Bleaching is a serious threat to all color films. Since the bleaching phenomenon is irreversible, photochemical restoration of faded prints is not possible. Digital film restoration is therefore indispensable.We present in this paper some advances in automating the color restoration process, especially with regard to the selection of the points of interest that allow the correction of the whole image. This selection is based on a principal components analysis of the image. We present also some methods to recover the hue of some parts of the image
Majed Chambah, Bernard Besserer, Pierre Courtellemont, "Approach to Automate Digital Restoration of Faded Color Films" in Proc. IS&T CGIV 2002 First European Conf. on Colour in Graphics, Imaging, and Vision, 2002, pp 613 - 618, https://doi.org/10.2352/CGIV.2002.1.1.art00128