公开(公告)号：US20220070475A1

公开(公告)日：2022-03-03

申请号：US17415505

申请日：2019-12-18

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY

Inventor： Jin Ho LEE ,  Jung Won KANG ,  Ha Hyun LEE ,  Sung Chang LIM ,  Hui Yong KIM ,  Jae Gon KIM ,  Do Hyeon PARK ,  Yung Lyul LEE

IPC: H04N19/176 ,  H04N19/51 ,  H04N19/119 ,  H04N19/105

Abstract: An image encoding/decoding method is provided. An image decoding method of the present invention may comprise constructing a motion information list for a current block, reconstructing a first index for a first triangular block within the current block and a second index for a second triangular block within the current block, and predicting the first triangular block and the second triangular block, based on the first index, the second index, and the motion information list.

公开(公告)号：US20220070463A1

公开(公告)日：2022-03-03

申请号：US17419204

申请日：2019-12-27

Applicant: Electronics and Telecommunications Research Institute ,  lNDUSTRY-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 ,  Do Hyeon PARK ,  Yung Lyul LEE

IPC: H04N19/13 ,  H04N19/176 ,  H04N19/159 ,  H04N19/105 ,  H04N19/119

Abstract: Disclosed herein is an image decoding method. The method of decoding an image comprises obtaining prediction information and residual signal information for a current block from a bitstream and reconstructing, based on the obtained prediction information and the residual signal information, the current block, wherein the prediction information is obtained through entropy decoding, and wherein a context model used for the entropy decoding of the prediction information is determined based on a prediction mode of a neighboring block of the current block.

公开(公告)号：US20220070446A1

公开(公告)日：2022-03-03

申请号：US17523025

申请日：2021-11-10

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/11 ,  H04N19/119 ,  H04N19/186 ,  H04N19/80 ,  H04N19/91 ,  H04N19/593 ,  H04N19/117 ,  H04N19/51 ,  H04N19/159 ,  H04N19/70 ,  H04N19/96 ,  H04N19/172

Abstract: An image encoding/decoding method and apparatus for predicting a second color component block using a first color component block are provided. An image decoding method of the present invention comprises deriving a prediction parameter using the first color component block, and predicting the second color component block using the derived prediction parameter.

公开(公告)号：US20220060714A1

公开(公告)日：2022-02-24

申请号：US17419220

申请日：2019-12-27

Applicant: Electronics and Telecommunications Research Institute ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Sung Chang LIM ,  Jin Ho LEE ,  Hui Yong KIM ,  Hae Chul CHOI ,  Dae Hyeok GWON ,  Jae Ryun CHOI

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: Disclosed herein is a method of decoding an image. The method includes determining a prediction mode of a current block as a merge mode with motion vector difference (MMVD), deriving a merge candidate list of the current block, deriving a motion vector predictor of the current block using the merge candidate list, deriving a motion vector difference of the current block, and deriving a motion vector of the current block using the motion vector predictor and the motion vector difference. Only some of candidates in the merge candidate list are used to derive the motion vector predictor.

公开(公告)号：US20210377526A1

公开(公告)日：2021-12-02

申请号：US17277987

申请日：2019-09-20

Applicant: Electronics and Telecommunications Research Institute ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Sung Chang LIM ,  Jin Ho LEE ,  Hui Yong KIM ,  Hae Chul CHOI ,  Dae Hyeok GWON

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/159 ,  H04N19/70 ,  H04N19/169 ,  H04N19/176

Abstract: An image encoding/decoding method is disclosed. An image decoding method of the present invention may comprise identifying a region by partitioning an image, and determining a prediction mode of the region on the basis of at least one of a size of the region, a partition shape, and a coding parameter of the region. The determined prediction mode of the region may be determined as a prediction mode of all coding blocks included in the region.

公开(公告)号：US20210352280A1

公开(公告)日：2021-11-11

申请号：US17278173

申请日：2019-09-20

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/107 ,  H04N19/176 ,  H04N19/573 ,  H04N19/139 ,  H04N19/119

Abstract: 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.

公开(公告)号：US20210344935A1

公开(公告)日：2021-11-04

申请号：US17377057

申请日：2021-07-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Hui Yong KIM ,  Se Yoon JEONG ,  Jong Ho KIM ,  Ha Hyun LEE ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/176 ,  H04N19/129 ,  H04N19/136

Abstract: Provided is a transform coefficient scan method including: determining a reference transform block for a decoding target block; deriving a scanning map of the decoding target block using scanning information of the reference transform block; and performing inverse scanning on a transform coefficient of the decoding target block using the derived scanning map. According to the present invention, picture encoding/decoding efficiency may be improved.

公开(公告)号：US20210306638A1

公开(公告)日：2021-09-30

申请号：US17266540

申请日：2019-08-06

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

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：US20210281838A1

公开(公告)日：2021-09-09

申请号：US17258124

申请日：2019-07-05

Applicant: Electronics and Telecommunications Research Institute ,  lNDUSTRY-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 ,  H04N19/593 ,  H04N19/184 ,  H04N19/186

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：US20210266533A1

公开(公告)日：2021-08-26

申请号：US17314192

申请日：2021-05-07

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.