extracting face part in a image

help me out, how to extract face part in a image having so many faces and how to arrange those face in a order...

Answer 1

[Image Analyst]

It's in the Computer Vision System Toolbox

[Chandra Shekhar]

thank you sir..

Answer 2

[Thomas]

This might help:

http://www.mathworks.com/matlabcentral/fileexchange/11073

another one her: http://www.mathworks.com/matlabcentral/fileexchange/19912

or if you have the Computer vision Toolbox : http://www.mathworks.com/products/computer-vision/description4.html

[Chandra Shekhar]

thank you sir.. but i need algorithm how to choose boundary of the face and how to get each face individually..