QUALCOMM Incorporated
Excluding intra coded reference samples from local illumination compensation parameter derivation

Abstract:

A rectangular block of video data is obtained, and the lengths of first and second sides of the block are determined. Intra-coded samples may be excluded from the first and/or second sides, or replaced with intra-coded samples from a reference block. Lengths of the first and second sides are determined based on non-excluded samples. Based on these lengths, a shortest or greatest side is selected. In some cases, additional samples may be excluded so that the total number of samples is a power of two. Illumination compensation parameters are determined based on remaining (non-excluded) samples neighboring the current block.