US 11,948,335 B2
Method for image processing and apparatus for implementing the same
Thomas Guionnet, Rennes (FR); and Sébastien Herbreteau, Rennes (FR)
Assigned to ATEME, Velizy Villacoublay (FR)
Filed by ATEME, Velizy Villacoublay (FR)
Filed on May 4, 2021, as Appl. No. 17/307,419.
Claims priority of application No. 20305435 (EP), filed on May 4, 2020.
Prior Publication US 2021/0343045 A1, Nov. 4, 2021
Int. Cl. H04N 19/119 (2014.01); G06T 5/00 (2006.01); G06T 9/00 (2006.01); H04N 19/142 (2014.01); H04N 19/172 (2014.01); H04N 19/98 (2014.01)
CPC G06T 9/00 (2013.01) [G06T 5/009 (2013.01); H04N 19/119 (2014.11); H04N 19/142 (2014.11); H04N 19/172 (2014.11); H04N 19/98 (2014.11); G06T 2207/20204 (2013.01); G06T 2207/20208 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of processing an image of a video sequence including a plurality of images, the video sequence being divided into a sequence of consecutive subsets each including one or more consecutive images of the video sequence, the method comprising:
determining, among the consecutive subsets, a current subset that comprises the image;
upon determining that the image is a first image of the current subset to be processed, determining an analysis window corresponding to the current subset, the analysis window comprising
a plurality of consecutive images of the video sequence, and
at least one image of the current subset; and
generating processing results for the image by performing a processing on the images of the analysis window,
wherein the processing comprises determining estimates of parameters of an auto-regressive (AR) parametric model of noise contained in the images of the analysis window, according to which a current noise pixel is computed as a combination of a linear combination of P previous noise pixels in a causal neighborhood of the current noise pixel weighted by respective AR model linear combination parameters with a generated noise sample corresponding to an additive Gaussian noise of AR model variance parameter.