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公开(公告)号：US20250039441A1
公开(公告)日：2025-01-30
申请号：US18908346
申请日：2024-10-07
Inventor： Junyan HUO , Yanzhuo MA , Fuzheng YANG , Hongqing DU , Ming LI
IPC: H04N19/593 , H04N19/105 , H04N19/11 , H04N19/132 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/70
Abstract: An encoding method, a decoding method and a decoding device are disclosed. The decoding method includes: decoding a bitstream, and determining a first control parameter for the current block; determining a reference sample value of a first color component of the current block; determining a weighting coefficient according to the reference sample value of the first color component of the current block and the first control parameter; determining a predicted value of a second color component of the current block according to the weighting coefficient and a reference sample value of the second color component of the current block; and determining a reconstructed value of a sampling point of the second color component of the current block according to the predicted value of the second color component of the current block.
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公开(公告)号：US20240414341A1
公开(公告)日：2024-12-12
申请号：US18809630
申请日：2024-08-20
Inventor： Junyan HUO , Xiaoyan CHAI , Yanzhuo MA , Fuzheng YANG
IPC: H04N19/126 , H04N19/176 , H04N19/186
Abstract: A method for decoding a video includes: a first colour component neighboring reference value, a second colour component neighboring reference value and a first colour component reconstructed value corresponding to a current block are obtained; a second colour component predicted value corresponding to the current block is generated at least based on a linear model corresponding to factors, where the factors are determined by at least one of a weight coefficient, the first colour component neighboring reference value, or the second colour component neighboring reference value; and the video is decoded based on the second colour component predicted value. The method further includes: neighboring reference samples are downsampled to determine part of reference samples.
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公开(公告)号：US20240244186A1
公开(公告)日：2024-07-18
申请号：US18622202
申请日：2024-03-29
Inventor： Junyan HUO , Yanzhuo MA , Shuai WAN , Fuzheng YANG , Xinwei LI , Qihong RAN
IPC: H04N19/105 , H04N19/176 , H04N19/186
CPC classification number: H04N19/105 , H04N19/176 , H04N19/186
Abstract: Colour component prediction method is provided, which includes that: first reference sample set corresponding to colour component to be predicted of coding block in video image is acquired; when available sample number in first reference sample set is less than preset number, preset component value is taken as predicted value corresponding to the colour component to be predicted; when available sample number in first reference sample set is not less than preset number, first reference sample set is screened to obtain second reference sample set; when available sample number in second reference sample set is equal to preset number, model parameter is determined through second reference sample set, and prediction model corresponding to colour component to be predicted is obtained based on model parameter, prediction model is used for prediction processing of colour component to be predicted to obtain predicted value corresponding to colour component to be predicted.
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公开(公告)号：US20240163470A1
公开(公告)日：2024-05-16
申请号：US18423633
申请日：2024-01-26
Inventor： Junyan HUO , Yanzhuo MA , Shuai WAN , Wei ZHANG , Fuzheng YANG , Qihong RAN
IPC: H04N19/52 , H04N19/109 , H04N19/139 , H04N19/176 , H04N19/184
CPC classification number: H04N19/52 , H04N19/109 , H04N19/139 , H04N19/176 , H04N19/184
Abstract: A method and apparatus for inter prediction. According to the position of a current block in a video picture, first motion information and second candidate motion information is determined, the motion information at least includes a motion vector; it is determined whether the distance between the motion vector of the first motion information and the motion vector of the second candidate motion information is greater than a first threshold; if the determination result is that the distance is less than or equal to the first threshold, the second candidate motion information is updated to obtain second motion information; if the determination result is that the distance is greater than the first threshold, the second candidate motion information is taken as the second motion information; and inter prediction is performed on the current block by using the first motion information and the second motion information.
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公开(公告)号：US20240121405A1
公开(公告)日：2024-04-11
申请号：US18543131
申请日：2023-12-18
Inventor： Yanzhuo MA , Junyan HUO , Shuai WAN , Fuzheng YANG , Ze GUO , Xinwei LI
IPC: H04N19/159 , H04N19/105 , H04N19/132 , H04N19/176
CPC classification number: H04N19/159 , H04N19/105 , H04N19/132 , H04N19/176
Abstract: A method for intra prediction includes: obtaining multiple previously reconstructed neighbouring blocks corresponding to a current processing block; determining prediction modes, that are signalled in a bitstream, corresponding to neighbouring blocks of the multiple previously reconstructed neighbouring blocks, to obtain multiple first prediction modes; if the multiple first prediction modes comprise at least two directional modes, taking directional modes comprised in the multiple first prediction modes as first prediction directions; performing, according to a preset operation rule, operation on multiple first prediction directions of the first prediction directions to obtain second prediction directions; obtaining a prediction mode set according to the second prediction directions and the multiple first prediction modes; and performing intra prediction on the current processing block based on the prediction mode set.
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Patent Agency Ranking
公开(公告)号：US20230052940A1
公开(公告)日：2023-02-16
申请号：US17953250
申请日：2022-09-26
Inventor： Yanzhuo MA , Junyan HUO , Shuai WAN , Fuzheng YANG , Qihong RAN
IPC: H04N19/105 , H04N19/61 , H04N19/119
Abstract: The inter prediction method comprises: determining a prediction mode parameter of a current block; determining a GPM parameter of the current block in response to that the prediction mode parameter indicates that a GPM is used to determine inter prediction of the current block; determining a first prediction value of a first partition of the current block and a second prediction value of a second partition of the current block; determining a weight index of a sample in the current block based on the GPM parameter of the current block; determining a first weight value and a second weight value of the sample in the current block based on the weight index of the sample in the current block; performing weighted combination of the first prediction value and the second prediction value to obtain the inter prediction of the current block.
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公开(公告)号：US20230023856A1
公开(公告)日：2023-01-26
申请号：US17952237
申请日：2022-09-24
Inventor： Junyan HUO , Yanzhuo MA , Shuai WAN , Fuzheng YANG , Qihong RAN , Ruipeng QIU
IPC: H04N19/52 , H04N19/109 , H04N19/176 , H04N19/139 , H04N19/119
Abstract: Provided are inter prediction methods and a decoder. In the method, a bitstream is parsed to determine a prediction mode parameter of a current block; a Geometrical Partition Mode (GPM) parameter of the current block and a merge candidate list of the current block and attribute information of motion information in the merge candidate list are determined when the prediction mode parameter indicates to determine an inter prediction value of the current block by using GPM; a first motion information mapping table of a first partition and a second motion information mapping table of a second partition are determined according to the GPM parameter, merge candidate list and attribute information; and the inter prediction value of the current block is determined based on the first and second motion information mapping tables and merge candidate list.
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公开(公告)号：US20220329786A1
公开(公告)日：2022-10-13
申请号：US17847141
申请日：2022-06-22
Inventor： Junyan HUO , Xinwei LI , Wenhan QIAO , Yanzhuo MA , Shuai WAN , Fuzheng YANG
IPC: H04N19/105 , H04N19/159 , H04N19/18 , H04N19/176
Abstract: A transform method and a decoder. The encoder determines a prediction mode parameter of a current block; determines a cross-component linear model (CCLM) parameter when the prediction mode parameter indicates that CCLM prediction is used for the current block to determine an intra prediction value; determines the intra prediction value of the current block according to the CCLM parameter, and calculates a residual value between the current block and the intra prediction value; determines a low-frequency non-separable transform (LFNST) transform kernel used for the current block according to the CCLM parameter, sets an LFNST index, and signals the LFNST index into a bitstream of a video, when LFNST is used for the current block; and transforms the residual value with the LFNST transform kernel.
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公开(公告)号：US20220232252A1
公开(公告)日：2022-07-21
申请号：US17715468
申请日：2022-04-07
Inventor： Junyan HUO , Yanzhuo MA , Shuai WAN , Fuzheng YANG , Jinkun GUO
IPC: H04N19/593 , H04N19/11 , H04N19/136 , H04N19/176
Abstract: An intra prediction method and device and a computer-readable storage medium, the method comprising: configuring actual angle modes indicated by relative angle numbers, wherein the relative angle numbers are successively represented within a prediction direction range corresponding to a preset width and height relationship; starting from a starting angle, using a corresponding actual angle mode after sampling preset angle sample points, said starting angle being determined according to the width and height relationship of processing blocks and the prediction direction range corresponding to the preset width and height relationship, and actual angles having a one-to-one correspondence with the actual angle modes.
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公开(公告)号：US20220232251A1
公开(公告)日：2022-07-21
申请号：US17715390
申请日：2022-04-07
Inventor： Junyan HUO , Yanzhuo MA , Shuai WAN , Fuzheng YANG , Jinkun GUO
IPC: H04N19/593 , H04N19/11 , H04N19/136 , H04N19/176
Abstract: An intra prediction method and device and a computer-readable storage medium, the method comprising: configuring actual angle modes indicated by relative angle indices, wherein the relative angle indices are successively represented within a prediction direction range corresponding to a preset width and height relationship; starting from a starting angle, using a corresponding actual angle mode after sampling preset angle sample points, said starting angle being determined according to the width and height relationship of processing blocks and the prediction direction range corresponding to the preset width and height relationship, and actual angles having a one-to-one correspondence with the actual angle modes.
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