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21.发明授权公开(公告)号：US11882272B2
公开(公告)日：2024-01-23
申请号：US17744845
申请日：2022-05-16
Inventor： Jin Ho Lee , Sung Chang Lim , Jung Won Kang , Hyun Suk Ko , Dong San Jun , Ha Hyun Lee , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi
IPC: H04N19/107 , H04N19/176 , H04N19/117 , H04N19/147 , H04N19/119 , H04N19/11 , H04N19/105 , H04N19/30 , H04N19/91 , H04N19/146 , H04N19/44 , H04N19/126 , H04N19/52
CPC classification number: H04N19/107 , H04N19/105 , H04N19/11 , H04N19/117 , H04N19/119 , H04N19/126 , H04N19/146 , H04N19/147 , H04N19/176 , H04N19/30 , H04N19/44 , H04N19/52 , H04N19/91
Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image decoding method performing intra prediction according to the present invention may comprise dividing a current block into at least one sub-block; deriving an intra prediction mode for the at least one sub-block; constructing a reference sample for the intra prediction; and performing intra prediction for the at least one sub-block based on the derived intra prediction mode.
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公开(公告)号：US11871001B2
公开(公告)日：2024-01-09
申请号：US17994261
申请日：2022-11-25
Inventor： Ha Hyun Lee , Jung Won Kang , Sung Chang Lim , Jin Ho Lee , Hui Yong Kim
IPC: H04N19/139 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/593
CPC classification number: H04N19/139 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/593
Abstract: An image decoding method is disclosed in the present specification. An image decoding method according to the present invention may include: determining a position of a co-located block of a current block within a co-located picture (co-located picture); determining a representative motion vector of the current block by using motion information at the position of the co-located block; and deriving motion information on a sub-block included in the current block by using the representative motion vector.
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23.发明授权公开(公告)号：US11838540B2
公开(公告)日：2023-12-05
申请号：US17415568
申请日：2019-12-20
Inventor： Ha Hyun Lee , Jung Won Kang , Sung Chang Lim , Jin Ho Lee , Hui Yong Kim
IPC: H04N19/577 , H04N19/105 , H04N19/159 , H04N19/176
CPC classification number: H04N19/577 , H04N19/105 , H04N19/159 , H04N19/176
Abstract: Disclosed herein is a method of decoding an image including determining whether a current block is in a bi-directional optical flow (BIO) mode, calculating gradient information of prediction samples of the current block when the current block is in the BIO mode, and generating a prediction block of the current block using the calculated gradient information, wherein the calculating of the gradient information of the prediction samples of the current block includes calculating the gradient information using at least one neighbor sample adjacent to the prediction samples.
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24.发明授权公开(公告)号：US11825077B2
公开(公告)日：2023-11-21
申请号：US17724818
申请日：2022-04-20
Applicant: Electronics and Telecommunications Research Institute , University-Industry Cooperation Group of Kyung Hee University
Inventor： Jung Won Kang , Hyun Suk Ko , Sung Chang Lim , Jin Ho Lee , Ha Hyun Lee , Dong San Jun , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi , Gwang Hoon Park , Tae Hyun Kim , Dae Young Lee
IPC: H04N19/70 , H04N19/105 , H04N19/117 , H04N19/132 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/46 , H04N19/52
CPC classification number: H04N19/105 , H04N19/117 , H04N19/132 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/46 , H04N19/52
Abstract: An image encoding/decoding method and apparatus are provided. An image encoding method performed by an image encoding apparatus may comprise determining an intra-prediction mode of a current block, configuring a reference sample of intra prediction by using at least one of a neighbor pixel of the current block in a current picture and a pixel of a reference picture, and performing intra prediction for the current block based on the intra-prediction mode and the reference sample.
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25.发明授权公开(公告)号：US11818340B2
公开(公告)日：2023-11-14
申请号：US17258124
申请日：2019-07-05
Applicant: Electronics and Telecommunications Research Institute , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY , INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
Inventor： 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: H04N19/105 , H04N19/11 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/593 , H04N19/119 , H04N19/70 , H04N19/96
CPC classification number: H04N19/11 , H04N19/105 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/593 , H04N19/119 , H04N19/70 , H04N19/96
Abstract: 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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Patent Agency Ranking
26.发明授权公开(公告)号：US11805247B2
公开(公告)日：2023-10-31
申请号：US17401424
申请日：2021-08-13
Inventor： Seung Hyun Cho , Jung Won Kang , Sung Chang Lim , Hyun Suk Ko , Dong San Jun , Jin Ho Lee , Ha Hyun Lee , Hui Yong Kim , Jin Soo Choi
IPC: H04N19/11 , H04N19/105 , H04N19/176 , H04N19/96 , H04N19/119
CPC classification number: H04N19/11 , H04N19/105 , H04N19/119 , H04N19/176 , H04N19/96
Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra-prediction mode for a current block, determining whether or not a left boundary or an upper boundary of the current block is a boundary of a predetermined image region, configuring a reference sample by using at least one reconstructed sample included in at least one reconstructed sample line adjacent to the current block based on the determination result, and performing intra-prediction for the current block based on the intra-prediction mode and the reference sample.
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27.发明授权公开(公告)号：US11765386B2
公开(公告)日：2023-09-19
申请号：US17890972
申请日：2022-08-18
Applicant: Electronics and Telecommunications Research Institute , INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY , CHIPS&MEDIA, INC , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
Inventor： 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: H04N7/12 , H04N19/593 , H04N19/107 , H04N19/127 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/503 , G06T9/00 , H04N19/189 , H04N19/132
CPC classification number: H04N19/593 , G06T9/004 , H04N19/107 , H04N19/127 , H04N19/159 , H04N19/176 , H04N19/189 , H04N19/196 , H04N19/503 , H04N19/132
Abstract: 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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28.发明授权公开(公告)号：US11743486B2
公开(公告)日：2023-08-29
申请号：US17525053
申请日：2021-11-12
Inventor： Sung Chang Lim , Hui Yong Kim , Se Yoon Jeong , Suk Hee Cho , Jong Ho Kim , Ha Hyun Lee , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn
IPC: H04N19/52
CPC classification number: H04N19/52
Abstract: An inter prediction method according to the present invention comprises: a step for deriving reference motion information related to a unit to be decoded in a current picture; and a step for performing motion compensation for the unit to be decoded, using the reference motion information that has been derived. According to the present invention, image encoding/decoding efficiency can be enhanced.
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公开(公告)号：US11689720B2
公开(公告)日：2023-06-27
申请号：US17277512
申请日：2019-09-19
Inventor： Sung Chang Lim , Jung Won Kang , Ha Hyun Lee , Jin Ho Lee , Hui Yong Kim
IPC: H04N19/119 , H04N19/176 , H04N19/96
CPC classification number: H04N19/119 , H04N19/176 , H04N19/96
Abstract: There is provided a method and apparatus of encoding/decoding an image. The method comprises decoding information on block partitioning of a current block included in a current picture from a bitstream; determining a partitioning method of the current block on the basis of the information; and partitioning the current block by using the determined partitioning method, wherein the partitioning method is determined on the basis of whether or not the current block includes a predetermined boundary.
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30.发明授权公开(公告)号：US11677940B2
公开(公告)日：2023-06-13
申请号：US16648470
申请日：2018-09-20
Inventor： Sung Chang Lim , Jung Won Kang , Hyun Suk Ko , Jin Ho Lee , Ha Hyun Lee , Dong San Jun , Hui Yong Kim
IPC: H04N19/119 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/169 , H04N19/46 , H04N19/96
CPC classification number: H04N19/119 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/1883 , H04N19/46 , H04N19/96
Abstract: The present invention relates to an image encoding/decoding method. The image decoding method includes splitting a coding tree unit (CTU) into at least one coding unit (CU) according to a block splitting structure and performing CU-based decoding, in which the block partition structure is configured such that at least one of binary tree splitting and ternary tree splitting is performed after quadtree splitting is performed.
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