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公开(公告)号：US20190306536A1
公开(公告)日：2019-10-03
申请号：US16308208
申请日：2017-07-10
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 , Dong San JUN , Ha Hyun LEE , Seung Hyun CHO , Hui Yong KIM , Jin Soo CHOI , Yung Lyul LEE , Jun Woo CHOI
IPC: H04N19/91 , H04N19/44 , H04N19/176 , H04N19/159 , H04N19/149
Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image encoding method according to the present invention may comprise generating a transform block by performing at least one of transform and quantization; grouping at least one coefficient included in the transform block into at least one coefficient group (CG); scanning at least one coefficient included in the coefficient group; and encoding the at least one coefficient.
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公开(公告)号：US20190215516A1
公开(公告)日：2019-07-11
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 , H04N19/61 , H04N19/70
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：US20180376137A1
公开(公告)日：2018-12-27
申请号：US15775420
申请日：2016-11-18
Inventor： Dong San JUN , Jung Won KANG , Sung Chang LIM , Hyun Suk KO , Jin Ho LEE , Hui Yong KIM , Jin Soo CHOI
IPC: H04N19/105 , H04N19/176 , H04N19/119
CPC classification number: H04N19/105 , H04N19/119 , H04N19/147 , H04N19/176 , H04N19/573
Abstract: The present invention provides a method and apparatus for encoding/decoding an image to enhance inter prediction. According to the present invention, the method includes: determining a first reference picture and a second reference picture of a current block; determining both a first reference block in the first reference picture and a second reference block in the second reference picture; partitioning the current block into a plurality of sub blocks; and obtaining a prediction block of each of the sub blocks on the basis of reference candidate block index information of each of the sub blocks.
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64.发明申请公开(公告)号：US20250133211A1
公开(公告)日：2025-04-24
申请号：US19002909
申请日：2024-12-27
Inventor： Seung Hyun CHO , Sung Chang LIM , Jung Won KANG , Hyun Suk KO , Jin Ho LEE , Ha Hyun LEE , Dong San JUN , Hui Yong KIM , Jin Soo CHOI
IPC: H04N19/129 , H04N19/105 , H04N19/11 , H04N19/119 , H04N19/13 , H04N19/132 , H04N19/159 , H04N19/18 , H04N19/513 , H04N19/91 , H04N19/96
Abstract: The present invention relates to a method for encoding and decoding an image. For this, a method for decoding an image may include: entropy-decoding a bitstream; determining a scanning unit and a scanning order of the transform coefficients of the current block; scanning and aligning the transform coefficients of the current block based on the determined scanning unit and scanning order; and performing inverse-transform for the aligned transform coefficients.
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公开(公告)号：US20240430405A1
公开(公告)日：2024-12-26
申请号：US18824773
申请日：2024-09-04
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 , G06T3/02 , G06T5/50 , G06T5/80 , G06T7/246 , H04N19/137 , H04N19/139 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/51 , H04N19/513
Abstract: The present invention relates to a method and apparatus for video encoding/decoding by using a geometric modified picture. The encoding method according to the present invention includes: generating a geometric modified picture by geometrically modifying a reference picture; and generating a first prediction block of a current block by performing inter prediction referencing the geometric modified picture.
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Patent Agency Ranking
公开(公告)号：US20230379466A1
公开(公告)日：2023-11-23
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 , H04N19/90 , H04N19/132 , H04N19/70 , H04N19/625 , H04N19/103 , H04N19/107 , H04N19/186 , H04N19/176 , H04N19/61
CPC classification number: H04N19/122 , H04N19/90 , H04N19/132 , H04N19/70 , H04N19/625 , H04N19/103 , H04N19/107 , H04N19/186 , H04N19/176 , H04N19/61
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：US20230353751A1
公开(公告)日：2023-11-02
申请号：US18346488
申请日：2023-07-03
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 , H04N19/52 , H04N19/51 , H04N19/117 , H04N19/124 , H04N19/91
CPC classification number: H04N19/139 , H04N19/52 , H04N19/51 , H04N19/117 , 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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68.发明公开公开(公告)号：US20230269372A1
公开(公告)日：2023-08-24
申请号：US18309934
申请日：2023-05-01
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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69.发明申请公开(公告)号：US20230071970A1
公开(公告)日：2023-03-09
申请号：US17941182
申请日：2022-09-09
Inventor： Dong San JUN , Ha Hyun LEE , Jung Won KANG , Hyun Suk KO , Sung Chang LIM , Jin Ho LEE , Seung Hyun CHO , Hui Yong KIM , Jin Soo CHOI
IPC: H04N19/109 , H04N19/176 , H04N19/91 , H04N19/513 , H04N19/182 , H04N19/132 , H04N19/172 , H04N19/117 , H04N19/174 , H04N19/86 , H04N19/119
Abstract: An image encoding method and an image decoding method are provided. The image decoding method includes deriving a temporal merge candidate from a co-located block of a current block, generating a merge candidate list of the current block based on the derived temporal merge candidate, and generating a prediction block of the current block based on the generated merge candidate list. The deriving a temporal merge candidate includes scaling a motion vector derived from the co-located block based on a POC difference value between the current block and a reference picture of the current block and a POC difference value between the co-located block and a reference picture of the co-located block, and modifying the scaled motion vector based on motion vector scaling information between a neighboring block of the current block and a co-located block of the neighboring block.
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70.发明申请公开(公告)号：US20220279171A1
公开(公告)日：2022-09-01
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
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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