开(公告)日：2024-03-28
申请号：US18516620
申请日：2023-11-21
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/52 , H04N19/105 , H04N19/109 , H04N19/129 , H04N19/137 , H04N19/139 , H04N19/176 , H04N19/184 , H04N19/196 , H04N19/46 , H04N19/70
CPC classification number: H04N19/52 , H04N19/105 , H04N19/109 , H04N19/129 , H04N19/137 , H04N19/139 , H04N19/176 , H04N19/184 , H04N19/196 , H04N19/46 , H04N19/70
Abstract: A method of video processing is provided. The method includes: determining, for a conversion between a first video block of a video and a bitstream of the video, that a merge mode with motion vector differences is applied into the first video block; and performing the conversion based on the determining, where the merge mode includes motion vector expression to derive motion information of the first video block, where the motion vector expression includes a first parameter representing a motion vector difference and a second parameter indicating a base candidate from a base candidate list, where the first parameter includes a first motion magnitude and a first motion direction, and where the base candidate list is based on a first merge candidate list for a merge mode which is constructed for the first video block during the conversion.
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公开(公告)号：US20240107038A1
公开(公告)日：2024-03-28
申请号：US18519994
申请日：2023-11-27
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang
IPC: H04N19/186 , H04N19/117 , H04N19/12 , H04N19/124 , H04N19/132 , H04N19/157 , H04N19/167 , H04N19/176 , H04N19/30 , H04N19/60
CPC classification number: H04N19/186 , H04N19/117 , H04N19/12 , H04N19/124 , H04N19/132 , H04N19/157 , H04N19/167 , H04N19/176 , H04N19/30 , H04N19/60
Abstract: An example method of video processing includes determining, for a conversion between a chroma block of a video and a bitstream representation of the video, applicability of a deblocking filter process to at least some samples at an edge of the chroma block based on a mode of joint coding of chroma residuals for the chroma block. The method also includes performing the conversion based on the determining.
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