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公开(公告)号：US20240022741A1
公开(公告)日：2024-01-18
申请号：US18469230
申请日：2023-09-18
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu
IPC: H04N19/186 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/593 , H04N19/96
CPC classification number: H04N19/186 , H04N19/119 , H04N19/96 , H04N19/176 , H04N19/593 , H04N19/159
Abstract: A video processing method is described. The method includes determining, for a conversion between a video unit of a video and a coded representation of the video, a maximum number of entries of a palette of representative values used during the conversion according to a rule; and performing the conversion using the palette, and wherein the rule specifies the maximum number of entries according to a characteristic of the video unit.
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公开(公告)号：US20240022722A1
公开(公告)日：2024-01-18
申请号：US18476957
申请日：2023-09-28
Inventor： Kai Zhang , Li Zhang , Zhipin Deng , Na Zhang , Yang Wang
IPC: H04N19/119 , H04N19/105 , H04N19/132 , H04N19/176
CPC classification number: H04N19/119 , H04N19/105 , H04N19/132 , H04N19/176
Abstract: Systems, methods, apparatus for video processing are described. A video processing method includes determining, for a conversion between a current block of a video and a bitstream of the video, whether or which a partitioning scheme is enabled for coding of the current block according to a rule, and performing the conversion based on the determining. The rule is based on one or more neighboring blocks of the current block.
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公开(公告)号：US11877002B2
公开(公告)日：2024-01-16
申请号：US17457868
申请日：2021-12-06
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/56 , H04N19/52 , H04N19/159 , H04N19/176 , H04N19/137
CPC classification number: H04N19/52 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/56
Abstract: A method of video processing is provided to include maintaining one or more tables, wherein each table includes one or more motion candidates and each motion candidate is associated with corresponding motion information; performing a conversion between a current block and a bitstream representation of a video including the current block by using motion information in a table; and updating, after performing of the conversion, one or more tables based on M sets of additional motion information associated with the current block, M being an integer.
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公开(公告)号：US11871006B2
公开(公告)日：2024-01-09
申请号：US17505227
申请日：2021-10-19
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/159 , H04N19/172 , H04N19/176 , H04N19/96 , H04N19/117 , H04N19/132 , H04N19/186 , H04N19/105 , H04N19/513
CPC classification number: H04N19/159 , H04N19/105 , H04N19/117 , H04N19/132 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/513 , H04N19/96
Abstract: Devices, systems and methods for digital video coding, which includes inter prediction with refinement, are described. An exemplary method of video processing includes determining to use, for a conversion between a current block of a video and a bitstream representation of the video, a first linear optimization model for the conversion using a first coding mode, the first linear optimization model being derived from a second linear optimization model that is used for the conversion using a second coding mode, and performing, based on the determining, the conversion. Another exemplary method of video processing includes determining to use, for a conversion between a current block of a video and a bitstream representation of the video, a gradient value computation algorithm for a bi-directional optical flow tool, and performing, based on the determining, the conversion.
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公开(公告)号：US11870979B2
公开(公告)日：2024-01-09
申请号：US17886084
申请日：2022-08-11
Inventor： Zhipin Deng , Li Zhang , Kai Zhang , Ye-kui Wang , Kui Fan
IPC: H04N19/30 , H04N19/52 , H04N19/70 , H04N19/82 , H04N19/105 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/139 , H04N19/167 , H04N19/172 , H04N19/174 , H04N19/184 , H04N19/196 , H04N19/547 , H04N19/573
CPC classification number: H04N19/105 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/139 , H04N19/167 , H04N19/172 , H04N19/174 , H04N19/184 , H04N19/196 , H04N19/30 , H04N19/52 , H04N19/547 , H04N19/573 , H04N19/70 , H04N19/82
Abstract: Methods, apparatus, systems for video processing, including video encoding or video decoding are described. One example method includes performing a conversion between a video comprising a video picture that includes a video slice and a bitstream of the video. The bitstream conforms to a format rule specifying that, in case a slice type of the video slice is type P and temporal motion vector prediction is enabled, usage of reference picture resampling (RPR) for a reference picture in a collocated reference picture list is disabled. The reference picture is indicated by a reference index of a collocated picture of the video slice used for the temporal motion vector prediction.
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Patent Agency Ranking
公开(公告)号：US11863781B2
公开(公告)日：2024-01-02
申请号：US17891603
申请日：2022-08-19
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang , Li Zhang
IPC: H04N19/46 , H04N19/169 , H04N19/174 , H04N19/70 , H04N19/105 , H04N19/186 , H04N19/172
CPC classification number: H04N19/46 , H04N19/105 , H04N19/172 , H04N19/174 , H04N19/186 , H04N19/188 , H04N19/70
Abstract: A method includes performing a conversion between a current slice of a current picture of a video and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that a general constraint information syntax structure, which comprises one or more constraint flags indicating constraints on an explicit weighted prediction being enabled for slices of a set of pictures, is present.
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公开(公告)号：US11863771B2
公开(公告)日：2024-01-02
申请号：US17398887
申请日：2021-08-10
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/00 , H04N19/436 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/51
CPC classification number: H04N19/436 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/51
Abstract: A method for processing a video includes maintaining one or more tables, wherein each table includes motion candidates derived from previously processed video blocks that are processed prior to a first video block of a video; deriving motion information for the first video block; applying refinement to the motion information when at least one decoder side motion vector derivation (DMVD) technologies is enabled; performing a conversion between a bitstream representation of the first video block and the first video block using the refined motion information; and determining, whether to use the refined motion information or un-refined motion information for updating one or more tables.
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公开(公告)号：US11863762B2
公开(公告)日：2024-01-02
申请号：US17992246
申请日：2022-11-22
Inventor： Ye-kui Wang , Zhipin Deng , Kai Zhang , Li Zhang
IPC: H04N19/169 , H04N19/70 , H04N19/96 , H04N19/174 , H04N19/172 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/105
CPC classification number: H04N19/172 , H04N19/105 , H04N19/174 , H04N19/184 , H04N19/186 , H04N19/188 , H04N19/46 , H04N19/70 , H04N19/96
Abstract: Embodiments for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video having one or more layers having one or more video pictures having one or more subpictures and a bitstream of the video according to a rule, wherein the rule defines network abstraction layer (NAL) units to be extracted from a bitstream during a sub-bitstream extraction process to output a sub-bitstream, wherein the rule further specifies that one or more inputs to the sub-bitstream extraction process include a target output layer set (OLS) index (targetOlsIdx) that identifies an OLS index of a target OLS and is equal to an index to a list of OLSs specified by a video parameter set, and wherein the one or more inputs satisfy a set of conditions.
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公开(公告)号：US20230421817A1
公开(公告)日：2023-12-28
申请号：US18450787
申请日：2023-08-16
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang , Li Zhang
IPC: H04N19/70 , H04N19/105 , H04N19/132 , H04N19/172 , H04N19/174 , H04N19/33 , H04N19/52 , H04N19/96
CPC classification number: H04N19/70 , H04N19/105 , H04N19/132 , H04N19/172 , H04N19/174 , H04N19/33 , H04N19/52 , H04N19/96
Abstract: Methods, devices and systems for video coding and encoding, which include conforming to constraints on collocated pictures, are described. One example method of video processing includes performing a conversion between a video including a current picture and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that the bitstream includes a flag for disabling a use of a temporal motion vector prediction tool for the current picture based on whether a reference picture in a decoded picture buffer has a spatial resolution and a scaling window offset that are identical to that of the current picture.
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公开(公告)号：US11856211B2
公开(公告)日：2023-12-26
申请号：US17319961
申请日：2021-05-13
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/423 , H04N19/159 , H04N19/176 , H04N19/137 , H04N19/30 , H04N19/513 , H04N19/167 , H04N19/196 , H04N19/52
CPC classification number: H04N19/423 , H04N19/105 , H04N19/137 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/196 , H04N19/30 , H04N19/513 , H04N19/52
Abstract: Usage for History-based affine parameters is described. In an exemplary aspect, a method for video processing includes deriving, for a conversion between a current block of video and a bitstream representation of the current block, affine related information associated with affine model for the current block based on affine parameters stored in a buffer for storing affine related information of blocks coded prior the current block; and performing the conversion by using the affine related information.
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