Color Restoration of Scanned Book Images for Various Background Colors and Specular Reflections

In this paper, we discuss the method to restore color of a scanned book image taken by an image scanner. Especially, we show the color restoration methods in cases of the achromatic or chromatic background color and the specular book surface. In our proposed method, the background color is extracted as the one with the highest frequency, and the color in the book image is restored by using its pro- files. The specular reflection can be restored by using the saturation profile of the background color or the mathematical model of specular component profile. The color restoration experiments are performed by using various background color images, and we confirm the effec- tiveness of the proposed method.