US 12,231,648 B2
Methods, architectures, apparatuses and systems directed to improved linear model estimation for template based video coding
Saurav Bandyopadhyay, San Diego, CA (US); Xiaoyu Xiu, San Diego, CA (US); and Yuwen He, San Diego, CA (US)
Assigned to InterDigital VC Holdings, Inc., Wilmington, DE (US)
Filed by InterDigital VC Holdings, Inc., Wilmington, DE (US)
Filed on Jan. 19, 2024, as Appl. No. 18/417,274.
Application 18/417,274 is a continuation of application No. 17/415,176, granted, now 11,909,977, previously published as PCT/US2019/068038, filed on Dec. 20, 2019.
Claims priority of provisional application 62/784,341, filed on Dec. 21, 2018.
Prior Publication US 2024/0171748 A1, May 23, 2024
Int. Cl. H04N 19/132 (2014.01); H04N 19/105 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01)
CPC H04N 19/132 (2014.11) [H04N 19/105 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method for encoding video data by an encoder, the method comprising:
coding a video block of the video data using a linear model of a template-based video coding technique, the coding comprises:
using a single look up table to determine a first parameter of the linear model, the single look up table including values for determining least significant bits, wherein the determining of the first parameter of the linear model comprises:
determining minimum and maximum values derived from luma samples neighboring the video block;
determining minimum and maximum values derived from chroma samples neighboring the video block; and
computing the first parameter of the linear model as a function of (i) the minimum and the maximum values of the chroma samples and (ii) a reciprocal of a difference between the minimum and the maximum values of the luma samples, wherein the reciprocal is derived from the single look up table, and
predicting samples of the video block based on the linear model.