Match altered image to its original

[Krikor]

I was looking for answers to another question (Luminosity Match), and ended up bumping into Rob A's Histogram_Match.scm script.

I just did a few tests with this script (it's been a few minutes since I downloaded it) and I don't really know how to use it correctly yet, but the results seemed acceptable to me for the Hall Original and Hall Ghost images.

What do you think? A viable option?

http://www.silent9.com/blog/archives/162...Match.html