1. Face in action (fia) face video database, amp, cmu. http://amp.ece./cmu.edu/projects/FIADataCollection/.
2. Feret face database. http://www.itl.nist.gov/iad/humanid/colorferet/.
3. Orl face database. AT&T Laboratories, Cambridge, U.K. http://www.uk.research.att.com:pub/data/att_faces.zip.
4. Yale face database. http://cvc.yale.edu/projects/yalefaces/yalefaces.html.
5. E. Bagherian and R. W. O. Rahmat. Facial feature extraction for face recognition: a review. Information Technology, International Symposium, Kuala Lumpur, Malaysia, pages 1--9, 2008.