公开(公告)号：US20220224912A1

公开(公告)日：2022-07-14

申请号：US17607231

申请日：2020-05-12

Applicant: LG Electronics Inc.

Inventor： Nae Ri PARK ,  Jung Hak NAM ,  Hyeong Moon JANG ,  Jaehyun LIM ,  Seung Hwan KIM

IPC: H04N19/139 ,  H04N19/176 ,  H04N19/52 ,  H04N19/577 ,  H04N19/105 ,  H04N19/593 ,  H04N19/159

Abstract: An image encoding/decoding apparatus and method are provided. An image decoding method performed by an image decoding apparatus according to the present disclosure may comprise deriving a motion shift of a current block using motion information of a neighboring block of the current block, determining a collocated block of the current block using the motion shift, deriving a motion vector for at least one control point (CP) of the determined collocated block, and deriving at least one control point motion vector (CPMV) of the current block using the motion vector for the at least one CP.

公开(公告)号：US20220060751A1

公开(公告)日：2022-02-24

申请号：US17521086

申请日：2021-11-08

Applicant: LG Electronics Inc.

Inventor： Jung Hak NAM ,  Moonmo KOO ,  Jaehyun LIM ,  Seung Hwan KIM

IPC: H04N19/61 ,  H04N19/159 ,  H04N19/18 ,  H04N19/176

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method according to the present disclosure may comprise generating a prediction block by performing intra prediction with respect to a current block, generating a residual block by performing inverse transform with respect to a transform coefficient of the current block, and reconstructing the current block based on the prediction block and the residual block. The inverse transform may comprise inverse primary transform and inverse secondary transform, and the inverse secondary transform may be performed based on whether intra prediction for the current block is matrix based intra prediction (MIP).