Compare Two Images Matlab Code

This program calculate the similarity index of two images and tells user in terms of percentage that how much the two images are similar and where the difference lies. The images of the person should be of same posture/angle. This method is still in its development phase and yet more work has to be done on it. It is best for learning how to compare two images that are quite similar to each other. A very interesting application of this code is that a person can check its face before and after beauty/acne treatment to visualize how much the treatment is effective and how his face is improving.