Patent ID: 11876960
Assignee: LG ELECTRONICS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. An image encoding method performed by an encoding apparatus, comprising:
determining an inter prediction mode of a current block and generating inter prediction mode information indicating the inter prediction mode;
generating a merge candidate list of the current block based on the inter prediction mode;
selecting one of candidates included in the merge candidate list and generating selection information indicating the selected candidate; and
encoding image information comprising the inter prediction mode information and the selection information,
wherein the candidates include an inherited affine merge candidate and a constructed affine merge candidate, wherein the constructed affine merge candidate includes control point motion vectors (CPMVs),
wherein the inherited affine merge candidate is derived based on control point motion vectors (CPMVs) of a neighboring block of the current block,
wherein the constructed affine merge candidate includes CPMVs of control points (CPs),
wherein based on the constructed affine merge candidate including a CPMV for a CP0 and a bi-prediction being applied to the current block, weight index information for the constructed affine merge candidate is fixed to be equal to weight index information of a specific block among neighboring blocks of the CP0 of the current block, wherein the CP0 is related to a top-left corner of the current block,
wherein the specific block is a block used for deriving the CPMV for the CP0, and
wherein the constructed affine merge candidate is inserted after the inherited affine merge candidate in the merge candidate list.