公开(公告)号：US20240179320A1

公开(公告)日：2024-05-30

申请号：US18431917

申请日：2024-02-02

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 ,  Do Hyeon PARK

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: An image encoding/decoding method is provided. An image decoding method of the present invention may comprise deriving an intra-prediction mode of a current luma block, deriving an intra-prediction mode of a current chroma block based on the intra-prediction mode of the current luma block, generating a prediction block of the current chroma block based on the intra-prediction mode of the current chroma block, and the deriving of an intra-prediction mode of a current chroma block may comprise determining whether or not CCLM (Cross-Component Linear Mode) can be performed for the current chroma block.

公开(公告)号：US20240137507A1

公开(公告)日：2024-04-25

申请号：US18399315

申请日：2023-12-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Ha Hyun LEE ,  Dong San JUN ,  Hyun Suk KO ,  Jin Ho LEE ,  Hui Yong KIM

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/169 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/82

Abstract: The present invention relates to a video encoding/decoding method and apparatus. The video decoding method according to the present invention may comprise decoding filter information on a coding unit; classifying samples in the coding unit into classes on a per block classification unit basis; and filtering the coding unit having the samples classified into the classes on a per block classification unit basis by using the filter information.

公开(公告)号：US20240080450A1

公开(公告)日：2024-03-07

申请号：US18500927

申请日：2023-11-02

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: H04N19/137 ,  H04N19/105 ,  H04N19/169 ,  H04N19/176

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/176 ,  H04N19/1883

Abstract: The present invention discloses an image decoding method, the method including generating a candidate list including motion information derived from a spatial neighboring block and a temporal neighboring block adjacent to a current block; deriving motion information of the current block using the candidate list; generating a prediction block of the current block using the derived motion information; and updating the derived motion information in a motion information list, wherein the generating of the candidate list is performed in such a manner as to include at least one information of the motion information included in the updated motion information list in a block decoded before the current block.

公开(公告)号：US20240073448A1

公开(公告)日：2024-02-29

申请号：US18386181

申请日：2023-11-01

Applicant: Electronics and Telecommunications Research Institute

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.

公开(公告)号：US20240064295A1

公开(公告)日：2024-02-22

申请号：US18495579

申请日：2023-10-26

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: H04N19/11 ,  H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/593 ,  H04N19/186

CPC classification number: H04N19/11 ,  H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/593 ,  H04N19/186 ,  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.

公开(公告)号：US20230421778A1

公开(公告)日：2023-12-28

申请号：US18463848

申请日：2023-09-08

Applicant: Electronics and Telecommunications Research Institute

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 ,  H04N19/593 ,  H04N19/13 ,  H04N19/126 ,  H04N19/176 ,  H04N19/50

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/593 ,  H04N19/13 ,  H04N19/126 ,  H04N19/176 ,  H04N19/50

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.

公开(公告)号：US20230370585A1

公开(公告)日：2023-11-16

申请号：US18358871

申请日：2023-07-25

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 ,  H04N19/159 ,  H04N19/137 ,  H04N19/172 ,  G06T5/00 ,  G06T7/246 ,  H04N19/51 ,  G06T5/50 ,  H04N19/176 ,  H04N19/139 ,  H04N19/513 ,  H04N19/174 ,  G06T3/00

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

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：US20230362369A1

公开(公告)日：2023-11-09

申请号：US18353731

申请日：2023-07-17

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/174 ,  H04N19/119 ,  H04N19/172

CPC classification number: H04N19/119 ,  H04N19/172 ,  H04N19/174

Abstract: An image encoding/decoding method is disclosed. An image decoding method of the present invention may comprise deriving slice mode information on a slice included in a current picture, deriving slice identification information on the basis of the slice mode information, and decoding the slice on the basis of the slice identification information.

公开(公告)号：US20230328250A1

公开(公告)日：2023-10-12

申请号：US18322742

申请日：2023-05-24

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

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

IPC: H04N19/13 ,  H04N19/176 ,  H04N19/124 ,  H04N19/70 ,  H04N19/103

CPC classification number: H04N19/13 ,  H04N19/103 ,  H04N19/124 ,  H04N19/176 ,  H04N19/70

Abstract: 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：US20230132843A1

公开(公告)日：2023-05-04

申请号：US18087577

申请日：2022-12-22

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

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Ha Hyun LEE ,  Jin Ho LEE ,  Hui Yong KIM ,  Dae Yeon KIM ,  Wook Je JEONG ,  Hyun Gyu KIM

IPC: H04N19/13 ,  H04N19/176 ,  H04N19/70

Abstract: An image decoding method is disclosed in the present specification. A method of decoding an image, the method may comprises determining whether to perform a context update for a first syntax element of a current block, updating, on the basis of the determination, a context for entropy decoding of the first syntax element and generating, on the basis of the updated context, a bin for the first syntax element, and wherein whether to perform the context update is determined on the basis of the number of pre-decoded predetermined syntax elements for the current block.