I can't view your image on that web site. And I couldn't download it either. That has to be one of the mose annoying file sharing sites I've seen. Why not use snag.gy or tinypic.com or some site where we can immediately see the image and not have to do multiple clicks and download some executable?
In general I don't see that algorithm as being effective. I might try to do skin color detection and then look where the skin is wide (the face) then gets narrow for a stretch (in the neck) and then either vanishes (wearing a shirt) or widens way out again (no shirt covering the shoulders). But it depends on how reproducible and alike your photos are and what kind of hair and clothing you expect to be present on the subjects.
