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公开(公告)号：US20220256146A1
公开(公告)日：2022-08-11
申请号：US17723175
申请日：2022-04-18
Inventor： Kai ZHANG , Zhipin DENG , Hongbin LIU , Li ZHANG , Jizheng XU
IPC: H04N19/117 , H04N19/82 , H04N19/132 , H04N19/186 , H04N19/176 , H04N19/46 , H04N19/70
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：US11412268B2
公开(公告)日：2022-08-09
申请号：US17405304
申请日：2021-08-18
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/70 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/132 , H04N19/17 , H04N19/30
Abstract: Devices, systems and methods related to management of syntax flags with respect chroma formats in video processing are described. In one representative aspect, a video decoding method includes determining, based on a chroma format of a video comprising a region, whether one or more syntax flags applicable to the region of the video are absent in a syntax structure of a coded representation of the video. The one or more syntax flags are indicative of usage of a luma-dependent chroma residue scaling coding step for representing the region in the coded representation. The luma-dependent chroma residue scaling coding step comprises a scaling process in which a scaling coefficient is derived based on reconstructed luma samples and the scaling process is applied to a chroma residue. The method also includes generating one or more decoded video blocks of the video region by parsing the coded representation according to the determining.
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公开(公告)号：US11412232B2
公开(公告)日：2022-08-09
申请号：US17011131
申请日：2020-09-03
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/107 , H04N19/176 , H04N19/105 , H04N19/117 , H04N19/119 , H04N19/583 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/132
Abstract: Devices, systems and methods for applying intra-block copy (IBC) in video coding are described. In general, methods for integrating IBC with existing motion compensation algorithms for video encoding and decoding are described. In a representative aspect, a method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using a motion compensation algorithm, and encoding, based on the determining, the current block by selectively applying an intra-block copy to the current block. In a representative aspect, another method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using an intra-block copy, and encoding, based on the determining, the current block by selectively applying a motion compensation algorithm to the current block.
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公开(公告)号：US20220248063A1
公开(公告)日：2022-08-04
申请号：US17716447
申请日：2022-04-08
Applicant: Bytedance Inc.
Inventor： Weijia ZHU , Li ZHANG , Jizheng XU , Kai ZHANG
IPC: H04N19/82 , H04N19/186 , H04N19/117 , H04N19/70
Abstract: An example method of video processing includes making a determination, for a conversion between a current video block of a video and a bitstream representation of the video, whether a cross-component adaptive loop filtering tool is enabled for the current video block based on a color property of the video. The method also includes performing the conversion according to the determination.
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公开(公告)号：US11405633B1
公开(公告)日：2022-08-02
申请号：US17356275
申请日：2021-06-23
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/513 , H04N19/186 , H04N19/176
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 modified motion vector set; and performing the conversion based on the modified motion vector set. Due to the current block satisfying a condition, the modified motion vector set is a modified version of a motion vector set associated with the current block.
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Patent Agency Ranking
公开(公告)号：US20220217363A1
公开(公告)日：2022-07-07
申请号：US17700086
申请日：2022-03-21
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/176 , H04N19/107 , H04N19/583 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/105 , H04N19/117 , H04N19/119
Abstract: A method of decoding visual information from a coded representation of the visual information includes determining that a block being decoded representing a portion of an encoded picture of visual information is coded using a motion candidate associated with a motion vector, wherein the motion vector is derived as a weighted average of a plurality of motion vectors, wherein all of the plurality of motion vectors refer to a same picture type, and wherein a first picture type represents a current picture and a second picture type represents a reference pictures different from the current picture and decoding the block being decoded by using the motion candidate.
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公开(公告)号：US11381848B2
公开(公告)日：2022-07-05
申请号：US17090276
申请日：2020-11-05
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Hsiao Chiang Chuang , Yue Wang
IPC: H04N19/96 , H04N19/119 , H04N19/176 , H04N19/184 , H04N19/189 , H04N19/169 , H04N19/46
Abstract: Methods, systems and devices for using flexible and efficient partitioning techniques are described. An exemplary method for visual media decoding includes applying, to a current visual media block, a partitioning process that splits the current visual media block into exactly four sub-blocks including at least one sub-block that has a size different from half of a width of the current visual media block times half of a height of the current visual media block, decoding, based on a bitstream representation, the four sub-blocks, and decoding, based on the four sub-blocks and the partitioning process, the current visual media block.
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公开(公告)号：US20220210447A1
公开(公告)日：2022-06-30
申请号：US17692782
申请日：2022-03-11
Applicant: Bytedance Inc.
Inventor： Li ZHANG , Weijia ZHU , Jizheng XU
IPC: H04N19/186 , H04N19/159 , H04N19/176 , H04N19/169
Abstract: In one example aspect, a method of video processing includes performing a conversion between a current block of a video and a bitstream of the video using a palette mode in which a palette of representative sample values is used for coding the current block. During the conversion, one or multiple predictor palettes are used for predicting the palette of representative sample values, and wherein updating of the one or multiple predictor palettes after the conversion of the current block is disabled according to a rule based on a characteristic of the current block.
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公开(公告)号：US20220210444A1
公开(公告)日：2022-06-30
申请号：US17386519
申请日：2021-07-27
Inventor： Jizheng XU , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/176 , H04N19/174 , H04N19/52 , H04N19/593
Abstract: A method of visual media processing includes determining a size of a buffer to store reference samples for prediction in an intra block copy mode; and performing a conversion between a current video block of visual media data and a bitstream of the current video block, using the reference samples stored in the buffer, wherein the conversion is performed in the intra block copy mode which is based on motion information related to a reconstructed block located in same video region with the current video block without referring to a reference picture.
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公开(公告)号：US11375228B1
公开(公告)日：2022-06-28
申请号：US17356275
申请日：2021-06-23
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/513 , H04N19/186 , H04N19/176
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 modified motion vector set; and performing the conversion based on the modified motion vector set. Due to the current block satisfying a condition, the modified motion vector set is a modified version of a motion vector set associated with the current block.
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