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公开(公告)号：US20220295052A1
公开(公告)日：2022-09-15
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： 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：US20220141484A1
公开(公告)日：2022-05-05
申请号：US17573974
申请日：2022-01-12
发明人： Seungsoo JEONG , Minsoo PARK , Minwoo PARK , Kiho CHO , Yinji PIAO
IPC分类号： H04N19/56 , H04N19/176 , H04N19/109
摘要： Provided is a video decoding method including: determining a prediction mode of a current block to be one of a skip mode and a merge mode; when a motion vector, which is determined from a merge candidate list of the current block, and a merge motion vector difference are to be used, obtaining merge candidate information indicating one candidate in the merge candidate list by performing entropy encoding on a bitstream by applying one piece of context information; determining a base motion vector from one candidate determined from the merge candidate list, based on the merge candidate information; and determining a motion vector of the current block by using a distance index of a merge motion vector difference of the current block and a direction index of the merge motion vector difference to use the base motion vector and the merge motion vector difference.
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公开(公告)号：US20220109834A1
公开(公告)日：2022-04-07
申请号：US17416984
申请日：2019-12-20
发明人： Seungsoo JEONG , Anish TAMSE , Minsoo PARK , Minwoo PARK
IPC分类号： H04N19/119 , H04N19/176 , H04N19/105 , H04N19/52 , H04N19/91
摘要： According to an embodiment, provided is an image decoding method including obtaining, from a bitstream, information related to a triangle prediction mode for a current block; splitting the current block into two triangular partitions, according to the information related to a triangle prediction mode; generaling a merge list for a triangle prediction mode, according to a merge list generation method in a regular merge mode; selecting a motion vector for the two triangular partitions according to information indicating the motion vector from among motion vectors included in the merge list; obtaining, from a reference image, prediction blocks corresponding to the two triangular partitions, based on the motion vector; and reconstructing the current block, based on a final prediction block.
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公开(公告)号：US20220014730A1
公开(公告)日：2022-01-13
申请号：US17294164
申请日：2019-11-15
发明人： Seungsoo JEONG , Gahyun RYU , Minsoo Park , Minwoo PARK , Kiho CHOI , Narae CHOI , Woongil CHOI , Anish TAMSE , Yinji PIAO
IPC分类号： H04N19/105 , H04N19/91 , H04N19/159 , H04N19/177 , H04N19/176
摘要： Disclosed is an image decoding method according to an embodiment, the image decoding method including: obtaining a first reference block and a second reference block, for bi-directional prediction of a current block; obtaining, from a bitstream, weight information for combining the first reference block with the second reference block; performing entropy decoding on the weight information to obtain a weight index; combining the first reference block with the second reference block according to a candidate value indicated by the weight index among candidate values included in a weight candidate group; and reconstructing the current block based on a result of the combining, wherein a first binary value corresponding to the weight index is entropy-decoded based on a context model, and the remaining binary value corresponding to the weight index is entropy-decoded by a bypass method.
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公开(公告)号：US20210266557A1
公开(公告)日：2021-08-26
申请号：US17251305
申请日：2019-06-11
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 , H04N19/80 , H04N19/159 , H04N19/46 , H04N19/176
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：US20210235114A1
公开(公告)日：2021-07-29
申请号：US17228234
申请日：2021-04-12
发明人： Seungsoo JEONG , Minwoo PARK , Yumi SOHN , Kiho CHOI
IPC分类号： H04N19/53 , H04N19/109 , H04N19/176
摘要： Provided are a video encoding and decoding method and apparatus for obtaining, in a video encoding and decoding process, motion vector resolution information from a bit stream by using a high-level syntax which is a group of information that is applied to a predefined data unit group; determining a motion vector resolution of a current block included in the predefined data unit group based on the motion vector resolution information; determining a prediction motion vector of the current block to be a motion vector of a candidate block from among at least one candidate block, based on the motion vector resolution of the current block; and determining a motion vector of the current block by using the prediction motion vector of the current block.
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公开(公告)号：US20200351517A1
公开(公告)日：2020-11-05
申请号：US16934228
申请日：2020-07-21
发明人： Seungsoo JEONG , Minwoo Park , Yumi Sohn , Kiho Choi
IPC分类号： H04N19/53 , H04N19/176 , H04N19/109
摘要： Provided are a video encoding and decoding method and apparatus for obtaining, in a video encoding and decoding process, motion vector resolution information from a bit stream by using a high-level syntax which is a group of information that is applied to a predefined data unit group; determining a motion vector resolution of a current block included in the predefined data unit group based on the motion vector resolution information; determining a prediction motion vector of the current block to be a motion vector of a candidate block from among at least one candidate block, based on the motion vector resolution of the current block; and determining a motion vector of the current block by using the prediction motion vector of the current block.
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公开(公告)号：US20200314446A1
公开(公告)日：2020-10-01
申请号：US16954639
申请日：2019-01-15
发明人： Anish TAMSE , Minwoo PARK , Seungsoo JEONG , Jinyoung LEE
IPC分类号： H04N19/52 , H04N19/59 , H04N19/176 , H04N19/122 , H04N19/186
摘要： Provided are a method and apparatus for, in a video encoding and decoding procedure, selecting a candidate motion vector of a current block from a motion vector candidate list of the current block, determining a motion vector of the current block by performing a motion search based on the candidate motion vector, performing motion compensation by using the determined motion vector of the current block, and applying local luminance compensation to the current block based on whether the local luminance compensation is to be applied to the current block, wherein a cost function used for performing the motion search is determined based on whether the local luminance compensation is to be applied to the current block.
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公开(公告)号：US20230047368A1
公开(公告)日：2023-02-16
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： H04N19/132 , H04N19/96 , H04N19/186 , H04N19/176 , H04N19/159
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：US20230043259A1
公开(公告)日：2023-02-09
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
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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