US 11,997,308 B2
Local illumination compensation for video encoding or decoding
Philippe Bordes, Laille (FR); Franck Galpin, Thorigne-Fouillard (FR); and Fabrice Urban, Thorigne Fouillard (FR)
Assigned to InterDigital Madison Patent Holdings, SAS, Paris (FR)
Appl. No. 17/436,922
Filed by InterDigital Madison Patent Holdings, SAS, Paris (FR)
PCT Filed Mar. 5, 2020, PCT No. PCT/US2020/021098
§ 371(c)(1), (2) Date Sep. 7, 2021,
PCT Pub. No. WO2020/185491, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 19035269 (EP), filed on Mar. 8, 2019; application No. 19305270 (EP), filed on Mar. 8, 2019; application No. 19305274 (EP), filed on Mar. 8, 2019; and application No. 19305573 (EP), filed on May 6, 2019.
Prior Publication US 2022/0159290 A1, May 19, 2022
Int. Cl. H04N 7/12 (2006.01); H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/139 (2014.01); H04N 19/159 (2014.01); H04N 19/172 (2014.01); H04N 19/176 (2014.01); H04N 19/182 (2014.01); H04N 19/196 (2014.01); H04N 19/52 (2014.01)
CPC H04N 19/52 (2014.11) [H04N 19/105 (2014.11); H04N 19/132 (2014.11); H04N 19/139 (2014.11); H04N 19/159 (2014.11); H04N 19/172 (2014.11); H04N 19/176 (2014.11); H04N 19/182 (2014.11); H04N 19/196 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A video encoding method comprising predicting picture data for at least one block in a picture, wherein the predicting comprises performing motion compensation and local illumination compensation based on a reference block, the local illumination compensation comprising applying a linear model defined by at least a first parameter determined as a ratio between a sum of absolute first differences, each first difference being between a neighboring reconstructed sample and an average value of the neighboring reconstructed samples in a first L-shape and a sum of absolute second differences, each second difference being between a reference sample of the reference block and an average value of the reference samples in a second L-shape, said first L-shape being adjacent to the at least one block and said second L-shape being adjacent to the reference block.