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公开(公告)号：US11973941B2
公开(公告)日：2024-04-30
申请号：US17827239
申请日：2022-05-27
发明人： Narae Choi , Minwoo Park , Chanyul Kim , Minsoo Park , Yumi Sohn , Seungsoo Jeong , Kiho Choi , Woongil Choi , Anish Tamse , Yinji Piao
IPC分类号： H04N11/02 , H04N19/11 , H04N19/176
CPC分类号： H04N19/11 , H04N19/176
摘要： Provided are a video decoding method and apparatus and a video encoding method and apparatus which determine whether to use a Most Probable Mode (MPM) list, based on encoding information of a current block, obtain, from a bitstream, intra prediction mode index information indicating one of candidate intra prediction modes included in the MPM list, and determine an intra prediction mode of the current block by using the obtained intra prediction mode index information.
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公开(公告)号：US11968370B2
公开(公告)日：2024-04-23
申请号：US17980986
申请日：2022-11-04
发明人： Minsoo Park , Gahyun Ryu , Minwoo Park , Seungsoo Jeong , Kiho Choi , Narae Choi , Woongil Choi , Anish Tamse , Yinji Piao
IPC分类号： H04N19/96 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186
CPC分类号： H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/96
摘要： Provided are a method and apparatus, which, during video encoding and decoding processes, obtain chroma intra prediction mode information about a current chroma block, when the chroma intra prediction mode information indicates a direct mode (DM), determine a luma block including a luma sample corresponding to a chroma sample at a lower-right location with respect to a center of the current chroma block, determine a chroma intra prediction mode of the current chroma block based on an intra prediction mode of the determined luma block, and perform intra prediction on the current chroma block, based on the determined chroma intra prediction mode.
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公开(公告)号：US11949905B2
公开(公告)日：2024-04-02
申请号：US17981597
申请日：2022-11-07
发明人： Anish Tamse , Minwoo Park , Minsoo Park
IPC分类号： H04N19/00 , H04N19/107 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/40 , H04N19/513 , H04N19/52
CPC分类号： H04N19/52 , H04N19/107 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/40 , H04N19/513
摘要： Provided are a video decoding method and apparatus for, in a video encoding and decoding procedure, when a merge candidate list of a current block is configured, determining whether the number of merge candidates included in the merge candidate list is greater than 1 and is smaller than a predetermined maximum merge candidate number, when the number of the merge candidates included in the merge candidate list is greater than 1 and is smaller than the predetermined maximum merge candidate number, determining an additional merge candidate by using a first merge candidate and a second merge candidate of the merge candidate list of the current block, configuring the merge candidate list by adding the determined additional merge candidate to the merge candidate list, and performing prediction on the current block, based on the merge candidate list.
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公开(公告)号：US11943472B2
公开(公告)日：2024-03-26
申请号：US17962221
申请日：2022-10-07
发明人： Seungsoo Jeong , Chanyul Kim , Minsoo Park , Minwoo Park , Kiho Choi , Narae Choi , Woongil Choi , Anish Tamse , Yinji Piao
IPC分类号： H04N19/577 , H04N19/105 , H04N19/119 , H04N19/44
CPC分类号： H04N19/577 , H04N19/105 , H04N19/119 , H04N19/44
摘要： A video decoding method includes determining, based on an area of a current block, whether a multi-prediction combination mode for predicting the current block by combining prediction results obtained according to a plurality of prediction modes is applied to the current block, when the multi-prediction combination mode is applied to the current block, determining the plurality of prediction modes to be applied to the current block, generating a plurality of prediction blocks of the current block, according to the plurality of prediction modes, and determining a combined prediction block of the current block, by combining the plurality of prediction blocks according to respective weights.
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公开(公告)号：US11910008B2
公开(公告)日：2024-02-20
申请号：US17962245
申请日：2022-10-07
发明人： Seungsoo Jeong , Chanyul Kim , Minsoo Park , Minwoo Park , Kiho Choi , Narae Choi , Woongil Choi , Anish Tamse , Yinji Piao
IPC分类号： H04N19/105 , H04N19/119 , H04N19/44 , H04N19/577
CPC分类号： H04N19/577 , H04N19/105 , H04N19/119 , H04N19/44
摘要： A video decoding method includes determining, based on an area of a current block, whether a multi-prediction combination mode for predicting the current block by combining prediction results obtained according to a plurality of prediction modes is applied to the current block, when the multi-prediction combination mode is applied to the current block, determining the plurality of prediction modes to be applied to the current block, generating a plurality of prediction blocks of the current block, according to the plurality of prediction modes, and determining a combined prediction block of the current block, by combining the plurality of prediction blocks according to respective weights.
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公开(公告)号：US11902513B2
公开(公告)日：2024-02-13
申请号：US17826898
申请日：2022-05-27
发明人： Narae Choi , Minwoo Park , Chanyul Kim , Minsoo Park , Yumi Sohn , Seungsoo Jeong , Kiho Choi , Woongil Choi , Anish Tamse , Yinji Piao
IPC分类号： H04N11/02 , H04N19/11 , H04N19/176
CPC分类号： H04N19/11 , H04N19/176
摘要： Provided are a video decoding method and apparatus and a video encoding method and apparatus which determine whether to use a Most Probable Mode (MPM) list, based on encoding information of a current block, obtain, from a bitstream, intra prediction mode index information indicating one of candidate intra prediction modes included in the MPM list, and determine an intra prediction mode of the current block by using the obtained intra prediction mode index information.
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公开(公告)号：US20230388510A1
公开(公告)日：2023-11-30
申请号：US18328572
申请日：2023-06-02
发明人： Narae CHOI , Minwoo Park , Minsoo Park , Seungsoo Jeong , Kiho Choi , Woongil Choi , Anish Tamse , Yinji Piao
IPC分类号： H04N19/132 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/80
CPC分类号： H04N19/132 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/80
摘要： Provided is a video decoding method including: obtaining, from a bitstream, intra prediction mode information indicating an intra prediction mode of a current block; determining an interpolation filter set to be used in prediction of the current block, based on at least one of a size of the current block and the intra prediction mode indicated by the intra prediction mode information; determining a reference location to which a current sample of the current block refers according to the intra prediction mode; determining, in the interpolation filter set, an interpolation filter that corresponds to the reference location; determining a prediction value of the current sample, according to reference samples of the current block and the interpolation filter; and reconstructing the current block, based on the prediction value of the current sample.
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公开(公告)号：US20230038846A1
公开(公告)日：2023-02-09
申请号：US17962245
申请日：2022-10-07
发明人： Seungsoo JEONG , Chanyul Kim , Minsoo Park , Minwoo Park , Kiho Choi , Narae Choi , Woongil Choi , Anish Tamse , Yinji Piao
IPC分类号： H04N19/577 , H04N19/105 , H04N19/119 , H04N19/44
摘要： A video decoding method includes determining, based on an area of a current block, whether a multi-prediction combination mode for predicting the current block by combining prediction results obtained according to a plurality of prediction modes is applied to the current block, when the multi-prediction combination mode is applied to the current block, determining the plurality of prediction modes to be applied to the current block, generating a plurality of prediction blocks of the current block, according to the plurality of prediction modes, and determining a combined prediction block of the current block, by combining the plurality of prediction blocks according to respective weights.
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公开(公告)号：US11570461B2
公开(公告)日：2023-01-31
申请号：US17284354
申请日：2019-10-10
发明人： Seungsoo Jeong , Minwoo Park , Kiho Choi , Anish Tamse
IPC分类号： H04N7/12 , H04N19/513 , H04N19/109 , H04N19/139 , H04N19/176 , H04N19/91 , H04N19/70
摘要： Provided is a video decoding method including: generating a merge candidate list including neighboring blocks referred to predict a motion vector of a current block in a skip mode or a merge mode; when a merge motion vector difference is used according to merge difference mode information indicating whether the merge motion vector difference and a motion vector determined from the merge candidate list are used, determining a base motion vector from a candidate determined among the merge candidate list based on merge candidate information; determining the motion vector of the current block by using the base motion vector and a merge motion vector difference of the current block, the merge motion vector difference being determined by using a distance index and direction index of the merge motion vector difference of the current block; and reconstructing the current block by using the motion vector of the current block.
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公开(公告)号：US11558622B2
公开(公告)日：2023-01-17
申请号：US17282946
申请日：2019-10-08
发明人： Anish Tamse , Minwoo Park
IPC分类号： H04N19/137 , H04N19/105 , H04N19/13 , H04N19/159 , H04N19/176 , H04N19/46
摘要： Provided are a video decoding method and apparatus, in which, during video encoding and decoding processes: in which a first bin of a sub-block merge index indicating a candidate motion vector of a sub-block merge mode is obtained, the first bin being arithmetic-encoded using a context model, a second arithmetic-encoded in a bypass mode is obtained based on a first value obtained by arithmetic-decoding the first bin by using the context model, a second value is obtained by arithmetic-decoding the second bin in the bypass mode, and prediction on a current block is performed in the sub-block merge mode, based on the first value and the second value.
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