Here is an example of the kind of digital "restoration" I do with fine art images of paintings that are in poor condition. These are excerpts from the painting "The Mischievous Tale" by German painter Edmund Adler. The original (top) was obtained from Guarisco Gallerey at www.guariscogallery.com/. As you can see it was quite scummy looking in the lower left quadrant. The edited image (bottom) is the one I use in my wallpaper and screensaver program.