The dyes of common photographic three-color materials are chemically rather unstable. Restoration of faded materials by chemical processes, while possible for black-and-white photography, is not possible for color photography, because dye fading is an irreversible process. A method to reconstruct faded color materials by digital image processing is presented. The algorithms used for reconstruction are based on photographic experiments, i.e., accelerated fading tests of various photographic materials. Based on these tests, a mathematical model for the fading process can be determined. The method shows good results for color slides, prints, and motion pictures.