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公开(公告)号：US20210360243A1
公开(公告)日：2021-11-18
申请号：US17389157
申请日：2021-07-29
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC: H04N19/119 , H04N19/176 , H04N19/184 , H04N19/136 , H04N19/186 , H04N19/172 , H04N19/157
Abstract: A method for processing a video includes determining characteristics regarding a current video block; determining an operational state regarding unsymmetrical quad-tree (UQT) splitting based on the determination of the characteristics, wherein the operational state indicates that whether the UQT splitting is enabled or disabled and/or indicates how to split the current video block into four partitions using the UQT splitting; and performing a conversion between the current video block and a bitstream representation of the current video block based on the operational state of UQT splitting.
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公开(公告)号：US20210352315A1
公开(公告)日：2021-11-11
申请号：US17380310
申请日：2021-07-20
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC: H04N19/52 , H04N19/176 , H04N19/423 , H04N19/105
Abstract: Multi-HMVP for affine 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, an affine model for the current block based on affine related information stored in at least one history motion vector prediction (HMVP) buffer of multiple HMVP buffers, the multiple HMVP buffers being used to store affine related information of blocks coded prior the current block in different categories; and performing the conversion by using the derived affine model.
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公开(公告)号：US20210344947A1
公开(公告)日：2021-11-04
申请号：US17374208
申请日：2021-07-13
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/52 , H04N19/176 , H04N19/184 , H04N19/139 , H04N19/105
Abstract: Devices, systems and methods for encoding and decoding digital video using a look-up tables (LUTs) containing motion candidates are described. In a representative aspect, a method of video processing includes maintaining one or more tables, wherein at least one table of the one or more tables is associated with one or more entries, deriving, based on a first set of motion candidates in the at least one table, a second set of motion candidates, and performing, based on the second set of motion candidates, a conversion between a current block of a video and a bitstream representation of the video.
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公开(公告)号：US20210344909A1
公开(公告)日：2021-11-04
申请号：US17376593
申请日：2021-07-15
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Yue WANG
IPC: H04N19/105 , H04N19/176 , H04N19/52 , H04N19/70
Abstract: A video processing method is provided to include: maintaining, for a conversion between blocks of a video and a coded representation of the video, a table of motion information used during the conversion of previous blocks that are processed prior to a current block; and updating the table selectively based on a use of a local illumination coding (LIC) tool for the conversion of the current block, wherein the LIC tool uses a linear model of illumination changes in the current block during the conversion.
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公开(公告)号：US20210329290A1
公开(公告)日：2021-10-21
申请号：US17360868
申请日：2021-06-28
Inventor： Jizheng XU , Jiahao LI , Weijia ZHU , Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/537 , H04N19/513 , H04N19/147 , H04N19/105 , H04N19/176
Abstract: Methods, systems and device for hash-based motion estimation in video coding are described. An exemplary method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, motion information associated with the current block using a hash-based motion search, a size of the current block being M×N, M and N being positive integers and M being not equal to N, applying, based on the motion information and a video picture comprising the current block, a prediction for the current block, and performing, based on the prediction, the conversion.
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Patent Agency Ranking
公开(公告)号：US20210321140A1
公开(公告)日：2021-10-14
申请号：US17357166
申请日：2021-06-24
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/70 , H04N19/117 , H04N19/176 , H04N19/80 , H04N19/186 , H04N19/50 , H04N19/105
Abstract: A video processing method is provided, including: performing a conversion between a coded representation of a video including one or more video regions and the video, wherein the coded representation includes reshaping model information applicable for in-loop reshaping (ILR) of some of the one or more video regions, wherein the reshaping model information provides information for a reconstruction of a video unit of a video region based on a representation in a first domain and a second domain and/or scaling chroma residue of a chroma video unit, wherein the reshaping model information includes a parameter set that includes a first syntax element that derives a number of bits used to represent a second syntax element specifying an absolute delta codeword value from a corresponding bin, and wherein the first syntax element has a value smaller than a threshold.
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公开(公告)号：US20210321095A1
公开(公告)日：2021-10-14
申请号：US17354250
申请日：2021-06-22
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/117 , H04N19/82 , H04N19/17
Abstract: Devices, systems and methods for video processing are described. In an exemplary aspect, a method for video processing includes encoding a video unit of a video as an encoded video unit; generating reconstruction samples from the encoded video unit; performing a clipping operation on the reconstruction samples, wherein a clipping parameter used in the clipping operation is a function of a clipping index and a bit-depth of the reconstruction samples or a bit-depth of samples of the video unit; applying a non-linear adaptive loop filter to an output of the clipping operation; and generating a coded representation of the video using the encoded video unit.
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公开(公告)号：US20210297674A1
公开(公告)日：2021-09-23
申请号：US17320033
申请日：2021-05-13
Inventor： Jizheng XU , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/139 , H04N19/105 , H04N19/52 , H04N19/176
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 representation 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：US20210281876A1
公开(公告)日：2021-09-09
申请号：US17331017
申请日：2021-05-26
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC: H04N19/52 , H04N19/176 , H04N19/105 , H04N19/184 , H04N19/186 , H04N19/117
Abstract: A method for video processing is provided to include performing, for a conversion between a current video block of a video and a coded representation of the video, a motion information refinement process based on samples in a first domain or a second domain; and performing the conversion based on a result of the motion information refinement process, wherein, during the conversion, the samples are obtained for the current video block from a first prediction block in the first domain using an unrefined motion information, at least a second prediction block is generated in the second domain using a refined motion information used for determining a reconstruction block, and reconstructed samples of the current video block are generated based on the at least the second prediction block.
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公开(公告)号：US20210274167A1
公开(公告)日：2021-09-02
申请号：US17322579
申请日：2021-05-17
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Jizheng XU , Yue WANG , Na ZHANG
IPC: H04N19/107 , H04N19/159 , H04N19/176 , H04N19/513 , H04N19/58
Abstract: The present application relates to extended application of combined intra-inter prediction. A method for processing video includes: storing a combined inter-intra prediction (CIIP) flag and/or intra mode of the CIIP mode with motion information in a history-based motion vector prediction (HMVP) table; and performing, at least based on the HMVP table, a conversion between a current block in a video data and a bitstream representation of the current block.
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