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公开(公告)号：US20240314294A1
公开(公告)日：2024-09-19
申请号：US18674107
申请日：2024-05-24
发明人： Yinji PIAO , Anish TAMSE , Minsoo PARK , Minwoo PARK , Seungsoo JEONG , Kiho CHOI , Narae CHOI , Woongil CHOI
IPC分类号： H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/196
CPC分类号： H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/196
摘要： Proposed is a video decoding method including: determining a weight of a residual sample of a Cr component and a weight of a residual sample of a Cb component, based on a prediction type of a coding unit, cbf information for the Cr component, and cbf information of the Cb component, obtaining a chroma joint residual sample of a current block from a bitstream, reconstructing the residual sample of the Cr component by using the chroma joint residual sample of the current block and the weight of the residual sample of the Cr component, and reconstructing the residual sample of the Cb component by using the chroma joint residual sample of the current block and the weight of the residual sample of the Cb component.
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公开(公告)号：US20240187581A1
公开(公告)日：2024-06-06
申请号：US18421082
申请日：2024-01-24
发明人： Minsoo PARK , Kyungah KIM , Quockhanh DINH , Minwoo PARK , Kwangpyo CHOI , Yinji PIAO
IPC分类号： H04N19/117 , H04N19/124 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/82
CPC分类号： H04N19/117 , H04N19/124 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/82
摘要： An image processing method for artificial intelligence (AI)-based filtering includes: obtaining motion information regarding inter prediction of a current block of a current reconstructed image, based on the motion information regarding the inter prediction, determining at least one reference reconstructed image regarding the current reconstructed image, based on the motion information and the at least one reference reconstructed image, determining at least one reference block, by inputting the current block and the at least one reference block to a neural network, obtaining an output block corresponding to the current block, and based on the output block, obtaining a modified current reconstructed image, wherein the neural network is trained using training data including the current block, the at least one reference block, and the output block, to reduce an error between the current block and an original block corresponding to the current block.
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公开(公告)号：US20240107060A1
公开(公告)日：2024-03-28
申请号：US18531345
申请日：2023-12-06
发明人： Seungsoo JEONG , Minwoo PARK , Minsoo PARK
IPC分类号： H04N19/53 , H04N19/139 , H04N19/176
CPC分类号： H04N19/53 , H04N19/139 , H04N19/176
摘要： In a video encoding and decoding process, a video decoding method and a video decoding apparatus are provided to for determining whether a motion vector of an adjacent block at a location corresponding to one motion vector resolution among a plurality of motion vector resolutions is available, when the motion vector of the adjacent block is available, obtaining the motion vector of the adjacent block as a motion vector predictor of a current block, when the motion vector of the adjacent block is unavailable, obtaining a default motion vector by using a motion vector of one of two other adjacent blocks of the current block as a motion vector predictor of the current block, and performing prediction on the current block based on the motion vector predictor of the current block.
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公开(公告)号：US20230370583A1
公开(公告)日：2023-11-16
申请号：US18354839
申请日：2023-07-19
发明人： Narae CHOI , Minsoo PARK , Minwoo PARK , Seungsoo JEONG , Kiho CHOI , Woongil CHOI , Anish TAMSE , Yinji PIAO
IPC分类号： H04N19/105 , H04N19/176 , H04N19/186 , H04N19/593
CPC分类号： H04N19/105 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/119
摘要： Provided are a video decoding method and apparatus which, during video encoding and decoding processes, determine whether a current block is in contact with an upper boundary of a largest coding unit including the current block, when it is determined that the current block is in contact with the upper boundary of the largest coding unit, determine an upper reference line of the current block as one reference line, when it is determined that the current block is not in contact with the upper boundary of the largest coding unit, determine the upper reference line of the current block based on N reference lines, and use the determined upper reference line.
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公开(公告)号：US20230362358A1
公开(公告)日：2023-11-09
申请号：US18354870
申请日：2023-07-19
发明人： Narae CHOI , Minsoo PARK , Minwoo PARK , Seungsoo JEONG , Kiho CHOI , Woongil CHOI , Anish TAMSE , Yinji PIAO
IPC分类号： H04N19/105 , H04N19/176 , H04N19/186 , H04N19/593
CPC分类号： H04N19/105 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/119
摘要： Provided are a video decoding method and apparatus which, during video encoding and decoding processes, determine whether a current block is in contact with an upper boundary of a largest coding unit including the current block, when it is determined that the current block is in contact with the upper boundary of the largest coding unit, determine an upper reference line of the current block as one reference line, when it is determined that the current block is not in contact with the upper boundary of the largest coding unit, determine the upper reference line of the current block based on N reference lines, and use the determined upper reference line.
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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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公开(公告)号：US20220132145A1
公开(公告)日：2022-04-28
申请号：US17573181
申请日：2022-01-11
发明人： Woongil CHOI , Minsoo PARK , Minwoo PARK , Seungsoo JEONG , Kiho CHOI , Narae CHOI , Anish TAMSE , Yinji PIAO
IPC分类号： H04N19/174 , H04N19/176 , H04N19/60 , H04N19/117 , H04N19/82
摘要： In a video encoding and decoding process, provided are a method and apparatus for determining whether a slice including an adjacent pixel located at the upper-left or lower-right side of a current pixel from among adjacent pixels used for an adaptive loop filter of the current pixel is different from a slice including the current pixel, when the slice including the adjacent pixel at the upper-left or lower-right location is different from the slice including the current pixel, determining a value of the adjacent pixel located at the upper-left or lower-right side as a value of a closest pixel in a horizontal direction of the adjacent pixel located at the upper-left or lower-right side from among pixels included in the slice including the current pixel, determining an adaptive loop filter including a filter coefficient for the current pixel and the adjacent pixels based on values of the current pixel and the adjacent pixels, correcting the value of the current pixel by using the values of the adjacent pixels, by applying the adaptive loop filter to the current pixel, and encoding/decoding a current block including the current pixel.
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公开(公告)号：US20220078451A1
公开(公告)日：2022-03-10
申请号：US17299193
申请日：2019-12-09
发明人： Woongil CHOI , Gahyun RYU , Minsoo PARK , Minwoo PARK , Seungsoo JEONG , Kwangpyo CHOI , Kiho CHOI , Narae CHOI , Anish TAMSE , Yinji PIAO
IPC分类号： H04N19/174 , H04N19/119 , H04N19/70 , H04N19/172 , H04N19/105
摘要： Provided is a video decoding method including obtaining identification information of a first tile and identification information of a last tile from a bitstream, wherein the first and last tiles are included in a first slice, determining an index difference between the first tile and the last tile, based on a result of comparing the identification information of the first tile with the identification information of the last tile, determining the number of tiles included in the first slice, by using the index difference between the first tile and the last tile, and decoding a plurality of tiles included in the first slice according to an encoding order by using the number of tiles included in the first slice, the identification information of the first tile, and the identification information of the last tile.
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公开(公告)号：US20220014748A1
公开(公告)日：2022-01-13
申请号：US17293351
申请日：2019-11-12
发明人： Yinji PIAO , Gahyun RYU , Minsoo PARK , Minwoo PARK , Seungsoo JEONG , Kiho CHOI , Narae CHOI , Woongil CHOI , Anish TAMSE
摘要： Provided is a method of decoding coefficients included in image data, the method including determining a Rice parameter for a current coefficient, based on a base level of the current coefficient; parsing coefficient level information indicating a size of the current coefficient from a bitstream by using the determined Rice parameter; and identifying the size of the current coefficient by de-binarizing the coefficient level information by using the determined Rice parameter.
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