Automatic detection of eyes,nose and mouth in an image using inbuilt matlab functions

Uses vision toolbox and images taken from AFW test data.

AFW testdata availble at http://www.ics.uci.edu/~xzhu/face/
Even though it is good practice to check whether the bounding box after detecting face,eyes,mouth,nose is not empty, i have not checked. I want to keep the code simple and has the basic steps and i feel this would be easy for a beginner to trace the file.
The performance of the above code depends upon the viola jones face,eyes,nose and mouth detectors.
The code works fine for people with glasses and tilted faces. I didn't chek the code for closed eyes.