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公开(公告)号:US20220408091A1
公开(公告)日:2022-12-22
申请号:US17894843
申请日:2022-08-24
申请人: Electronics and Telecommunications Research Institute , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY , 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 , Jae Gon KIM , Do Hyeon PARK , Yong Uk YOON , Yung Lyul LEE
IPC分类号: H04N19/13 , H04N19/172 , H04N19/184
摘要: There is provided an video encoding/decoding method and apparatus. The video decoding method comprises acquiring a bitstream including a predetermined context element, performing at least one of a context model determination, a probability update, and a probability interval determination on the predetermined syntax element, and arithmetically decoding the predetermined syntax element on the basis of a result of the performance.
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2.
公开(公告)号:US20220109846A1
公开(公告)日:2022-04-07
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 , H04N19/186 , H04N19/176 , H04N19/159 , H04N19/105
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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3.
公开(公告)号:US20210274197A1
公开(公告)日:2021-09-02
申请号:US17259842
申请日:2019-07-05
申请人: Electronics and Telecommunications Research Institute , CHIPS&MEDIA, INC , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY , 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 , Do Hyeon PARK , Jae Gon KIM , Yong Uk YOON , Yung Lyul LEE
IPC分类号: H04N19/18 , H04N19/119 , H04N19/129 , H04N19/176 , H04N19/60
摘要: Disclosed in a method of decoding an image. The method includes determining a zero out region within a current block; partitioning a region except for the zero out region within the current block, on a per transform coefficient group basis; and decoding a transform coefficient on the per transform coefficient group basis.
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公开(公告)号:US20210227222A1
公开(公告)日:2021-07-22
申请号:US17251423
申请日:2019-06-12
申请人: Electronics and Telecommunications Research Institute , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY , 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 , Jae Gon KIM , Do Hyeon PARK , Yong Uk YOON , Yung Lyul LEE
IPC分类号: H04N19/13 , H04N19/184 , H04N19/172
摘要: There is provided an video encoding/decoding method and apparatus. The video decoding method comprises acquiring a bitstream including a predetermined context element, performing at least one of a context model determination, a probability update, and a probability interval determination on the predetermined syntax element, and arithmetically decoding the predetermined syntax element on the basis of a result of the performance.
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5.
公开(公告)号:US20220070463A1
公开(公告)日:2022-03-03
申请号:US17419204
申请日:2019-12-27
申请人: Electronics and Telecommunications Research Institute , lNDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY , 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 , Jae Gon KIM , Do Hyeon PARK , Yung Lyul LEE
IPC分类号: H04N19/13 , H04N19/176 , H04N19/159 , H04N19/105 , H04N19/119
摘要: Disclosed herein is an image decoding method. The method of decoding an image comprises obtaining prediction information and residual signal information for a current block from a bitstream and reconstructing, based on the obtained prediction information and the residual signal information, the current block, wherein the prediction information is obtained through entropy decoding, and wherein a context model used for the entropy decoding of the prediction information is determined based on a prediction mode of a neighboring block of the current block.
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6.
公开(公告)号:US20210281838A1
公开(公告)日:2021-09-09
申请号:US17258124
申请日:2019-07-05
申请人: Electronics and Telecommunications Research Institute , lNDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY , 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 , Jae Gon KIM , Ji Hoon DO , Yong Uk YOON , Do Hyeon PARK , Yung Lyul LEE
IPC分类号: H04N19/11 , H04N19/105 , H04N19/176 , H04N19/593 , H04N19/184 , H04N19/186
摘要: There is provided an image encoding/decoding method and apparatus. An image decoding method according to the present invention may comprise reconstructing a most frequent mode (MFM) indicator indicating whether or not an intra prediction mode of a current block is a predetermined intra prediction mode, deriving, on the basis of the MFM indicator, the intra prediction mode of the current block, and generating a prediction block of the current block by performing intra prediction on the current block on the basis of the intra prediction mode.
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7.
公开(公告)号:US20220232230A1
公开(公告)日:2022-07-21
申请号:US17614935
申请日:2020-05-29
申请人: Electronics and Telecommunications Research Institute , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
发明人: Jin Ho LEE , Jung Won KANG , Ha Hyun LEE , Sung Chang LIM , Hui Yong KIM , Jae Gon KIM , Do Hyeon PARK , Ji Hoon DO , Yong Uk YOON
IPC分类号: H04N19/176 , H04N19/18 , H04N19/50 , H04N19/119
摘要: Disclosed herein is a video decoding method including determining a zero-out width threshold and a zero-out height threshold for distinguishing between a transform coefficient coding region and a zero-out region of a current block according to a size of the current block, determining the transform coefficient coding region and the zero-out region of the current block according to the zero-out width threshold and the zero-out height threshold, acquiring transform coefficient information of the transform coefficient coding region from a bitstream and determining a level of a transform coefficient of the transform coefficient coding region according to the transform coefficient information, determining a level of a transform coefficient of the zero-out region as 0 without acquiring transform coefficient information, and reconstructing the current block by inversely transforming the transform coefficient of the current block.
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8.
公开(公告)号:US20230088384A1
公开(公告)日:2023-03-23
申请号:US17988972
申请日:2022-11-17
申请人: Electronics and Telecommunications Research Institute , Industry-University Cooperation Foundation Korea Aerospace University , Hanbat National University Industry-Academic Cooperation Foundation
发明人: Jin Ho LEE , Sung Chang LIM , Jung Won KANG , Hyun Suk KO , Ha Hyun LEE , Dong San JUN , Seung Hyun CHO , Hui Yong KIM , Jae Gon KIM , Do Hyeon PARK , Jin Soo CHOI , Hae Chul CHOI
IPC分类号: H04N19/11 , H04N19/176 , H04N19/159 , G06F17/18 , H04N19/91 , H04N19/117 , H04N19/132 , H04N19/119 , H04N19/105 , H04N19/80 , H04N19/513 , H04N19/174 , H04N19/13
摘要: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus according to the present invention may comprise deriving an intra-prediction mode of a current block, and performing intra-prediction for the current block based on the intra-prediction mode. The deriving of the intra-prediction mode may comprise decoding a predetermined mode sameness indicator.
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公开(公告)号:US20220312003A1
公开(公告)日:2022-09-29
申请号:US17620582
申请日:2020-06-19
申请人: Electronics and Telecommunications Research Institute , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
发明人: Jin Ho LEE , Jung Won KANG , Ha Hyun LEE , Sung Chang LIM , Hui Yong KIM , Jae Gon KIM , Yong Uk YOON , Do Hyeon PARK
IPC分类号: H04N19/11 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/463 , H04N19/593 , H04N19/117 , H04N19/182 , H04N19/105
摘要: Disclosed herein are image encoding/decoding method and apparatus. The image decoding method according to the present invention includes: obtaining prediction mode information of a neighboring block for a current block from a bitstream; by using the obtained information, deriving a prediction mode of the neighboring block; and, based on the prediction mode of the neighboring block, reconstructing the current block.
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公开(公告)号:US20220385888A1
公开(公告)日:2022-12-01
申请号:US17761908
申请日:2020-09-21
申请人: Electronics and Telecommunications Research Institute , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
发明人: Jin Ho LEE , Jung Won KANG , Ha Hyun LEE , Sung Chang LIM , Jae Gon KIM , Ji Hoon DO , Do Hyeon PARK , Yong Uk YOON
IPC分类号: H04N19/105 , H04N19/132 , H04N19/186 , H04N19/176
摘要: An image encoding/decoding method and apparatus are disclosed. The method of decoding an image according to the present invention, comprises, generating a first prediction block of a current block, generating a second prediction block of the current block and generating a final prediction sample of the current block using a sample unit weighted sum of the first prediction block and the second prediction block, wherein a weight used for the sample unit weighted sum is determined based on a location of a current luma sample and a geometric prediction mode (GPM) boundary line for partitioning the current block.
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