公开(公告)号：US20230362362A1

公开(公告)日：2023-11-09

申请号：US18223115

申请日：2023-07-18

申请人： LX Semicon Co., Ltd.

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

IPC分类号： H04N19/11 ,  H04N19/105 ,  H04N19/117 ,  H04N19/176 ,  H04N19/593

CPC分类号： H04N19/11 ,  H04N19/105 ,  H04N19/117 ,  H04N19/176 ,  H04N19/593

摘要： An image encoding/decoding method and apparatus for performing intra prediction using a plurality of reference sample lines are provided. An image decoding method may comprise configuring a plurality of reference sample lines, reconstructing an intra prediction mode of a current block, and performing intra prediction for the current block based on the intra prediction mode and the plurality of reference sample lines.

公开(公告)号：US20230308634A1

公开(公告)日：2023-09-28

申请号：US18296344

申请日：2023-04-05

申请人： LX SEMICON CO., LTD.

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

IPC分类号： H04N19/103 ,  H04N19/11 ,  H04N19/146 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/44 ,  H04N19/463 ,  H04N19/91

CPC分类号： H04N19/103 ,  H04N19/11 ,  H04N19/146 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/44 ,  H04N19/463 ,  H04N19/91

摘要： Provided are method and apparatus methods and apparatuses for encoding an intra-prediction mode based on a secondary IPM. The present invention may comprises a first decision step of determining whether an intra-prediction mode of a current block is included in a first candidate mode set including M candidate modes (M is an integer equal to or greater than 1); a second decision step of determining whether the intra-prediction mode of the current block is included in a second candidate mode set including N candidate modes (N is an integer equal to or greater than 1) based on a first determination result representing a determination result of the first decision step; and an intra prediction mode encoding step of encoding the intra-prediction mode of the current block based on the first determination result or a second determination result representing a determination result of the second decision step.