Facial shape extraction from images

What suitable algorithms can be applied for extracting shape of the face for face recognition, I thought of using edge detection but they provided varying shapes.

Answer 1

[Image Analyst]

You can go here to find an algorithm: http://iris.usc.edu/Vision-Notes/bibliography/contentspeople.html#Face%20Recognition,%20Detection,%20Tracking,%20Gesture%20Recognition,%20Fingerprints,%20Biometrics. There are so many face recognition algorithms out there that we can't choose one for you.