Date: Dec 22, 2012 7:53 AM
Author: grei
Subject: Re: how to calculate the sharpness of the nose ?

What do you  mean by "sharpness"?  In your title you ask about the sharpness of the NOSE and I would be inclined to say "length divided by width".  But then in the text you say "sharpness of the 3D human face" which makes me wonder if the question is not about the clarity of an image.