公开(公告)号：US20230199174A1

公开(公告)日：2023-06-22

申请号：US18110702

申请日：2023-02-16

Applicant: Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Jung Won KANG ,  Ha Hyun LEE ,  Sung Chang LIM ,  Jin Ho LEE ,  Hui Yong KIM ,  Gwang Hoon PARK ,  Tae Hyun KIM ,  Dae Young LEE

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/423 ,  H04N19/46 ,  H04N19/51

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/423 ,  H04N19/46 ,  H04N19/51

Abstract: An image decoding method is disclosed in the present specification. An image decoding method according to the present invention may comprise deriving a candidate list for inter-prediction of a current block, deriving motion information of the current block by using the candidate list, deriving a cumulative coding information candidate by using the motion information of the current block, inserting the derived cumulative coding information candidate into a cumulative coding information candidate list and updating the candidate list by using the cumulative coding information candidate list, wherein the updated candidate list is used for inter-prediction of a block to be decoded after the current block.

公开(公告)号：US20230188708A1

公开(公告)日：2023-06-15

申请号：US18094456

申请日：2023-01-09

Applicant: Electronics and Telecommunications Research Institute

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

CPC classification number: H04N19/105 ,  H04N19/70 ,  H04N19/96 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

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.

公开(公告)号：US20230138960A1

公开(公告)日：2023-05-04

申请号：US18092066

申请日：2022-12-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Ha Hyun LEE ,  Sung Chang LIM ,  Jung Won KANG ,  Jin Ho LEE ,  Hui Yong KIM

IPC: H04N19/513 ,  H04N19/56 ,  H04N19/91

Abstract: The present invention is about an image encoding/decoding method and apparatus. According to present invention, a method of decoding an image, the method comprising, deriving an initial motion vector of a current block; deriving a refined motion vector by using the initial motion vector; and generating a prediction block of the current block by using the refined motion vector.

公开(公告)号：US20230088384A1

公开(公告)日：2023-03-23

申请号：US17988972

申请日：2022-11-17

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 ,  H04N19/176 ,  H04N19/159 ,  G06F17/18 ,  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.

公开(公告)号：US20230007263A1

公开(公告)日：2023-01-05

申请号：US17767705

申请日：2020-10-12

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

Inventor： Jung Won KANG ,  Ha Hyun LEE ,  Sung Chang LIM ,  Jin Ho LEE ,  Byeung Woo JEON ,  Jee Yoon PARK

IPC: H04N19/132 ,  H04N19/186 ,  H04N19/176 ,  H04N19/46

Abstract: Disclosed herein is a video decoding method. The video decoding method includes: obtaining a chroma residual joint flag of a current block indicating whether or not a chroma residual joint mode is applied to the current block; obtaining, from a bitstream, a transform skip mode flag for a luma component of the current block and a transform skip mode flag for a first chroma component; when the chroma residual joint flag indicates that a chroma residual joint mode is applied to the current block, determining whether or not a transform skip mode is applied to a second chroma component of the current block, according to the transform skip mode flag for the first chroma component; and, when the chroma residual joint flag indicates that a chroma residual joint mode is not applied to the current block, obtaining, from the bitstream, a transform skip mode flag for the second chroma component of the current block.

公开(公告)号：US20220408110A1

公开(公告)日：2022-12-22

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: H04N19/593 ,  H04N19/107 ,  H04N19/127 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/503 ,  G06T9/00 ,  H04N19/189

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.

公开(公告)号：US20220408083A1

公开(公告)日：2022-12-22

申请号：US17820539

申请日：2022-08-17

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 ,  H04N19/137 ,  H04N19/51 ,  H04N19/172 ,  H04N19/176 ,  H04N19/139 ,  H04N19/159 ,  H04N19/513 ,  G06T7/246 ,  G06T5/00 ,  G06T5/50

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.

公开(公告)号：US20220385895A1

公开(公告)日：2022-12-01

申请号：US17885349

申请日：2022-08-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  CHIPS&MEDIA,INC ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

Inventor： Jin Ho LEE ,  Jung Won KANG ,  Ha Hyun LEE ,  Sung Chang LIM ,  Hui Yong KIM ,  Dae Yeon KIM ,  Yung Lyul LEE

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/593

Abstract: The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise acquiring transform coefficients distribution information of a neighboring block from a bitstream; direction-adaptively determining an intra prediction mode of a current block to be decoded, according to the transform coefficients distribution information of the neighboring block; and reconstructing the current block, based on the determined intra prediction mode, wherein the direction-adaptively determining includes determining similarity flag information corresponding to the neighboring block, based on the transform coefficients distribution information of the neighboring block.

公开(公告)号：US20220377323A1

公开(公告)日：2022-11-24

申请号：US17879237

申请日：2022-08-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Jung Won KANG ,  Ha Hyun LEE ,  Sung Chang LIM ,  Hui Yong KIM

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/117 ,  H04N19/176 ,  H04N19/593

Abstract: An image encoding/decoding method is disclosed. An image decoding method of the present invention may comprise deriving an intra-prediction mode of a current block by using an intra-prediction mode of a neighbor block adjacent to the current block, configuring a reference sample of the current block, and performing intra-prediction on the current block by using the intra-prediction mode and the reference sample, wherein when the intra-prediction mode of the neighbor block is unavailable, the intra-prediction mode of the neighbor block may be replaced with a planar mode.

公开(公告)号：US20220368942A1

公开(公告)日：2022-11-17

申请号：US17878630

申请日：2022-08-01

Applicant: Electronics and Telecommunications Research Institute ,  CHIPS&MEDIA, INC

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Sung Chang LIM ,  Jin Ho LEE ,  Hui Yong KIM ,  Dae Yeon KIM ,  Dong Jin PARK

IPC: H04N19/55 ,  H04N19/182 ,  H04N19/563

Abstract: Disclosed is a method of decoding an image and a method of encoding an image. The method of decoding an image includes: obtaining motion-constrained tile set information; determining, on the basis of the motion-constrained tile set information, a first boundary region of a collocated tile set within a reference picture, which corresponds to a motion-constrained tile set; padding a second boundary region corresponding to the first boundary region; and performing inter prediction on the motion-constrained tile set by using a collocated tile set that includes the padded second boundary region.