Some free software!
Geffray S., Klutchnikoff N., Vimond M. (2016), Illumination problems in digital images. A statistical point of view, Journal of Multivariate Analysis, 150: 191-213
You will find here the R code which has been used for the analyses in this paper. You will also find there some examples of use of our code.
The hardware requirement for using our R code is having a computer with the latest version (or at least 3.3.1) of the open source R software installed on it. Moreover, your system should be at least run under windows seven or Ubuntu 10.04 or Mac OS X El Capitan 10.11.1. You will find some brief instructions for installing R on a computer running Windows, Linux or Mac OSX on this page.
Dang H.-P., Vimond M., Geffray S. (2021), Data-Driven Parameter Choice for Illumination Artifact Correction of Digital Images, IEEE Signal Processing Letters, 28: 155-159
You will find here additional results. You will also soon find there the code used in the paper.