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公开(公告)号：US20240171779A1
公开(公告)日：2024-05-23
申请号：US18430805
申请日：2024-02-02
发明人： Wei ZHANG , Junyan HUO , Yanzhuo MA
IPC分类号： H04N19/70 , H04N19/119 , H04N19/174 , H04N19/30 , H04N19/96 , H04N19/60
CPC分类号： H04N19/70 , H04N19/119 , H04N19/174 , H04N19/30 , H04N19/96 , H04N19/60
摘要： A point cloud encoding and decoding method, an encoder, and a decoder are provided. The encoder determines a processing order of point cloud data during point cloud encoding. The encoder determines a coordinate-axis-order index corresponding to the processing order. The encoder encodes the coordinate-axis-order index and signals encoded bits into a bitstream. The encoder processes the point cloud data according to the processing order, to obtain point cloud data to-be-encoded. The encoder encodes the point cloud data to-be-encoded and signals encoded bits into the bitstream. The decoder parses a bitstream to obtain a coordinate-axis-order index, determines a processing order of point cloud data during point cloud decoding according to the coordinate-axis-order index, parses the bitstream to obtain recovered data of the point cloud data, and determines a position of coordinate data of the point cloud data in a storage unit of the recovered data according to the processing order.
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公开(公告)号：US20230262251A1
公开(公告)日：2023-08-17
申请号：US18126696
申请日：2023-03-27
发明人： Yanzhuo MA , Ruipeng QIU , Junyan HUO , Shuai WAN , Fuzheng YANG
IPC分类号： H04N19/50 , H04N19/186 , H04N19/176
CPC分类号： H04N19/50 , H04N19/186 , H04N19/176
摘要： An image prediction method includes: an initial prediction value of a to-be-predicted colour component of a current block is determined; a sample associated with a reference colour component of the current block is determined; side information of the current block is determined according to the sample associated with the reference colour component; the initial prediction value is filtered by using a preset network model and the side information of the current block, to obtain a target prediction value of the to-be-predicted colour component of the current block; and the to-be-predicted colour component of the current block is encoded according to the target prediction value.
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公开(公告)号：US20230247204A1
公开(公告)日：2023-08-03
申请号：US18131065
申请日：2023-04-05
发明人： Junyan HUO , Yanzhuo MA , Jianglin WANG , Shuai WAN , Fuzheng YANG
IPC分类号： H04N19/137 , H04N19/159 , H04N19/176 , H04N19/186
CPC分类号： H04N19/137 , H04N19/159 , H04N19/176 , H04N19/186
摘要： The embodiments of the disclosure disclose a method for determining a prediction direction, a decoder and a computer storage medium. The method is implemented by a decoder. The method includes that: a Direct Mode (DM) in a chroma intra prediction mode of a block to be decoded is acquired (S101); and an index number of a prediction direction in a DM derived mode is determined based on an offset N and an index number M of a prediction direction in the DM to determine the DM derived mode (S102).
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公开(公告)号：US20220337866A1
公开(公告)日：2022-10-20
申请号：US17852153
申请日：2022-06-28
发明人： Shuai WAN , Yi XUE , Yanzhuo MA , Junyan HUO , Fuzheng YANG
IPC分类号： H04N19/52 , H04N19/176 , H04N19/577 , H04N19/139 , H04N19/105 , H04N19/46
摘要： An inter-frame prediction method and apparatus, and related devices and a storage medium. The method comprises: determining a first motion vector and a second motion vector of a current block, wherein the first motion vector is a forward motion vector of the current block, and the second motion vector is a backward motion vector of the current block; on the basis of the first motion vector and the second motion vector, determining whether a set condition is satisfied, and obtaining a determination result; setting the value of a BDOF flag according to the determination result; and determining, on the basis of the value of the BDOF flag, an inter-frame prediction value of the current block or at least one sub-block in the current block.
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公开(公告)号：US20220264100A1
公开(公告)日：2022-08-18
申请号：US17661859
申请日：2022-05-03
发明人： Junyan HUO
IPC分类号： H04N19/132 , H04N19/105 , H04N19/119 , H04N19/159 , H04N19/176
摘要： A method for predicting an image is provided. The method include (i) determining prediction parameters of a current block in a bitstream; (ii) determining a matrix-based intra prediction (MIP) input sample of the current block based on neighboring samples of the current block and the prediction parameters; (iii) setting a shifting number parameter (sW) as a first fixed value; (iv) setting a shifting offset parameter (fO) as a second fixed value; and (v) determining an MIP prediction sample of the current block based on an MIP weighting matrix, the MIP input sample, the shifting offset parameter (fO), and the shifting number parameter (sW).
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公开(公告)号：US20220182608A1
公开(公告)日：2022-06-09
申请号：US17677802
申请日：2022-02-22
发明人： Junyan HUO , Yanzhuo MA , Shuai WAN , Fuzheng YANG , Xinwei LI
IPC分类号： H04N19/105 , H04N19/132 , H04N19/176
摘要： A prediction method, apparatus, and a computer storage medium for decoding, the method includes: acquiring reference samples adjacent to at least one side of a decoding block; determining a reference point from the at least one side and determining reference sample positions to be selected corresponding to the at least one side according to a preset number of samples; selecting reference samples corresponding to the reference sample positions to be selected from the reference samples based on the reference sample positions to be selected; and performing prediction decoding on the decoding block based on the selected reference samples.
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公开(公告)号：US20220014772A1
公开(公告)日：2022-01-13
申请号：US17483507
申请日：2021-09-23
发明人： Shuai WAN , Junyan HUO , Yanzhuo MA , Wei ZHANG
IPC分类号： H04N19/50 , H04N19/186
摘要： A method for picture prediction, an encoder, and a decoder are provided. The method includes the following. An initial predicted value of a colour component to-be-predicted of a current block in a picture is obtained through a prediction model. The initial predicted value is filtered and a target predicted value of the colour component to-be-predicted of the current block is obtained.
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公开(公告)号：US20210409783A1
公开(公告)日：2021-12-30
申请号：US17468477
申请日：2021-09-07
发明人： Shuai WAN , Mingze WANG , Yanzhuo MA , Junyan HUO , Fuzheng YANG
IPC分类号： H04N19/82 , H04N19/186 , H04N19/119 , H04N19/176
摘要： Provided are a method and apparatus for in-loop filtering and a computer storage medium. The method includes that: a picture to be filtered is acquired, the picture to be filtered being generated in a video coding process of an original picture in a video to be coded, the video to be coded including at least one original picture and the at least one original picture including the original picture; fused information of the picture to be filtered is determined, the fused information being obtained by fusing at least two colour components of the picture to be filtered and corresponding auxiliary information; and in-loop filtering is performed on the picture to be filtered based on the fused information to obtain at least one colour component of the picture subjected to the in-loop filtering.
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公开(公告)号：US20210243431A1
公开(公告)日：2021-08-05
申请号：US17234639
申请日：2021-04-19
发明人： Junyan HUO , Yanzhuo MA , Shuai WAN , Fuzheng YANG , Xinwei LI
IPC分类号： H04N19/105 , H04N19/132 , H04N19/176
摘要： A prediction method for decoding and apparatus, and a computer storage medium are provided. The method includes: acquiring reference samples adjacent to at least one side of a decoding block; determining a reference point from the at least one side and determining reference sample positions to be selected corresponding to the at least one side according to a preset number of samples; selecting reference samples corresponding to the reference sample positions to be selected from the reference samples based on the reference sample positions to be selected; and performing prediction decoding on the decoding block based on the selected reference samples.
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公开(公告)号：US20210218971A1
公开(公告)日：2021-07-15
申请号：US17211636
申请日：2021-03-24
发明人： Shuai WAN , Junyan HUO , Yanzhuo MA , Fuzheng YANG , Jinkun GUO , Haixin WANG
IPC分类号： H04N19/159 , H04N19/184 , H04N19/172 , G06F5/01
摘要： Picture coding and decoding methods, an encoder, a decoder and a storage medium are provided. The encoder, before performing coding processing according to a matrix-based intra prediction (MIP) mode, sets initial right shift parameters corresponding to different sizes and different MIP mode numbers as an uniform offset parameter, the offset parameter indicating a number of right shifting bits of a predicted value, and when performing coding processing according to the MIP mode, performs coding processing according to the offset parameter. The decoder, before performing decoding processing according to an MIP mode, sets initial right shift parameters corresponding to different sizes and different MIP mode numbers as an uniform offset parameter, the offset parameter indicating a number of right shifting bits of a predicted value, and when performing decoding processing according to the MIP mode, performs decoding processing according to the offset parameter.
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