Digital extraction color restoration method for painting art

The invention discloses a digital extraction color restoration method for painting art, belongs to the technical field of artwork copying, and aims to solve the problem that painting artworks are easyto fade and distort due to external factors such as time and illumination. The method comprises the following steps: 1, selecting a target image and a standard color table, measuring a color value ofthe target image, and carrying out color copying by adopting a printing material which is the same as the original target image to obtain a color copy; 2, irradiating the color copy with standard UVlight to simulate a fading environment; 3, measuring tristimulus values, L.a.b values and spectral reflectance of IT8.7/4 and paper by using a color measuring instrument at set intervals; and 4, performing curve fitting on the numerical value obtained in the step 3 by utilizing Matlab program software. According to the digital extraction color restoration method for the painting art, the fading process of a photo-induced fa