US 12,170,759 B2
Chroma from luma prediction model selection
Young-Yoon Lee, McLean, VA (US); and Tae Meon Bae, McLean, VA (US)
Assigned to Ofinno, LLC, Reston, VA (US)
Filed by Ofinno, LLC, Reston, VA (US)
Filed on Aug. 8, 2022, as Appl. No. 17/882,813.
Claims priority of provisional application 63/231,084, filed on Aug. 9, 2021.
Prior Publication US 2023/0041999 A1, Feb. 9, 2023
Int. Cl. H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/196 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/196 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
determining reference signals of a chroma block;
determining a decision rule from a bitstream, wherein the decision rule comprises comparing a coding parameter with a threshold;
determining, based on the decision rule, a chroma prediction model among one or more linear models and one or more non-linear models, wherein determining the chroma prediction model comprises:
determining, based on the decision rule, one or more candidate models from the one or more linear models and the one or more non-linear models; and
determining the chroma prediction model from the one or more candidate models;
generating a prediction of the chroma block based on the reference signals of the chroma block and the chroma prediction model; and
determining a reconstruction of the chroma block based on the prediction of the chroma block and a decoded residual of the chroma block.