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公开(公告)号：US11943483B2
公开(公告)日：2024-03-26
申请号：US18079219
申请日：2022-12-12
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang
IPC: H04N9/70 , H04N19/105 , H04N19/109 , H04N19/136 , H04N19/169 , H04N19/172 , H04N19/174 , H04N19/184 , H04N19/30 , H04N19/31 , H04N19/42 , H04N19/503 , H04N19/70
CPC classification number: H04N19/70 , H04N19/105 , H04N19/109 , H04N19/136 , H04N19/172 , H04N19/174 , H04N19/184 , H04N19/188 , H04N19/30 , H04N19/31 , H04N19/42 , H04N19/503
Abstract: Methods, systems, and devices for picture output ordering constraints in video bitstreams are described. An example method of video processing includes performing a conversion between a video including one or more pictures and a bitstream of the video according to a rule, wherein the rule specifies that the bitstream includes at least a first picture that is output, wherein the first picture is in an output layer, wherein the first picture includes a syntax element equaling one, and wherein the syntax element affects a decoded picture output and a removal process associated with a hypothetical reference decoder (HRD).
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公开(公告)号：US20240098282A1
公开(公告)日：2024-03-21
申请号：US18517283
申请日：2023-11-22
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang
IPC: H04N19/184 , H04N19/136 , H04N19/169 , H04N19/30 , H04N19/433 , H04N19/46 , H04N19/70
CPC classification number: H04N19/184 , H04N19/136 , H04N19/188 , H04N19/30 , H04N19/433 , H04N19/46 , H04N19/70
Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of video processing includes performing a conversion between a video and a bitstream of the video, wherein the bitstream comprises one or more output layer sets comprising one or more video layers according to a rule, wherein the rule specifies a particular decoding order between a subpicture level information (SLI) supplemental enhancement information (SEI) message and a buffering period (BP) SEI message that apply to a particular output layer set, responsive to a condition that the SLI SEI message and the BP SEI message are included in an access unit.
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公开(公告)号：US20240098273A1
公开(公告)日：2024-03-21
申请号：US18517328
申请日：2023-11-22
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang , Li Zhang
IPC: H04N19/157 , H04N19/103 , H04N19/105 , H04N19/136 , H04N19/172 , H04N19/174 , H04N19/70
CPC classification number: H04N19/157 , H04N19/103 , H04N19/105 , H04N19/136 , H04N19/172 , H04N19/174 , H04N19/70
Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of video processing includes performing a conversion between a current picture of a video and a bitstream of the video according to a rule. The rule specifies that responsive to a picture being referred to by an inter-layer reference picture (ILRP) entry in a reference picture list of a slice of the current picture, the picture is allowed to have a gradual decoding refresh (GDR) type and a syntax element specifying a recovery point of the picture in an output order is 0.
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公开(公告)号：US20240098260A1
公开(公告)日：2024-03-21
申请号：US18503773
申请日：2023-11-07
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/117 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/82 , H04N19/96
CPC classification number: H04N19/117 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/82 , H04N19/96
Abstract: A method of video processing includes determining a classification of samples of a block in a video picture of a video according to a rule, wherein the video picture is divided into multiple regions, and wherein the rule disallows use of neighboring samples of a current sample across one or more boundaries of the multiple regions for the classification. The one or more boundaries of the multiple regions comprises a virtual boundary for an adaptive loop filtering (ALF) process. The method also includes performing a conversion between the block and a bitstream representation of the video by selectively applying the ALF process according to the classification.
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公开(公告)号：US11936874B2
公开(公告)日：2024-03-19
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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Patent Agency Ranking
公开(公告)号：US11936855B2
公开(公告)日：2024-03-19
申请号：US18165017
申请日：2023-02-06
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/517 , H04N19/52 , H04N19/523 , H04N19/80
CPC classification number: H04N19/105 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/517 , H04N19/52 , H04N19/523 , H04N19/80
Abstract: A method of video processing is provided to include: deciding a coding mode used for representing a current video block of a video in a coded representation of the video; and coding the current video block into the coded representation according to the coding mode, wherein use of alternative half-pel accuracy filters in addition to a default half-pel accuracy filter for representing motion information is disabled for the current video block due to use of the coding mode.
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公开(公告)号：US20240089503A1
公开(公告)日：2024-03-14
申请号：US18503900
申请日：2023-11-07
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang , Li Zhang , Kai Zhang
IPC: H04N19/70 , H04N19/169 , H04N19/172 , H04N19/174
CPC classification number: H04N19/70 , H04N19/172 , H04N19/174 , H04N19/188
Abstract: Methods and apparatus for video processing are described. The processing may include video encoding, video decoding or video transcoding. An example video processing method includes performing a conversion between a video comprising one or more pictures and a bitstream of the video according to a format rule, and wherein the format rule specifies that, in response to satisfying one or more conditions, a syntax element indicating whether a first syntax structure providing a profile, a tier and a level information and a second syntax structure providing decoded picture buffer information are present in a sequence parameter set is set to be equal to 1 to indicate that the first syntax structure and the second syntax structure are present in the sequence parameter set.
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公开(公告)号：US11930193B2
公开(公告)日：2024-03-12
申请号：US17992181
申请日：2022-11-22
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang
IPC: H04N19/547 , H04N19/169 , H04N19/172 , H04N19/31 , H04N19/70
CPC classification number: H04N19/188 , H04N19/172 , H04N19/31 , H04N19/70
Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of video processing includes performing a conversion between a video including one or more layers and a bitstream of the video according to a rule, wherein the rule specifies, in a process of sub-bitstream extraction to output an output sub-bitstream, whether to generate non-scalable nested supplementary enhancement information (SEI) messages by extracting scalable-nested SEI messages from a scalable nesting SEI message based on a first flag indicating whether the SEI message applies to specific output layer sets (OLSs) and a second flag indicating whether the SEI message applies to all subpictures or only to specific subpictures.
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公开(公告)号：US11930175B2
公开(公告)日：2024-03-12
申请号：US17582739
申请日：2022-01-24
Inventor： Zhipin Deng , Li Zhang , Kai Zhang , Hongbin Liu
IPC: H04N19/119 , G06T9/40 , H04N19/107 , H04N19/109 , H04N19/11 , H04N19/127 , H04N19/132 , H04N19/167 , H04N19/169 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/189 , H04N19/60 , H04N19/61 , H04N19/70 , H04N19/96
CPC classification number: H04N19/119 , G06T9/40 , H04N19/107 , H04N19/109 , H04N19/11 , H04N19/127 , H04N19/132 , H04N19/167 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/1883 , H04N19/189 , H04N19/60 , H04N19/61 , H04N19/70 , H04N19/96
Abstract: Methods, systems, and devices for coding or decoding video wherein the picture partition mode is based on block size are described. An example method for video processing includes using a dimension of a virtual pipeline data unit (VPDU) used for a conversion between a video comprising one or more video regions comprising one or more video blocks and a bitstream representation of the video to perform a determination of whether a ternary-tree (TT) or a binary tree (BT) partitioning of a video block of the one or more video blocks is enabled, and performing, based on the determination, the conversion, wherein the dimension is equal to VSize in luma samples, wherein dimensions of the video block are CtbSizeY in luma samples, wherein VSize=min(M, CtbSizeY), and wherein M is a positive integer.
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公开(公告)号：US11930165B2
公开(公告)日：2024-03-12
申请号：US17356321
申请日：2021-06-23
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/176 , H04N19/109 , H04N19/132 , H04N19/159 , H04N19/186 , H04N19/46 , H04N19/513 , H04N19/52
CPC classification number: H04N19/109 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/513 , H04N19/52
Abstract: Techniques for implementing video processing techniques are described. In one example implementation, a method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, a manner in which coding information of the current block is represented in the bitstream representation in part based on whether a condition associated with a size of the current block is satisfied. The method also includes performing the conversion based on the determining.
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