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公开(公告)号：US20230020655A1
公开(公告)日：2023-01-19
申请号：US17942921
申请日：2022-09-12
Applicant: Bytedance Inc.
Inventor： Jizheng XU , Ye-kui WANG , Li ZHANG , Kai ZHANG
IPC: H04L9/32 , H04N19/174 , H04N19/167 , H04L9/30 , H04N19/186
Abstract: A method of digital media processing includes performing a conversion between a media segment and a bitstream of the media segment. The conversion conforming to a format rule and an encryption rule. The format rule specifying that verification information, which includes an indication of an integrity of a portion of the media segment, is signaled in the bitstream.
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公开(公告)号：US20220353494A1
公开(公告)日：2022-11-03
申请号：US17852143
申请日：2022-06-28
Inventor： Jizheng XU , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/105 , H04N19/176 , H04N19/423 , H04N19/593
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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公开(公告)号：US20220329842A1
公开(公告)日：2022-10-13
申请号：US17838498
申请日：2022-06-13
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Jizheng XU , Yue WANG
IPC: H04N19/513 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176
Abstract: Devices, systems and methods for sample refinement and filtering method for video coding are described. In an exemplary aspect, a method for video processing includes modifying for a conversion between a block of a video and a bitstream representation of the video, a refinement value for a prediction sample in the block by applying a clipping operation to refinement value. The refinement value is derived based on a gradient value of an optical flow coding process. An output of the clipping operation is within a range. The method also includes refining the prediction sample based on the refinement value and performing the conversion based on the refined prediction sample.
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公开(公告)号：US20220303533A1
公开(公告)日：2022-09-22
申请号：US17824304
申请日：2022-05-25
Inventor： Zhipin DENG , Li ZHANG , Hongbin LIU , Kai ZHANG , Jizheng XU , Yang WANG , Yue WANG
IPC: H04N19/119 , H04N19/137 , H04N19/132 , 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：US20220264143A1
公开(公告)日：2022-08-18
申请号：US17652184
申请日：2022-02-23
Inventor： Jizheng XU , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
Abstract: A method of video processing is described. The method of video processing includes: constructing, for a conversion between a current video block of a current picture of a video and a coded representation of the video, a history-based motion vector predictor (HMVP) table according to a rule, and performing the conversion using the HMVP table, wherein the current video block is coded in the coded representation using a block vector that represents a displacement between the current video block and a region in the current picture used for predicting the current video block; wherein the rule specifies that the constructing uses block vector information of previously processed video blocks in the HMVP table.
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Patent Agency Ranking
公开(公告)号：US20220264137A1
公开(公告)日：2022-08-18
申请号：US17718785
申请日：2022-04-12
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Jizheng XU , Yue WANG
IPC: H04N19/46 , H04N19/70 , H04N19/159 , H04N19/176
Abstract: An example method of video processing includes performing a conversion between a video picture of a video and a bitstream representation of the video. The bitstream representation conforms to a format rule. The format rule specifies that applicability of a Decoder-side Motion Vector Refinement coding tool and a Bi-Directional Optical Flow coding tool for the video picture are indicated separately in the bitstream representation.
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公开(公告)号：US20220256195A1
公开(公告)日：2022-08-11
申请号：US17711294
申请日：2022-04-01
Inventor： Kai ZHANG , Zhipin DENG , Hongbin LIU , Li ZHANG , Jizheng XU
IPC: H04N19/70 , H04N19/46 , H04N19/169 , H04N19/176
Abstract: An example method of video processing includes performing a conversion between a picture of a video that comprises one or more sub-pictures and a bitstream representation of the video. The bitstream representation conforms to a format rule that specifies that information about a sub-picture is included in the bitstream representation based on at least one of: (1) one or more corner positions of the sub-picture, or (2) a dimension of the sub-picture. The format rule further specifies that the information about the sub-picture is positioned after information about a coding tree block in the bitstream representation.
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公开(公告)号：US20220256166A1
公开(公告)日：2022-08-11
申请号：US17717515
申请日：2022-04-11
Inventor： Zhipin DENG , Li ZHANG , Hongbin LIU , Kai ZHANG , Jizheng XU , Yue WANG
IPC: H04N19/137 , H04N19/132 , H04N19/117 , H04N19/80 , H04N19/159 , H04N19/186 , H04N19/176 , H04N19/70
Abstract: A method of video processing is described. The method includes performing a conversion between a current video block of a video and a bitstream representation of the video, wherein, during the conversion, a prediction of the current video block is determined as a weighted sum of two or more predictions of the current video block, and a motion vector storing process for the current video block is determined according to a rule, wherein the current video block uses a partitioning prediction mode that is a first mode which is based on multiple first partitioning schemes or a second mode which is based on multiple second partitioning schemes, and wherein the rule specifies that a process used for determining which motion vector and how many motion vectors are stored is same for the first mode or the second mode.
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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：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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