Attached Link: http://www.thepixelfarm.co.uk/product.php?productId=PFTrack

If you can find a ref. video of the model turning his/her head even slightly(may work with photo's also) PfTrack can accurately compute the position of user defined points in 3d space, hell you can even build animated textured geometry right on the video and export it in several formats to use in other programs. This software is incredible, not cheap by any means though, but theres a free trial . :)

 

http://vimeo.com/57939161

Y'all have a great day.