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公开(公告)号：US20230247199A1
公开(公告)日：2023-08-03
申请号：US18295580
申请日：2023-04-04
Inventor： Zhipin Deng , Li Zhang , Hongbin Liu , Kai Zhang , Jizheng Xu , Yang Wang , Yue Wang
IPC: H04N19/119 , H04N19/132 , H04N19/137 , H04N19/176 , H04N19/70
CPC classification number: H04N19/119 , H04N19/132 , H04N19/137 , H04N19/176 , H04N19/70
Abstract: A method of video processing is provided to comprise: performing a conversion between a current video block of a video and a bitstream representation of the video, wherein, during the conversion, a use of a geometric partitioning mode is allowed for the current video block, and wherein parameters of the geometric partitioning mode are computed using a set of angles including a first number of angles that is less than a first threshold value and/or a set of distances including a second number of distances that is less than a second threshold value.
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公开(公告)号：US11711516B2
公开(公告)日：2023-07-25
申请号：US17338552
申请日：2021-06-03
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/132 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/513
CPC classification number: H04N19/132 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/513
Abstract: A method for video processing includes performing a conversion between a current video block and a bitstream representation of the current video block using an intra-prediction coding scheme based on an n-order polynomial model using at least one variable associated with the current video block, where n is an integer greater than or equal to zero, wherein the conversion includes generating the current video block from the bitstream representation or generating the bitstream representation from the current video block.
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公开(公告)号：US11706443B2
公开(公告)日：2023-07-18
申请号：US17316199
申请日：2021-05-10
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/52 , H04N19/109 , H04N19/176 , H04N19/46 , H04N19/105 , H04N19/139 , H04N19/184 , H04N19/70 , H04N19/129 , H04N19/137 , H04N19/196
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 current video block of a video and a coded representation of the video, a mode of operation of an UMVE mode; and performing the conversion based on the determining, wherein the current video block is coded with an affine merge mode and motion vector differences in the affine UMVE mode, and wherein one or more fields in the coded representation correspond to the mode of operation, and wherein the one or more fields include: a list size field that indicates a size of a base affine merge candidate list for an affine merge mode with prediction offsets that is used by the UMVE mode, or a table field that signals a distance table or a direction table for the affine merge mode with prediction offsets.
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公开(公告)号：US11695946B2
公开(公告)日：2023-07-04
申请号：US17698141
申请日：2022-03-18
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/46 , H04N19/176 , H04N19/169 , H04N19/70 , H04N19/59
CPC classification number: H04N19/46 , H04N19/176 , H04N19/1883 , H04N19/70
Abstract: A method of visual media processing, including: determining, for a current video block, a motion vector for use in a sub-block based motion vector prediction (sbTMVP) process to locate a corresponding block in a collocated picture for a conversion between the current video block and a bitstream representation of the current video block, wherein the motion vector used in the sbTMVP process is computed in accordance with a scaling operation; and performing based on using the motion vector, the conversion between the current video block and the bitstream representation of the visual media data.
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公开(公告)号：US11695931B2
公开(公告)日：2023-07-04
申请号：US17362341
申请日：2021-06-29
Inventor： Jizheng Xu , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/132 , H04N19/176 , H04N19/423 , H04N19/96
CPC classification number: H04N19/132 , H04N19/176 , H04N19/423 , H04N19/96
Abstract: A method of visual media processing includes determining, for a conversion between a current video block of visual media data and a bitstream representation of the current video block, a buffer that stores reference samples for prediction in an intra block copy mode; for a sample spatially located at location of the current video block relative to an upper-left position of a coding tree unit including the current video block and having a block vector, computing a corresponding reference in the buffer at a reference location, wherein the reference location is determined using the block vector and the location; and upon determining that the reference location lies outside the buffer, re-computing the reference location based at least in part on a location of the current video block relative to the coding tree unit including the current video block.
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Patent Agency Ranking
公开(公告)号：US20230209072A1
公开(公告)日：2023-06-29
申请号：US18172484
申请日：2023-02-22
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/33 , H04N19/176 , H04N19/18 , H04N19/12 , H04N19/124 , H04N19/136 , H04N19/157 , H04N19/167 , H04N19/30 , H04N19/61 , H04N19/70 , H04N19/159 , H04N19/50
CPC classification number: H04N19/33 , H04N19/176 , H04N19/18 , H04N19/12 , H04N19/124 , H04N19/136 , H04N19/157 , H04N19/167 , H04N19/30 , H04N19/61 , H04N19/70 , H04N19/159 , H04N19/50
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：US11677953B2
公开(公告)日：2023-06-13
申请号：US17330792
申请日：2021-05-26
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/96
CPC classification number: H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/96
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 region of a video and a bitstream representation of the video. The bitstream representation is processed according to a first format rule that specifies whether a first indication of usage of a palette mode is signaled for the block and a second format rule that specifies a position of the first indication relative to a second indication of usage of a prediction mode for the block.
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公开(公告)号：US20230164347A1
公开(公告)日：2023-05-25
申请号：US18156040
申请日：2023-01-18
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/513 , H04N19/176 , H04N19/184 , H04N19/52
CPC classification number: H04N19/513 , H04N19/176 , H04N19/184 , H04N19/52
Abstract: Devices, systems, and methods for digital video coding, which includes constructing separate motion candidate lists for video coding, are described. An exemplary method for video processing includes constructing, for a first video block of a video, a first motion candidate list using a first motion candidate list construction method that excludes motion candidates that are only derived from temporal blocks, and performing a conversion between the first video block and a bitstream representation of the video including the first video block according to the constructed first motion candidate list.
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公开(公告)号：US11659202B2
公开(公告)日：2023-05-23
申请号：US17587768
申请日：2022-01-28
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/11 , H04N19/186 , H04N19/593 , H04N19/117 , H04N19/132 , H04N19/176
CPC classification number: H04N19/593 , H04N19/11 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/186
Abstract: A method of video processing is described. The method includes: determining, based on a coding mode of a current video block of a video, whether a position dependent intra prediction combination (PDPC) method is used for coding the current video block based on a first rule, and performing a conversion between the current video block and a coded representation of the video according to the determining, wherein the PDPC method combines neighboring samples with a prediction signal of the current video block to generate a refined prediction signal of the current video block.
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公开(公告)号：US20230076783A1
公开(公告)日：2023-03-09
申请号：US17977582
申请日：2022-10-31
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/117 , H04N19/132 , H04N19/80 , H04N19/523 , H04N19/176
Abstract: A method of video processing is described. The method includes determining, for a conversion between a current video block of a current picture of a video and a coded representation of the video, an applicability of an alternative interpolation filter, wherein the applicability of the alternative interpolation filter indicates whether to apply the alternative interpolation filter in the conversion; and performing the conversion based on the determining; wherein the applicability of the alternative interpolation filter is determined based on whether a reference picture resampling in which a reference picture of the current picture is resampled to perform the conversion is used.
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