US 12,137,228 B2
Estimating weighted-prediction parameters
Philippe Bordes, Laille (FR); Tangi Poirier, Thorigné-Fouillard (FR); Fabrice Leleannec, Betton (FR); and Philippe De Lagrange, Betton (FR)
Assigned to INTERDIGITAL CE PATENT HOLDINGS, SAS, Paris (FR)
Appl. No. 17/787,533
Filed by INTERDIGITAL CE PATENT HOLDINGS, SAS, Paris (FR)
PCT Filed Dec. 10, 2020, PCT No. PCT/EP2020/085446
§ 371(c)(1), (2) Date Jun. 20, 2022,
PCT Pub. No. WO2021/130025, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 19306775 (EP), filed on Dec. 26, 2019.
Prior Publication US 2022/0385917 A1, Dec. 1, 2022
Int. Cl. H04N 19/139 (2014.01); H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/139 (2014.11) [H04N 19/105 (2014.11); H04N 19/132 (2014.11); H04N 19/176 (2014.11)] 18 Claims
OG exemplary drawing
 
1. A method, comprising:
obtaining first weighted prediction parameters;
obtaining second weighted prediction parameters based on a scaled reference image histogram derived from samples of a reference image and the first weighted prediction parameters; and
responsive to a component of an image, enabling the use of the second weighted prediction parameters for predicting a block of the image based on a first histogram distortion obtained between an image histogram, derived from samples of the image, and a reference image histogram, derived from samples of the reference image, and on a second histogram distortion obtained between the image histogram and a scaled reference image histogram derived from the reference image histogram and the second weighted prediction parameters.