Patent ID: 11889086
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A non-transitory computer readable storage medium storing instructions, wherein, when the instructions are executed by a processor, the instructions are configured to cause the processor to:
determine whether to apply a prediction refinement with optical flow (PROF) to an affine coded block; and
in response to determining to apply the PROF to the affine coded block:
generate spatial gradients gx(i,j) and gy(i,j) at a sample location (i,j) in the affine coded block,
generate a prediction refinement ΔI(i,j) based on the spatial gradients gx(i,j) and gy(i,j), and
add the prediction refinement ΔI(i,j) to a prediction sample I(i,j) to generate a refined prediction sample.