公开(公告)号：US12022119B2

公开(公告)日：2024-06-25

申请号：US17616581

申请日：2020-06-18

申请人： Electronics and Telecommunications Research Institute

发明人： Sung Chang Lim ,  Jung Won Kang ,  Ha Hyun Lee ,  Jin Ho Lee ,  Hui Yong Kim

IPC分类号： H04N19/61 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593 ,  H04N19/91

CPC分类号： H04N19/61 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593 ,  H04N19/91

摘要： Disclosed herein is a video decoding method including: obtaining a transform skip mode flag indicating whether or not a transform skip mode is applied to a current block; based on the transform skip mode flag, when a transform skip mode is applied to the current block, determining that secondary transform/inverse transform is not applied to the current block; and, according to the transform skip mode flag, when a transform skip mode is not applied to the current block, obtaining a transform matrix index for secondary transform/inverse transform of the current block and, according to the transform matrix index, determining whether or not secondary transform/inverse transform is applied to the current block.

公开(公告)号：US11936853B2

公开(公告)日：2024-03-19

申请号：US18094456

申请日：2023-01-09

申请人： Electronics and Telecommunications Research Institute

发明人： 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分类号： H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

CPC分类号： H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

摘要： 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.

公开(公告)号：US11863798B2

公开(公告)日：2024-01-02

申请号：US16308208

申请日：2017-07-10

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

发明人： 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分类号： H04N19/91 ,  H04N19/149 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/182 ,  H04N19/146

CPC分类号： H04N19/91 ,  H04N19/146 ,  H04N19/149 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44

摘要： 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.

公开(公告)号：US11856197B2

公开(公告)日：2023-12-26

申请号：US17957862

申请日：2022-09-30

申请人： Electronics and Telecommunications Research Institute ,  RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

发明人： Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Jin Ho Lee ,  Hui Yong Kim ,  Byeung Woo Jeon ,  Jee Yoon Park

IPC分类号： H04N19/12 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

CPC分类号： H04N19/12 ,  H04N19/176 ,  H04N19/46 ,  H04N19/619

摘要： The present specification discloses a method of decoding an image. The method of decoding an image according to the method includes: obtaining transform skip information of a current block from a bitstream; obtaining multiple transform selection information of the current block on the basis of the transform skip information from the bitstream; and performing inverse transform on the current block on the basis of the multiple transform selection information, wherein the multiple transform selection information is used to set each of a horizontal transform type and a vertical transform type.

公开(公告)号：US11843773B2

公开(公告)日：2023-12-12

申请号：US17532442

申请日：2021-11-22

申请人： Electronics and Telecommunications Research Institute

发明人： Jin Ho Lee ,  Jung Won Kang ,  Ha Hyun Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC分类号： H04N19/117 ,  H04N19/105 ,  H04N19/176 ,  H04N19/30 ,  H04N19/14 ,  H04N19/80 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/51 ,  H04N19/61 ,  H04N19/172

CPC分类号： H04N19/117 ,  H04N19/105 ,  H04N19/124 ,  H04N19/13 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/30 ,  H04N19/51 ,  H04N19/61 ,  H04N19/80 ,  H04N19/172

摘要： A video decoding method according to an embodiment of the present invention may include determining a type of a filter to be applied to a first-layer picture which a second-layer picture as a decoding target refers to; determining a filtering target of the first-layer picture to which the filter is applied; filtering the filtering target based on the type of the filter; and adding the filtered first-layer picture to a second-layer reference picture list. Accordingly, the video decoding method and an apparatus using the same may reduce a prediction error in an upper layer and enhance encoding efficiency.

公开(公告)号：US11800113B2

公开(公告)日：2023-10-24

申请号：US16301409

申请日：2017-07-11

申请人： Electronics and Telecommunications Research Institute

发明人： 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

IPC分类号： H04N19/70 ,  H04N19/139 ,  H04N19/137 ,  H04N19/105 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513 ,  H04N19/51 ,  H04N19/44 ,  H04N19/91 ,  H04N19/146

CPC分类号： H04N19/137 ,  H04N19/105 ,  H04N19/13 ,  H04N19/146 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/51 ,  H04N19/513 ,  H04N19/91

摘要： The present invention relates to a video encoding and decoding method. A video decoding method for the same may include: obtaining granularity information; determining a sharing region based on the granularity information; and generating a prediction block of a current block by using motion information of the sharing region when the current block corresponds to the sharing region.

公开(公告)号：US11758128B2

公开(公告)日：2023-09-12

申请号：US17820539

申请日：2022-08-17

申请人： Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

发明人： 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分类号： H04N19/105 ,  G06T5/00 ,  G06T5/50 ,  G06T7/246 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513 ,  G06T3/00 ,  H04N19/137 ,  H04N19/51 ,  H04N19/172 ,  H04N19/174

CPC分类号： H04N19/105 ,  G06T5/006 ,  G06T5/50 ,  G06T7/248 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/521 ,  G06T3/0006 ,  H04N19/174

摘要： 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.

公开(公告)号：US11706418B2

公开(公告)日：2023-07-18

申请号：US17224623

申请日：2021-04-07

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  CHIPS&MEDIA, INC.

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.

公开(公告)号：US11704839B2

公开(公告)日：2023-07-18

申请号：US17124226

申请日：2020-12-16

申请人： Electronics and Telecommunications Research Institute

发明人： Soo Woong Kim ,  Jung Won Kang ,  Gun Bang ,  Jin Ho Lee ,  Ha Hyun Lee ,  Sung Chang Lim

IPC分类号： G06T9/00 ,  G06T15/20 ,  G06T15/04 ,  G06T17/20

CPC分类号： G06T9/001 ,  G06T15/04 ,  G06T15/205 ,  G06T17/20

摘要： The present disclosure provides a multi-view image decoding method including: obtaining, from a bitstream, three-dimensional geometry information indicating a three-dimensional space of a multi-view image, view independent component information indicating a view independent component, which is uniformly applied to every view, and view dependent component information indicating a view dependent component, which is differently applied according to views; determining a view dependent component for a texture map of a current view from the view dependent component information; generating the texture map of the current view from a view independent component of the view independent component information and the determined view dependent component for the current view; and reconstructing a current view image according to a three-dimensional space that is constructed according to the texture map of the current view and the three-dimensional geometry information.

公开(公告)号：US11695926B2

公开(公告)日：2023-07-04

申请号：US17278173

申请日：2019-09-20

申请人： Electronics and Telecommunications Research Institute

发明人： Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Jin Ho Lee ,  Hui Yong Kim

IPC分类号： H04N19/176 ,  H04N19/107 ,  H04N19/119 ,  H04N19/139 ,  H04N19/573 ,  H04N19/124

CPC分类号： H04N19/107 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/573 ,  H04N19/124

摘要： An image decoding method is disclosed in the present specification. An image decoding method according to the present invention may comprise determining a prediction mode of a current block and performing prediction with respect to the current block on the basis of the determined prediction mode.