公开(公告)号：US20240098302A1

公开(公告)日：2024-03-21

申请号：US18517335

申请日：2023-11-22

申请人： Electronics and Telecommunications Research Institute ,  Industry-University Cooperation Foundation Korea Aerospace University

发明人： Sung Chang LIM ,  Hui Yong KIM ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM ,  Jae Gon KIM ,  Sang Yong LEE ,  Un Ki PARK

IPC分类号： H04N19/56 ,  H04N19/13 ,  H04N19/513 ,  H04N19/52 ,  H04N19/593 ,  H04N19/70

CPC分类号： H04N19/56 ,  H04N19/13 ,  H04N19/513 ,  H04N19/52 ,  H04N19/593 ,  H04N19/70 ,  H04N19/105

摘要： Disclosed are a method for inducing a prediction motion vector and an apparatus using the same. An image decoding method can include: a step of determining the information related to a plurality of spatial candidate prediction motion vectors from peripheral predicted blocks of a predicted target block; and a step of determining the information related to temporal candidate prediction motion vectors on the basis of the information related to the plurality of spatial candidate prediction motion vectors. Accordingly, the present invention can reduce complexity and can enhance coding efficiency when inducing the optimum prediction motion vector.

公开(公告)号：US20240080450A1

公开(公告)日：2024-03-07

申请号：US18500927

申请日：2023-11-02

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

发明人： 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分类号： H04N19/137 ,  H04N19/105 ,  H04N19/169 ,  H04N19/176

CPC分类号： H04N19/137 ,  H04N19/105 ,  H04N19/176 ,  H04N19/1883

摘要： 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

申请人： Electronics and Telecommunications Research Institute

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

IPC分类号： H04N19/577 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

CPC分类号： H04N19/577 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

摘要： 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

申请人： Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

发明人： 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分类号： H04N19/11 ,  H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/593 ,  H04N19/186

CPC分类号： H04N19/11 ,  H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/593 ,  H04N19/186 ,  H04N19/96

摘要： 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：US20240022747A1

公开(公告)日：2024-01-18

申请号：US18475817

申请日：2023-09-27

申请人： Electronics and Telecommunications Research Institute

发明人： Sung Chang LIM ,  Hui Yong KIM ,  Se Yoon JEONG ,  Suk Hee CHO ,  Jong Ho KIM ,  Ha Hyun LEE ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN

IPC分类号： H04N19/44 ,  H04N19/52 ,  H04N19/503 ,  H04N19/50

CPC分类号： H04N19/44 ,  H04N19/52 ,  H04N19/503 ,  H04N19/50 ,  H04N19/597

摘要： An inter prediction method according to the present invention comprises the steps of: selecting candidate units from among reconstructed neighbor units; creating a candidate unit set with respect to units to be decoded, using the selected candidate units; determining a reference unit from among the candidate units which constitute the created candidate unit set; and performing inter prediction on the units to be decoded, using the determined reference unit. According to the present invention, image encoding/decoding efficiency can be improved.

公开(公告)号：US20230421778A1

公开(公告)日：2023-12-28

申请号：US18463848

申请日：2023-09-08

申请人： Electronics and Telecommunications Research Institute

发明人： 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分类号： H04N19/159 ,  H04N19/105 ,  H04N19/593 ,  H04N19/13 ,  H04N19/126 ,  H04N19/176 ,  H04N19/50

CPC分类号： H04N19/159 ,  H04N19/105 ,  H04N19/593 ,  H04N19/13 ,  H04N19/126 ,  H04N19/176 ,  H04N19/50

摘要： 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

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 ,  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分类号： 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

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：US20230362369A1

公开(公告)日：2023-11-09

申请号：US18353731

申请日：2023-07-17

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

CPC分类号： H04N19/119 ,  H04N19/172 ,  H04N19/174

摘要： 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：US20230336779A1

公开(公告)日：2023-10-19

申请号：US18340762

申请日：2023-06-23

申请人： Electronics and Telecommunications Research Institute

发明人： Jin Ho LEE ,  Hui Yong KIM ,  Sung Chang LIM ,  Jin Soo CHOI ,  Jin Woong KIM

IPC分类号： H04N19/593 ,  H04N19/117 ,  H04N19/157 ,  H04N19/182 ,  H04N19/105 ,  H04N19/159 ,  H04N19/11 ,  H04N19/122 ,  H04N19/137 ,  H04N19/82 ,  H04N19/44 ,  H04N19/136 ,  H04N19/80

CPC分类号： H04N19/593 ,  H04N19/117 ,  H04N19/157 ,  H04N19/182 ,  H04N19/105 ,  H04N19/159 ,  H04N19/11 ,  H04N19/122 ,  H04N19/137 ,  H04N19/82 ,  H04N19/44 ,  H04N19/136 ,  H04N19/80 ,  H04N19/176

摘要： According to the present invention, an image encoding/decoding method comprises the steps of: performing an intra prediction on a current block so as to generate a prediction block; performing filtering on a filtering target pixel in the prediction block on the basis of the intra prediction mode of the current block so as to generate a final prediction block; and generating a reconstructed block on the basis of a reconstructed differential block corresponding to the current block and on the final prediction block. According to the present invention, image encoding/decoding efficiency can be improved.

公开(公告)号：US20230328250A1

公开(公告)日：2023-10-12

申请号：US18322742

申请日：2023-05-24

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 ,  H04N19/176 ,  H04N19/124 ,  H04N19/70 ,  H04N19/103

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.