mostly I just use Photoshop and its options to reduce some specific color and change contrast and so on.
Don's link is also very useful.
but if you want to use a program on your computer you can try this:
http://www.lcs-chemie.de/poststfa.htm (German product)
under "Bildanalyse" in the program you can choose a file (better not to big) and give the program the information on the cancellation color. Also other tools are helpful like the color filters.