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公开(公告)号：US11758136B2
公开(公告)日：2023-09-12
申请号：US16302210
申请日：2017-06-23
Applicant: Electronics and Telecommunications Research Institute , Industry Academy Cooperation Foundation of Sejong University
Inventor： Sung Chang Lim , Jung Won Kang , Hyun Suk Ko , Jin Ho Lee , Ha Hyun Lee , Dong San Jun , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi , Yung Lyul Lee , Nam Uk Kim , Jun Woo Choi
IPC: H04N19/122 , H04N19/176 , H04N19/70 , H04N19/61 , H04N19/90 , H04N19/107 , H04N19/186 , H04N19/103 , H04N19/132 , H04N19/625
CPC classification number: H04N19/122 , H04N19/103 , H04N19/107 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/90
Abstract: The present invention relates to a method and apparatus for encoding and decoding a video image based on transform. The method for decoding a video includes: determining a transform mode of a current block; inverse-transforming residual data of the current block according to the transform mode of the current block; and rearranging the inverse-transformed residual data of the current block according to the transform mode of the current block, wherein the transform mode includes at least one of SDST (Shuffling Discrete Sine Transform), SDCT (Shuffling Discrete cosine Transform), DST (Discrete Sine Transform) or DCT (Discrete Cosine Transform).
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公开(公告)号：US11516463B2
公开(公告)日：2022-11-29
申请号：US17160845
申请日：2021-01-28
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 , Dong San Jun , Hui Yong Kim , Gwang Hoon Park , Jin Soo Choi , Tae Hyun Kim , Dae Young Lee , Young Su Heo
IPC: H04N19/105 , H04N19/147 , H04N19/159 , H04N19/176
Abstract: A method and apparatus use a geometric modified image for video encoding/decoding. The encoding method may include: generating a geometric modified reference picture by geometrically modifying a reference picture; generating a prediction block of a current block within an encoding target picture by performing inter prediction by referencing the reference picture or the geometrically modified reference picture; and encoding inter-prediction information of the current block.
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53.发明授权公开(公告)号：US11509907B2
公开(公告)日：2022-11-22
申请号：US16650885
申请日：2018-09-28
Inventor： Dong San Jun , Jung Won Kang , Hyun Suk Ko , Sung Chang Lim , Jin Ho Lee , Ha Hyun Lee , Hui Yong Kim
IPC: H04N19/147 , H04N19/176
Abstract: An image encoding/decoding method is disclosed. An method of decoding an image of the present invention may comprise deriving at least one merge candidate of a current block, generating an initial merge candidate list of the current block by using the derived at least one merge candidate and generating a reconfigured merge candidate list by using the initial merge candidate list.
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54.发明授权公开(公告)号：US11128862B2
公开(公告)日：2021-09-21
申请号：US16325253
申请日：2017-09-11
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 , H04N19/96 , H04N19/105 , H04N19/176 , H04N19/119
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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55.发明授权公开(公告)号：US11039130B2
公开(公告)日：2021-06-15
申请号：US16342225
申请日：2017-10-24
Applicant: Electronics and Telecommunications Research Institute , Industry-University Cooperation Foundation Korea Aerospace University , Hanbat National University Industry-Academic Cooperation Foundation
Inventor： 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: H04N19/11 , G06F17/18 , H04N19/176 , H04N19/159 , H04N19/91 , H04N19/117 , H04N19/132 , H04N19/119 , H04N19/105 , H04N19/80 , H04N19/513 , H04N19/174 , H04N19/13
Abstract: 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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Patent Agency Ranking
公开(公告)号：US10834404B2
公开(公告)日：2020-11-10
申请号：US16099998
申请日：2017-05-23
Inventor： Sung Chang Lim , Jung Won Kang , Ha Hyun Lee , Dong San Jun , Hyun Suk Ko , Jin Ho Lee , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi
IPC: H04N19/139 , H04N19/117 , H04N19/51 , H04N19/52 , H04N19/124 , H04N19/91
Abstract: The present invention relates to a method of performing motion compensation by using motion vector prediction. To this end, a method of decoding an image may include: generating multiple motion vector candidate lists according to an inter-prediction direction of a current block; deriving multiple motion vectors for the current block by using the multiple motion vector candidate lists; determining multiple prediction blocks for the current block by using the multiple motion vectors; and obtaining a final prediction block for the current block based on the multiple prediction blocks.
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公开(公告)号：US12301859B2
公开(公告)日：2025-05-13
申请号：US18630834
申请日：2024-04-09
Inventor： Sung Chang Lim , Hui Yong Kim , Se Yoon Jeong , Suk Hee Cho , Dong San Jun , Jong Ho Kim , Ha Hyun Lee , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/513 , H04N19/426 , H04N19/44 , H04N19/61
Abstract: The present invention relates to image processing, and more particularly, to a video coding/decoding method using a clipped motion vector and an apparatus thereof. An embodiment of the present invention relates to a method of decoding an image. The method includes clipping a motion vector of a reference picture in a predetermined dynamic range to generate a clipped motion vector, storing the clipped motion vector in a buffer, deriving a motion vector of a coding treeblock using the motion vector stored in the buffer, and performing inter prediction decoding process using the motion vector of the coding treeblock. According to the exemplary embodiment of the present invention, a size of a memory required for storing motion vectors may be reduced.
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公开(公告)号：US12289449B2
公开(公告)日：2025-04-29
申请号：US18359384
申请日：2023-07-26
Applicant: Electronics and Telecommunications Research Institute , Industry Academy Cooperation Foundation of Sejong University
Inventor： Sung Chang Lim , Jung Won Kang , Hyun Suk Ko , Jin Ho Lee , Ha Hyun Lee , Dong San Jun , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi , Yung Lyul Lee , Nam Uk Kim , Jun Woo Choi
IPC: H04N19/122 , H04N19/103 , H04N19/107 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/90
Abstract: The present invention relates to a method and apparatus for encoding and decoding a video image based on transform. The method for decoding a video includes: determining a transform mode of a current block; inverse-transforming residual data of the current block according to the transform mode of the current block; and rearranging the inverse-transformed residual data of the current block according to the transform mode of the current block, wherein the transform mode includes at least one of SDST (Shuffling Discrete Sine Transform), SDCT (Shuffling Discrete cosine Transform), DST (Discrete Sine Transform) or DCT (Discrete Cosine Transform).
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公开(公告)号：US12225189B2
公开(公告)日：2025-02-11
申请号：US18411515
申请日：2024-01-12
Inventor： Jung Won Kang , Sung Chang Lim , Hyun Suk Ko , Ha Hyun Lee , Jin Ho Lee , Dong San Jun , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi
IPC: H04N19/105 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/96
Abstract: The present invention relates to an image encoding method and an image decoding method. The image decoding method includes partitioning a picture into a plurality of coding units, constructing a coding unit group including at least one coding unit of the plurality of coding units, obtaining coding information in units of one coding unit group, and decoding at least one coding unit of the plurality of coding units included in the coding unit group by using the obtained coding information.
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公开(公告)号：US12192483B2
公开(公告)日：2025-01-07
申请号：US18463848
申请日：2023-09-08
Inventor： Dong San Jun , Jin Ho Lee , Jung Won Kang , Hyun Suk Ko , Sung Chang Lim , Ha Hyun Lee , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi
IPC: H04N19/159 , H04N19/105 , H04N19/126 , H04N19/13 , H04N19/176 , H04N19/50 , H04N19/593
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, selecting at least one reconstructed sample line neighboring to the current block, constructing a reference sample using at least one reconstructed sample included in the at least one reconstructed sample line, and performing intra prediction for the current block based on the intra prediction mode and the reference sample.
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