Patent ID: 11889110
Assignee: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A computing device comprising:
one or more processors;
a non-transitory computer-readable storage medium storing instructions executable by the one or more processors, wherein the one or more processors are configured to:
obtain a first reference picture I associated with a video block that is coded by affine mode within the video signal;
obtain control point motion vectors (CPMVs) of an affine coding block based on the video block;
obtain prediction samples I(i, j) of the affine coding block from reference samples in the first reference picture I based on the CPMVs, wherein i and j represent a coordinate of one sample within the video block;
derive prediction refinement with optical flow (PROF) prediction sample refinements of the affine coding block based on PROF;
receive a local illumination compensation (LIC) flag that indicates whether an LIC is applied to the affine coding block;
derive, in response to determining that the LIC is applied, LIC weight and offset based on neighboring reconstructed samples of the affine coding block and their corresponding reference samples in the first reference picture; and
obtain final prediction samples of the affine coding block based on the PROF prediction sample refinements and the LIC weight and offset.