公开(公告)号：US20220321874A1

公开(公告)日：2022-10-06

申请号：US17727526

申请日：2022-04-22

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： H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61

摘要： There is provided an image encoding/decoding method and apparatus. The image encoding method of the present invention includes: generating at least one candidate block including warped reference picture (WRP) Flag information in an advanced motion vector prediction (AMVP) mode; constructing a candidate list including the at least one candidate block; and generating a prediction block of a current block based on the candidate list.

公开(公告)号：US20220264151A1

公开(公告)日：2022-08-18

申请号：US17616581

申请日：2020-06-18

申请人： Electronics and Telecommunications Research Institute

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

IPC分类号： H04N19/61 ,  H04N19/593 ,  H04N19/11 ,  H04N19/91 ,  H04N19/176

摘要： Disclosed herein is a video decoding method including: obtaining a transform skip mode flag indicating whether or not a transform skip mode is applied to a current block; based on the transform skip mode flag, when a transform skip mode is applied to the current block, determining that secondary transform/inverse transform is not applied to the current block; and, according to the transform skip mode flag, when a transform skip mode is not applied to the current block, obtaining a transform matrix index for secondary transform/inverse transform of the current block and, according to the transform matrix index, determining whether or not secondary transform/inverse transform is applied to the current block.

公开(公告)号：US20220239927A1

公开(公告)日：2022-07-28

申请号：US17720646

申请日：2022-04-14

申请人： Electronics and Telecommunications Research Institute

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

IPC分类号： H04N19/159 ,  H04N19/593 ,  H04N19/50 ,  H04N19/105 ,  H04N19/117 ,  H04N19/126 ,  H04N19/13 ,  H04N19/43 ,  H04N19/61

摘要： An intra prediction method according to the present invention comprises the following steps: performing a directional prediction using at least one of a neighboring pixel of a current block and a left upper corner pixel positioned at a left upper corner of the current block so as to obtain a first prediction value for the current block; obtaining a second prediction value for the current block using the reference sample positioned in the current block; and weighted summing the first prediction value and the second prediction value using a weighting matrix so as to obtain a final prediction value for the current block. According to the present invention, image encoding/decoding efficiency may be improved.

公开(公告)号：US20220232221A1

公开(公告)日：2022-07-21

申请号：US17611871

申请日：2020-06-19

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

发明人： Jin Ho LEE ,  Jung Won KANG ,  Ha Hyun LEE ,  Sung Chang LIM ,  Hui Yong KIM ,  Jae Gon KIM ,  Do Hyeon PARK ,  Ji Hoon DO ,  Yong Uk YOON

IPC分类号： H04N19/14 ,  H04N19/12 ,  H04N19/60 ,  H04N19/176

摘要： Disclosed herein are an image encoding/decoding method and apparatus. The image decoding method of the present disclosure may include obtaining maximum transform block size information, deriving a maximum transform block size on the basis of the maximum transform block size information, and, determining ether or not a secondary inverse transform is applied to the current block on the basis of the maximum transform block size and a horizontal size and a vertical size of a current block.

公开(公告)号：US20220182661A1

公开(公告)日：2022-06-09

申请号：US17437356

申请日：2020-03-06

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： H04N19/593 ,  H04N19/52 ,  H04N19/139 ,  H04N19/169 ,  H04N19/105 ,  H04N19/176

摘要： Disclosed herein is an image encoding/decoding method. The image decoding method includes a step of comparing block vector information included in a history-based candidate list with a block vector of a neighboring block used as an intra block copy (IBC) block vector candidate for IBC prediction of a current block, and a step of adding the block vector information included in the history-based candidate list to an IBC block vector candidate list based on the comparing. The step of comparing is performed only with respect to a candidate lastly included in the history-based candidate list.

公开(公告)号：US20220182603A1

公开(公告)日：2022-06-09

申请号：US17436989

申请日：2020-03-06

申请人： Electronics and Telecommunications Research Institute

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

IPC分类号： H04N19/105 ,  H04N19/176 ,  H04N19/11 ,  H04N19/119 ,  H04N19/186 ,  H04N19/174 ,  H04N19/70

摘要： Provided are an image encoding/decoding method and device. An image decoding method according to the present invention comprises the steps of: determining an intra prediction mode of a current block; and generating a prediction block of the current block by performing prediction on the basis of the intra prediction mode of the current block. An intra prediction mode for a luminance block of the current block is derived by means of a most probable mode (MPM) list comprises a plurality of MPM candidates. The MPM list can be constructed independently from as to whether a plurality of reference sample lines are used and whether a divided prediction is performed by means of a sub-block.

公开(公告)号：US20220166973A1

公开(公告)日：2022-05-26

申请号：US17602690

申请日：2020-04-10

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 ,  Woo Woen GWUN ,  Won Jun LEE

IPC分类号： H04N19/11 ,  H04N19/184 ,  H04N19/176 ,  H04N19/159 ,  H04N19/105

摘要： An image encoding/decoding method and apparatus is provided. The method of decoding an image includes decoding at least one of prediction mode information of a neighbor block of a current block and length information of the current block, deriving an intra prediction mode of the current block into a predetermined mode using the decoded information, and reconstructing the current block based on the intra prediction mode of the current block.

公开(公告)号：US20220150529A1

公开(公告)日：2022-05-12

申请号：US17277186

申请日：2019-09-17

申请人： Electronics and Telecommunications Research Institute

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

IPC分类号： H04N19/513 ,  H04N19/172 ,  H04N19/105 ,  H04N19/109 ,  H04N19/31 ,  H04N19/43 ,  H04N19/184 ,  H04N19/85 ,  H04N19/176 ,  H04N19/139

摘要： The present specification discloses a method of decoding an image. The method includes obtaining a motion vector of a collocated block included in a reference picture of a current block in a temporal motion buffer; changing a format of the obtained motion vector; and deriving the motion vector, in which the format is changed, into a temporal motion vector of the current block.

公开(公告)号：US20220132152A1

公开(公告)日：2022-04-28

申请号：US17568678

申请日：2022-01-04

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

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：US20220109846A1

公开(公告)日：2022-04-07

申请号：US17419142

申请日：2019-12-27

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

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.