In a method for processing digital color images derived from photographic film, the method employing color reproduction functions generated by normalizing random samples of color values from different colors, sampling of color values from noisy areas of an image, or scanner noise can distort the randomness...http://www.google.fr/patents/US4677465?utm_source=gb-gplus-shareBrevet US4677465 - Digital color image processing method with shape correction of histograms used to produce color reproduction functions
Digital color image processing method with shape correction of histograms ...
