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公开(公告)号：US11924474B2
公开(公告)日：2024-03-05
申请号：US17973810
申请日：2022-10-26
Applicant: Bytedance Inc.
Inventor： Li Zhang , Ye-Kui Wang , Kai Zhang
IPC: H04N19/70 , H04N19/105 , H04N19/174 , H04N19/46
CPC classification number: H04N19/70 , H04N19/105 , H04N19/174 , H04N19/46
Abstract: Systems, methods and apparatus for video processing are described. The video processing may include video encoding, video decoding, or video transcoding. One 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 format rule. The format rule specifies that a first syntax element that indicates whether motion vector difference for a particular reference picture list (RPL) is indicated is conditionally included in the bitstream based on (i) whether a second syntax element indicating whether an RPL information is included in a picture header and/or (ii) a number of reference pictures in the particular RPL in case that the RPL information is present in the picture header.
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公开(公告)号：US11924463B2
公开(公告)日：2024-03-05
申请号：US17523232
申请日：2021-11-10
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/563 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/513
CPC classification number: H04N19/563 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/513
Abstract: A video processing method is provided to include determining, for a current video block of a video, a final prediction block for the current video block by refining one or more initial predictions for the current video block using an optical flow calculation based on a gradient of initial prediction samples according to a precision rule; and performing a conversion between the current video block and a coded representation using the final prediction block, wherein the optical flow calculation includes a prediction refinement with optical flow (PROF) procedure or a bi-directional optical flow (BDOF) procedure, wherein the precision rule specifies to use a same precision for representing the gradient for both the PROF procedure and the BDOF procedure.
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133.发明授权公开(公告)号：US11924446B2
公开(公告)日：2024-03-05
申请号：US18078641
申请日：2022-12-09
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang
IPC: H04N19/70 , H04N19/169 , H04N19/172 , H04N19/182 , H04N19/184 , H04N19/30 , H04N19/597
CPC classification number: H04N19/184 , H04N19/172 , H04N19/182 , H04N19/188 , H04N19/30 , H04N19/597 , H04N19/70
Abstract: A method of processing video data includes performing a conversion between a video and a bitstream of the video. The bitstream comprises one or more layers comprising one or more pictures comprising one or more subpictures according to a rule which specifies that, responsive to a condition, a selective processing of a first supplemental enhancement information network abstraction layer, SEI NAL, unit of a target output subpicture sub-bitstream that is extracted during a subpicture sub-bitstream extraction process.
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公开(公告)号：US20240073426A1
公开(公告)日：2024-02-29
申请号：US18498665
申请日：2023-10-31
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu
IPC: H04N19/14 , H04N19/117 , H04N19/124 , H04N19/132 , 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 including samples on one side of the edge and/or a second quantization information for a second video region including 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：US20240073417A1
公开(公告)日：2024-02-29
申请号：US18500495
申请日：2023-11-02
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/119 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/52
CPC classification number: H04N19/119 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/52
Abstract: Devices, systems and methods for digital video coding, which includes using default motion candidates for video coding, are described. An exemplary method for video processing includes determining, for a conversion between a block of a video and a bitstream representation of the video, weights to use for a weighted average of prediction samples along an edge of two partitions of the block. The two partitions are generated according to a geometry partition mode, and the weights are selected from a first weighting factor group that at least one of the weights is equal to 0 or 1. The method also includes performing the conversion based on the determining.
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Patent Agency Ranking
公开(公告)号：US11917197B2
公开(公告)日：2024-02-27
申请号：US17680979
申请日：2022-02-25
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/593 , H04N19/11 , H04N19/124 , H04N19/157 , H04N19/176
CPC classification number: H04N19/593 , H04N19/11 , H04N19/124 , H04N19/157 , H04N19/176
Abstract: Extensions of intra coding modes in video coding are described. One example is a method for video processing, comprising: generating, for a conversion between a current video block of a video and a bitstream representation of a video, a set of extended intra prediction modes (IPMs) associated with the current video block by revising a set of existing IPMs to include at least one new coding method, wherein the new coding method is different from coding methods in the existing IPMs and is to be treated as IPM; and performing the conversion based on the set of extended IPMs.
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公开(公告)号：US20240064315A1
公开(公告)日：2024-02-22
申请号：US18471485
申请日：2023-09-21
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/46 , H04N19/172 , H04N19/186
CPC classification number: H04N19/46 , H04N19/172 , H04N19/186
Abstract: Methods, systems, and devices for implementing an adaptive color transform (ACT) during image/video encoding and decoding, including: 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. 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. 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：US11910022B2
公开(公告)日：2024-02-20
申请号：US17946637
申请日：2022-09-16
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang
IPC: H04N19/70 , H04N19/132 , H04N19/172 , H04N19/30 , H04N19/423 , H04N19/593 , H04N19/186 , H04N19/174
CPC classification number: H04N19/70 , H04N19/132 , H04N19/172 , H04N19/174 , H04N19/186 , H04N19/30 , H04N19/423 , H04N19/593
Abstract: Methods and apparatus for video processing, including coding and decoding, are described. One example video processing method includes performing a conversion between a video having one or more video layers and a bitstream of the video according to a format rule, and wherein the format rule specifies that a value of a flag that indicates whether to remove pictures previously decoded and stored in a decoded picture buffer from the decoded picture buffer when decoding an access unit of a certain type is included in the bitstream.
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公开(公告)号：US11909967B2
公开(公告)日：2024-02-20
申请号：US17723175
申请日：2022-04-18
Inventor： Kai Zhang , Zhipin Deng , Hongbin Liu , Li Zhang , Jizheng Xu
IPC: H04N19/00 , H04N19/119 , H04N19/132 , H04N19/176 , H04N19/70 , H04N19/117 , H04N19/186 , H04N19/46 , H04N19/82
CPC classification number: H04N19/119 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/70 , H04N19/82
Abstract: An example method of video processing includes determining, for a conversion between a block of a first sub-picture of a video and a bitstream representation of the video, whether to apply a deblocking process across an edge between the block and a neighboring block of a second sub-picture based on whether a loop filtering process is allowed across subpicture boundaries. The method also includes performing the conversion based on the determining.
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公开(公告)号：US11909966B2
公开(公告)日：2024-02-20
申请号：US17723089
申请日：2022-04-18
Inventor： Kai Zhang , Zhipin Deng , Hongbin Liu , Li Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/119 , H04N19/117 , H04N19/132 , H04N19/82 , H04N19/186 , H04N19/46 , H04N19/176
CPC classification number: H04N19/119 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/70 , H04N19/82
Abstract: An example method of video processing includes performing a conversion between a picture of a video and a bitstream representation of the video. The picture includes one or more sub-pictures, and the bitstream representation conforms to a format rule that specifies that a length of a syntax element is equal to Ceil(Log 2(SS)) bits. SS is greater than 0, and the syntax element indicating a horizontal or a vertical position of a top-left corner of a coding tree unit of a sub-picture of the picture.
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