What are the techniques for comparing two images?

Hi I want to compare two images in between original image and stego image in matlab. I have used PSNR and MSE. Can anyone suggest me some other techniques for comparison. Can any give me the source code for the same in matlab.

Thank u

Answer 1

[KSSV]

doc imshowpair

doc imabsdiff

doc corr2

[Sanjeeb Behera]

Thank for reply. But i can't understand. How can i use it. Can u suggest the matlab code for above comparison techniques

[KSSV]

Read the documentation......it has with examples which is very easy to understand.