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公开(公告)号：US20230362367A1
公开(公告)日：2023-11-09
申请号：US18333067
申请日：2023-06-12
发明人： Anubhav SINGH , Aviral AGRAWAL , Raj Narayana GADDE , H Keerthan BHAT , Yinji PIAO , Minwoo PARK , Kwangpyo CHOI
IPC分类号： H04N19/119 , H04N19/117 , H04N19/80 , H04N19/42 , H04N19/176
CPC分类号： H04N19/119 , H04N19/117 , H04N19/80 , H04N19/42 , H04N19/176
摘要： An example method for training AI models for in-loop filters includes generating a training dataset by passing a video through a codec pipeline, extracting one or more predefined block features from the training dataset, creating a plurality of clusters based on the extracted one or more predefined block features from the training dataset, dividing the plurality of clusters into a sub-plurality of clusters based on the extracted one or more predefined block features and an intra-cluster variation threshold, and supplying the sub-plurality of clusters separately into a plurality of AI models based on the extracted one or more predefined block features.
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22.发明公开公开(公告)号：US20230344991A1
公开(公告)日：2023-10-26
申请号：US18346685
申请日：2023-07-03
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 , H04N19/159 , H04N19/176 , H04N19/177 , H04N19/91
CPC分类号： H04N19/105 , H04N19/159 , H04N19/176 , H04N19/177 , H04N19/91
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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23.发明公开公开(公告)号：US20230232038A1
公开(公告)日：2023-07-20
申请号：US18185982
申请日：2023-03-17
发明人： Seungsoo JEONG , Minwoo PARK
IPC分类号： H04N19/523 , H04N19/103 , H04N19/176 , H04N19/513
CPC分类号： H04N19/523 , H04N19/103 , H04N19/176 , H04N19/513
摘要： Provided is a video decoding method including: obtaining, from a sequence parameter set, sequence merge mode with motion vector difference (sequence MMVD) information indicating whether an MMVD mode is applicable in a current sequence; when the MMVD mode is applicable according to the sequence MMVD information, obtaining, from a bitstream, first MMVD information indicating whether the MMVD mode is applied in a first inter prediction mode for a current block included in the current sequence; when the MMVD mode is applicable in the first inter prediction mode according to the first MMVD information, reconstructing a motion vector of the current block which is to be used in the first inter prediction mode, by using a distance of a motion vector difference and a direction of a motion vector difference obtained from the bitstream; and reconstructing the current block by using the motion vector of the current block.
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公开(公告)号：US20230044532A1
公开(公告)日：2023-02-09
申请号：US17880799
申请日：2022-08-04
发明人： Quockhanh DINH , Kwangpyo CHOI , Minwoo PARK , Yinji PIAO
IPC分类号： H04N19/86 , H04N19/80 , H04N19/182 , H04N19/187 , H04N19/117
摘要： An image processing method and an image processing apparatus are provided to obtain input data for deblocking filtering based on deblocking filtering target pixels of at least one line perpendicular to a boundary line of blocks and encoding information about the deblocking filtering target pixels of at least one line, obtain a feature map of the input data by inputting the input data to a first neural network, obtain a deblocking filter coefficient by inputting the feature map to a second neural network, obtain a deblocking filter compensation value by inputting the feature map to a third neural network, obtain a deblocking filter strength by inputting the input data to a fourth neural network, obtain deblocking filtered pixels by performing deblocking filtering on the deblocking filtering target pixels of the at least one line using the deblocking filter coefficient, the deblocking filter compensation value, and the deblocking filter strength.
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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：US20220239900A1
公开(公告)日：2022-07-28
申请号：US17275824
申请日：2019-09-19
发明人： Anish TAMSE , Minwoo PARK , Kiho CHOI
IPC分类号： H04N19/105 , H04N19/136 , H04N19/157 , H04N19/176
摘要： Provided are a video decoding method and device, in which, during video encoding and decoding processes: information about whether to apply an affine mode to a current block is received; when the information about whether to apply the affine mode indicates that the affine mode is to be applied, an affine parameter group is determined based on a history-based affine parameter group candidate list in which affine parameter groups of one or more blocks reconstructed in an affine mode before the current block are stored; and prediction on the current block is performed based on the affine parameter group.
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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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29.发明申请公开(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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