公开(公告)号：US20240179320A1

公开(公告)日：2024-05-30

申请号：US18431917

申请日：2024-02-02

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

发明人： 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分类号： H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC分类号： H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

摘要： 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

申请人： Electronics and Telecommunications Research Institute

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

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

CPC分类号： H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/82

摘要： 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：US20240107002A1

公开(公告)日：2024-03-28

申请号：US18530617

申请日：2023-12-06

申请人： Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

发明人： Se Yoon JEONG ,  Hui Yong KIM ,  Sung Chang LIM ,  Jin Ho LEE ,  Ha Hyun LEE ,  Jong Ho KIM ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN ,  Gwang Hoon PARK ,  Kyung Yong KIM ,  Tae Ryong KIM ,  Han Soo LEE

IPC分类号： H04N19/10 ,  H04N19/105 ,  H04N19/136 ,  H04N19/196

CPC分类号： H04N19/10 ,  H04N19/105 ,  H04N19/136 ,  H04N19/197 ,  H04N19/196 ,  H04N19/61

摘要： A method for coding image information includes generating prediction information by predicting information on a current coding unit, and determining whether the information on the current coding unit is the same as the prediction information. When the information on the current coding unit is the same as the prediction information, a flag indicating that the information on the current coding unit is the same as the prediction information is coded and transmitted. When the information on the current coding unit is not the same as the prediction information, a flag indicating that the information on the current coding unit is not the same as the prediction information and the information on the current coding unit are coded and transmitted. At the generating of the prediction information, the prediction information is generated by using the information on the coding unit neighboring to the current coding unit

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.