公开(公告)号：US20220109846A1

公开(公告)日：2022-04-07

申请号：US17419142

申请日：2019-12-27

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 ,  H04N19/186 ,  H04N19/176 ,  H04N19/159 ,  H04N19/105

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：US20220070474A1

公开(公告)日：2022-03-03

申请号：US17524570

申请日：2021-11-11

Applicant: Electronics and Telecommunications Research Institute

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

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

Abstract: An image encoding/decoding method and apparatus for performing intra prediction mode based intra prediction are provided. An image decoding method may comprise decoding an intra prediction mode of a current block, deriving at least one intra prediction mode from the decoded intra prediction mode of the current block, generating two or more intra prediction blocks using the intra prediction mode of the current block and the derived intra prediction mode, and generating an intra prediction block of the current block based on the two or more intra prediction blocks.

公开(公告)号：US20220038682A1

公开(公告)日：2022-02-03

申请号：US17277541

申请日：2019-09-18

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/137 ,  H04N19/51 ,  H04N19/96

Abstract: An image encoding/decoding method is disclosed. Present invention of the method of decoding an image comprises deriving motion information of a current block by using a candidate list, generating a prediction block of the current block by using the motion information of the current block and adding the motion information of the current block in the candidate list, wherein the candidate list is used for inter prediction of a block to be decoded after the current block.

公开(公告)号：US20220014736A1

公开(公告)日：2022-01-13

申请号：US17319175

申请日：2021-05-13

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：US20210274215A1

公开(公告)日：2021-09-02

申请号：US17260938

申请日：2019-07-16

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: H04N19/56 ,  H04N19/139 ,  H04N19/105 ,  H04N19/96 ,  H04N19/176

Abstract: An image decoding method is disclosed in the present specification. An image decoding method according to the present invention comprises the step of deriving a first candidate list for the current block by using motion information of neighboring blocks of the current block; deriving a second candidate list for the current block by using previously reconstructed motion information; deriving a third candidate list by using the first candidate list and the second candidate list; and deriving a prediction block for the current block by using the third candidate list.

公开(公告)号：US20210274197A1

公开(公告)日：2021-09-02

申请号：US17259842

申请日：2019-07-05

Applicant: Electronics and Telecommunications Research Institute ,  CHIPS&MEDIA, INC ,  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 ,  Dae Yeon KIM ,  Do Hyeon PARK ,  Jae Gon KIM ,  Yong Uk YOON ,  Yung Lyul LEE

IPC: H04N19/18 ,  H04N19/119 ,  H04N19/129 ,  H04N19/176 ,  H04N19/60

Abstract: Disclosed in a method of decoding an image. The method includes determining a zero out region within a current block; partitioning a region except for the zero out region within the current block, on a per transform coefficient group basis; and decoding a transform coefficient on the per transform coefficient group basis.

公开(公告)号：US20210266528A1

公开(公告)日：2021-08-26

申请号：US17315637

申请日：2021-05-10

Applicant: Electronics and Telecommunications Research Institute

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 ,  H04N19/119 ,  H04N19/176 ,  H04N19/147 ,  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.

公开(公告)号：US20210136364A1

公开(公告)日：2021-05-06

申请号：US16766611

申请日：2018-11-22

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/105 ,  H04N19/593 ,  H04N19/132

Abstract: An image encoding/decoding method is disclosed. A method of decoding an image, the method comprising, deriving an intra prediction mode for a current block, decoding at least one original sample that is present in a rightmost column and a bottommost row (a bottom row) of the current block, constructing a reference sample by using the at least one decoded original sample and performing intra prediction on the current block by using the constructed reference sample.

公开(公告)号：US20210120261A1

公开(公告)日：2021-04-22

申请号：US16982972

申请日：2019-03-21

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/96 ,  H04N19/105 ,  H04N19/159 ,  H04N19/423

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, loading information of a neighboring block of a current block; decoding a current block using the loaded information of the neighboring block; and saving information of the current block that is decoded.

公开(公告)号：US20210051330A1

公开(公告)日：2021-02-18

申请号：US17038332

申请日：2020-09-30

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 ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: 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.