How does a computer define the area of interest in a photo when it's so subjective to a human? If there's a full frontal shot of a pretty girl do you crop the face, boobs & torso, pussy, feet?...
That one is probably in the too hard basket, for a few more years anyway... unless you just want faces.
I do have a program that can recognise skin tones and crop around that, but it's for my sites only.
