1. A method of conversion of a saturated image into a non-saturated image comprising: segmenting said saturated image in regions of pixels the colors of which have at least one color channel in a linear RGB color space which is saturated, and, for each of these saturated regions (s i ; r i ), wherein i is a positive integer, among the different color channels providing color information in said linear RGB color space for the pixels of said region (s i ; r i ) selecting at least one color channel (c ref , c′ ref,ri ) that is not saturated over pixels of said region (s i ; r i ), for each pixel of said region, replacing the color information of said pixel that is provided by the at least one saturated color channel of said region (s 1 ; r i ) by a reconstructed non-saturated color information, wherein said reconstructed non-saturated color information is a sum of the color information provided by said at least one saturated color channel of said region for said pixel and of a difference between the color information provided by the selected at least one non-saturated color channel (c ref , c′ ref,ri ) for said pixel and a baseline color value (ρ si ; ρ′ si ) computed for the region (s i ; r i ) of said pixel, thus providing said converted non-saturated image.