How to compare two parts of same image?

I am subplotting 3 images back to back which are a part of each other with a minor difference shifted (not rotated) in certain way. I want the user to choose the most appropriate one.I read abt image registration but have no clue how to use it. Please help.

Answer 1

[Image Analyst]

Try imregister() and imshowpair(). There are examples in the help to help you.