US 12,470,697 B2
Local illumination compensation with multiple linear models
Ya Chen, Rennes (FR); Philippe Bordes, Laille (FR); Antoine Robert, Mézières sur Couesnon (FR); and Karam Naser, Mouazé (FR)
Assigned to InterDigital CE Patent Holdings, SAS, Paris (FR)
Appl. No. 18/722,307
Filed by InterDigital CE Patent Holdings, SAS, Paris (FR)
PCT Filed Dec. 19, 2022, PCT No. PCT/EP2022/086589
§ 371(c)(1), (2) Date Jun. 20, 2024,
PCT Pub. No. WO2023/117861, PCT Pub. Date Jun. 29, 2023.
Claims priority of application No. 21306875 (EP), filed on Dec. 21, 2021.
Prior Publication US 2024/0388691 A1, Nov. 21, 2024
Int. Cl. H04N 7/12 (2006.01); H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/167 (2014.01); H04N 19/176 (2014.01); H04N 19/196 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/132 (2014.11); H04N 19/167 (2014.11); H04N 19/176 (2014.11); H04N 19/196 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A video decoding device, comprising:
a processor configured to:
determine that sub-partition-based local illumination compensation (sub-LIC) is enabled for a current block;
divide the current block into a first sub-partition and a second sub-partition;
identify a first template associated with the first sub-partition;
derive a first local illumination compensation (LIC) parameter set based on the first template associated with the first sub-partition;
identify a second template associated with the second sub-partition;
derive a second LIC parameter set based on the second template associated with the second sub-partition;
apply the first LIC parameter set on a reference block of the current block to obtain a first prediction block of the current block;
apply the second LIC parameter set on the reference block of the current block to obtain a second prediction block of the current block; and
decode the current block based on the first prediction block and the second prediction block.