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公开(公告)号：US11463690B2
公开(公告)日：2022-10-04
申请号：US17314192
申请日：2021-05-07
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , CHIPS & MEDIA, INC , INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
发明人： Jin Ho Lee , Jung Won Kang , Ha Hyun Lee , Sung Chang Lim , Hui Yong Kim , Dae Yeon Kim , Yung Lyul Lee
IPC分类号： H04N19/11 , H04N19/176 , H04N19/18 , H04N19/46 , H04N19/593
摘要： The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise acquiring transform coefficients distribution information of a neighboring block from a bitstream; direction-adaptively determining an intra prediction mode of a current block to be decoded, according to the transform coefficients distribution information of the neighboring block; and reconstructing the current block, based on the determined intra prediction mode, wherein the direction-adaptively determining includes determining similarity flag information corresponding to the neighboring block, based on the transform coefficients distribution information of the neighboring block.
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公开(公告)号：US11109032B2
公开(公告)日：2021-08-31
申请号：US16494027
申请日：2018-02-27
发明人： Dae Yeon Kim , Sung Chang Lim , Jung Won Kang , Ha Hyun Lee , Jin Ho Lee , Hui Yong Kim
IPC分类号： H04N19/13 , H04N19/103 , H04N19/124 , H04N19/176 , H04N19/70
摘要： According to an embodiment of the present invention, there is provided an image decoding method including: obtaining an arithmetic-coded symbol stream from an image stream; identifying a symbol segment from the symbol stream according to symbol segment information signaled from an encoding apparatus; selecting an arithmetic decoding process corresponding to the symbol segment; and collectively processing one or more symbols among multiple symbols included in the symbol segment, in association with the selected arithmetic decoding process.
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公开(公告)号：US11856221B2
公开(公告)日：2023-12-26
申请号：US17878630
申请日：2022-08-01
发明人： Ha Hyun Lee , Jung Won Kang , Sung Chang Lim , Jin Ho Lee , Hui Yong Kim , Dae Yeon Kim , Dong Jin Park
IPC分类号： H04N19/55 , H04N19/182 , H04N19/563
CPC分类号： H04N19/55 , H04N19/182 , H04N19/563
摘要： Disclosed is a method of decoding an image and a method of encoding an image. The method of decoding an image includes: obtaining motion-constrained tile set information; determining, on the basis of the motion-constrained tile set information, a first boundary region of a collocated tile set within a reference picture, which corresponds to a motion-constrained tile set; padding a second boundary region corresponding to the first boundary region; and performing inter prediction on the motion-constrained tile set by using a collocated tile set that includes the padded second boundary region.
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公开(公告)号：US11838502B2
公开(公告)日：2023-12-05
申请号：US17885349
申请日：2022-08-10
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , CHIPS & MEDIA, INC , INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
发明人： Jin Ho Lee , Jung Won Kang , Ha Hyun Lee , Sung Chang Lim , Hui Yong Kim , Dae Yeon Kim , Yung Lyul Lee
IPC分类号： H04N19/11 , H04N19/176 , H04N19/18 , H04N19/46 , H04N19/593
CPC分类号： H04N19/11 , H04N19/176 , H04N19/18 , H04N19/46 , H04N19/593
摘要： The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise acquiring transform coefficients distribution information of a neighboring block from a bitstream; direction-adaptively determining an intra prediction mode of a current block to be decoded, according to the transform coefficients distribution information of the neighboring block; and reconstructing the current block, based on the determined intra prediction mode, wherein the direction-adaptively determining includes determining similarity flag information corresponding to the neighboring block, based on the transform coefficients distribution information of the neighboring block.
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5.发明授权公开(公告)号：US12069300B2
公开(公告)日：2024-08-20
申请号：US18468512
申请日：2023-09-15
申请人： Electronics and Telecommunications Research Institute , INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY , CHIPS&MEDIA, INC , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
发明人： Sung Chang Lim , Jung Won Kang , Ha Hyun Lee , Jin Ho Lee , Hui Yong Kim , Yung Lyul Lee , Ji Yeon Jung , Nam Uk Kim , Myung Jun Kim , Yang Woo Kim , Dae Yeon Kim , Jae Gon Kim
IPC分类号： H04N7/12 , G06T9/00 , H04N19/107 , H04N19/127 , H04N19/159 , H04N19/176 , H04N19/189 , H04N19/196 , H04N19/503 , H04N19/593 , H04N19/132
CPC分类号： H04N19/593 , G06T9/004 , H04N19/107 , H04N19/127 , H04N19/159 , H04N19/176 , H04N19/189 , H04N19/196 , H04N19/503 , H04N19/132
摘要： Disclosed herein is a method of decoding an image. The method includes generating an inter prediction block by performing inter prediction with respect to a current block, generating an intra prediction block by performing intra prediction with respect to the current block, determining a first weight and a second weight, and generating a final prediction block by respectively applying the first weight and the second weight to the inter prediction block and the intra prediction block. The generating of the intra prediction block includes generating the intra prediction block using a predefined intra prediction mode.
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公开(公告)号：US12034929B2
公开(公告)日：2024-07-09
申请号：US17418690
申请日：2019-12-24
发明人： Sung Chang Lim , Jung Won Kang , Ha Hyun Lee , Jin Ho Lee , Hui Yong Kim , Dae Yeon Kim
IPC分类号： H04N19/124 , H04N19/159 , H04N19/176 , H04N19/186
CPC分类号： H04N19/124 , H04N19/159 , H04N19/176 , H04N19/186
摘要： Disclosed herein is a method of encoding/decoding an image. The image decoding method includes decoding information on a quantization matrix from a bitstream, acquiring a quantization matrix of a current block based on the information on the quantization matrix, and dequantizing the current block using the quantization matrix of the current block. The acquiring of the quantization matrix of the current block includes deriving a single identifier using at least one of a size of the current block, a prediction mode or a color component, and acquiring the quantization matrix of the current block based on the single identifier.
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公开(公告)号：US11706418B2
公开(公告)日：2023-07-18
申请号：US17224623
申请日：2021-04-07
发明人： Dae Yeon Kim , Sung Chang Lim , Jung Won Kang , Ha Hyun Lee , Jin Ho Lee , Hui Yong Kim
IPC分类号： H04N19/13 , H04N19/103 , H04N19/124 , H04N19/176 , H04N19/70
CPC分类号： H04N19/13 , H04N19/103 , H04N19/124 , H04N19/176 , H04N19/70
摘要： According to an embodiment of the present invention, there is provided an image decoding method including: obtaining an arithmetic-coded symbol stream from an image stream; identifying a symbol segment from the symbol stream according to symbol segment information signaled from an encoding apparatus; selecting an arithmetic decoding process corresponding to the symbol segment; and collectively processing one or more symbols among multiple symbols included in the symbol segment, in association with the selected arithmetic decoding process.
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8.发明授权公开(公告)号：US11930179B2
公开(公告)日：2024-03-12
申请号：US17419142
申请日：2019-12-27
申请人： Electronics and Telecommunications Research Institute , INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY , CHIPS & MEDIA, INC , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
发明人： Sung Chang Lim , Jung Won Kang , Ha Hyun Lee , Jin Ho Lee , Hui Yong Kim , Yung Lyul Lee , Ji Yeon Jung , Nam Uk Kim , Myung Jun Kim , Yang Woo Kim , Dae Yeon Kim , Jae Gon Kim , Do Hyeon Park
IPC分类号： H04N19/132 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/186
CPC分类号： H04N19/132 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/186
摘要： An image encoding/decoding method is provided. An image decoding method of the present invention may comprise deriving an intra-prediction mode of a current luma block, deriving an intra-prediction mode of a current chroma block based on the intra-prediction mode of the current luma block, generating a prediction block of the current chroma block based on the intra-prediction mode of the current chroma block, and the deriving of an intra-prediction mode of a current chroma block may comprise determining whether or not CCLM (Cross-Component Linear Mode) can be performed for the current chroma block.
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公开(公告)号：US11570440B2
公开(公告)日：2023-01-31
申请号：US17295834
申请日：2019-11-21
发明人： Sung Chang Lim , Jung Won Kang , Ha Hyun Lee , Jin Ho Lee , Hui Yong Kim , Dae Yeon Kim , Wook Je Jeong , Hyun Gyu Kim
IPC分类号： H04N19/70 , H04N19/176 , H04N19/13
摘要： An image decoding method is disclosed in the present specification. A method of decoding an image, the method may comprises determining whether to perform a context update for a first syntax element of a current block, updating, on the basis of the determination, a context for entropy decoding of the first syntax element and generating, on the basis of the updated context, a bin for the first syntax element, and wherein whether to perform the context update is determined on the basis of the number of pre-decoded predetermined syntax elements for the current block.
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10.发明授权公开(公告)号：US11445215B2
公开(公告)日：2022-09-13
申请号：US16958612
申请日：2018-12-28
发明人： Ha Hyun Lee , Jung Won Kang , Sung Chang Lim , Jin Ho Lee , Hui Yong Kim , Dae Yeon Kim , Dong Jin Park
IPC分类号： H04N19/55 , H04N19/182 , H04N19/563
摘要： Disclosed is a method of decoding an image and a method of encoding an image. The method of decoding an image includes: obtaining motion-constrained tile set information; determining, on the basis of the motion-constrained tile set information, a first boundary region of a collocated tile set within a reference picture, which corresponds to a motion-constrained tile set; padding a second boundary region corresponding to the first boundary region; and performing inter prediction on the motion-constrained tile set by using a collocated tile set that includes the padded second boundary region.
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