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公开(公告)号：US11706434B2
公开(公告)日：2023-07-18
申请号：US17712175
申请日：2022-04-03
发明人： Heechul Yang , Minsoo Park
IPC分类号： H04N19/44 , H04N19/124 , H04N19/176 , H04N19/46 , H04N19/96
CPC分类号： H04N19/44 , H04N19/124 , H04N19/176 , H04N19/46 , H04N19/96
摘要： Provided is an image decoding method including determining a predicted quantization parameter of a current quantization group determined according to at least one of block split information and block size information, determining a difference quantization parameter of the current quantization group, determining a quantization parameter of the current quantization group, based on the predicted quantization parameter and the difference quantization parameter of the current quantization group, and inverse quantizing a current block included in the current quantization group, according to the quantization parameter of the current quantization group.
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公开(公告)号：US11700370B2
公开(公告)日：2023-07-11
申请号：US17272110
申请日：2019-08-28
发明人： Minwoo Park , Minsoo Park , Anish Tamse
IPC分类号： H04N19/119 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/60 , H04N19/42
CPC分类号： H04N19/119 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/60 , H04N19/42
摘要： Provided is a video decoding method including: generating coding units by splitting at least one of a height and a width of a largest coding unit having a first size; based on whether a height or a width of a non-square first coding unit including an outer boundary of an image, among the coding units, is greater than a maximum transform size, determining whether it is allowed to generate two second coding units by splitting at least one of the height and the width of the first coding unit; and decoding the second coding units generated from the first coding unit.
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公开(公告)号：US20230171422A1
公开(公告)日：2023-06-01
申请号：US17981567
申请日：2022-11-07
发明人： Anish TAMSE , Minwoo Park , Minsoo Park
IPC分类号： H04N19/513 , H04N19/176
CPC分类号： H04N19/513 , H04N19/176
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：US11451814B2
公开(公告)日：2022-09-20
申请号：US17475832
申请日：2021-09-15
发明人： Minsoo Park , Minwoo Park
IPC分类号： H04N19/46 , H04N19/117 , H04N19/159 , H04N19/82 , H04N19/176 , H04N19/186 , H04N19/61
摘要： An image decoding method may include determining whether at least one of a height and a width of a current coding unit is greater than a predetermined size, obtaining, based on whether the current coding unit is to be split into transform units, a second coded block flag from the bitstream, the second coded block flag indicating whether a block of a luma component included in the at least one transform unit includes at least one transform coefficient in the bitstream, obtaining a residual signal of the block of the luma component included in the at least one transform unit, based on the second coded block flag, reconstructing the current coding unit based on the residual signal, and reconstructing the current image including the current coding unit, based on the reconstructed current coding unit. The split shape mode may indicate at least one of whether to perform splitting, a split direction, and a split type, and the split type may correspond to binary splitting, tri splitting, and quad splitting.
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公开(公告)号：US11425416B2
公开(公告)日：2022-08-23
申请号：US17311209
申请日：2019-12-06
发明人： Anish Tamse , Minwoo Park , Gahyun Ryu , Minsoo Park , Seungsoo Jeong , Kiho Choi , Narae Choi , Woongil Choi , Yinji Piao
IPC分类号： H04N19/52 , H04N19/186 , H04N19/119 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/527
摘要： A video decoding method and device for determining whether a prediction mode of a current block is an affine mode; splitting, when the prediction mode of the current block is the affine mode, a luma block of the current block into a plurality of sub luma blocks having a square shape based on a predefined sub block size; determining a mean luma motion vector for four neighboring sub luma blocks among the plurality of sub luma blocks, by using a motion vector of an upper-left sub luma block of the four sub luma blocks and a motion vector of a lower-right sub luma block of the four sub luma blocks; determining the mean luma motion vector to be a motion vector of a current sub chroma block corresponding to the four sub luma blocks; and performing prediction on the current sub chroma block by using the determined motion vector, in a video encoding and decoding process are suggested.
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公开(公告)号：US20220224930A1
公开(公告)日：2022-07-14
申请号：US17712175
申请日：2022-04-03
发明人： Heechul YANG , Minsoo Park
IPC分类号： H04N19/44 , H04N19/124 , H04N19/176 , H04N19/46 , H04N19/96
摘要： Provided is an image decoding method including determining a predicted quantization parameter of a current quantization group determined according to at least one of block split information and block size information, determining a difference quantization parameter of the current quantization group, determining a quantization parameter of the current quantization group, based on the predicted quantization parameter and the difference quantization parameter of the current quantization group, and inverse quantizing a current block included in the current quantization group, according to the quantization parameter of the current quantization group.
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公开(公告)号：US11297315B2
公开(公告)日：2022-04-05
申请号：US17042461
申请日：2019-04-24
发明人： Narae Choi , Minsoo Park , Minwoo Park , Seungsoo Jeong , Kiho Choi , Woongil Choi , Anish Tamse , Yinji Piao
IPC分类号： H04N19/11 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176
摘要： Provided are video encoding/decoding methods and apparatuses for determining an intra prediction mode of a current block, based on a width and height of the current block. When the current block has a square shape in which the width and height are equal, the intra prediction mode of the current block is determined from among first intra prediction mode candidates including a plurality of predetermined intra prediction directions, and when the current block has a non-square shape in which the width and height are not equal, the intra prediction mode of the current block is determined from among second intra prediction mode candidates configured based on the non-square shape.
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78.发明授权公开(公告)号：US12113965B2
公开(公告)日：2024-10-08
申请号：US18346704
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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79.发明授权公开(公告)号：US12108034B2
公开(公告)日：2024-10-01
申请号：US18346610
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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80.发明授权公开(公告)号：US12095986B2
公开(公告)日：2024-09-17
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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