US 12,452,438 B1
Systems and methods for performing chroma local illumination compensation derivation based on a quantization parameter in video coding
Tae Meon Bae, McLean, VA (US); and Sachin G. Deshpande, Vancouver, WA (US)
Assigned to Sharp Kabushiki Kaisha, Sakai (JP)
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed on Apr. 9, 2024, as Appl. No. 18/630,873.
Int. Cl. H04N 19/00 (2014.01); H04N 19/124 (2014.01); H04N 19/132 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/463 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/186 (2014.11) [H04N 19/124 (2014.11); H04N 19/132 (2014.11); H04N 19/176 (2014.11); H04N 19/463 (2014.11); H04N 19/70 (2014.11)] 6 Claims
OG exemplary drawing
 
1. A method of video decoding, the method comprising:
receiving a syntax element indicating local illumination compensation is to be performed for a video block; and
determining a value of a chroma local illumination compensation variable indicating whether local illumination compensation is to be performed for a chroma component of the video block,
wherein determining the value of the chroma local illumination compensation variable includes:
determining whether a ratio of sum of absolute difference and mean removed sum of absolute difference between a current sample template and reference sample template is less than a threshold,
determining whether a number of samples in the current sample template is within first and second size threshold values, and
determining whether a quantization parameter is within first and second quantization threshold values.