A method for reconstructing an extended color gamut digital image from a
limited color gamut digital image includes transforming the limited color
gamut digital image in the particular limited color gamut color space to
a reference color space forming a limited color gamut digital image in a
reference color space; providing a modified inverse color adjustment
function which, when such function operates on the limited color gamut
digital image in the reference color space, produces the reconstructed
extended color gamut digital image having reduced highlight color
saturation for highlight color values when compared with corresponding
color values of the initial extended color gamut image; and operating on
the limited color gamut digital image in the reference color space with
the modified inverse color adjustment function to form the reconstructed
extended color gamut digital image having reduced levels of color
contouring and quantization artifacts.