Image correlation / matching / alignment

Hello everybody,

I have 2 similar images, but taken with 2 different cameras, so the intensity may vary, also small displacement may be presented.

Could you please suggest me, what are the best functions or algorithms can be used to match/correlate/ align 2 similar images with different intensity and small displacement.

I've heard about following functions: imregister() and imregtform(). Are the they suitable to do what I want, and is there anything else I need to know?

Best Regards, Ivan

Answer 1

[Image Analyst]

Yes. Give them a try.

[Ivan Shorokhov]

@ Image Analyst, Hehe, great answer. But would you suggest anything else?

[Image Analyst]

For simple translations you can use normxcorr2() - demo attached. But it's not as good as the two you mentioned for cases where there is more complicated movement.

[Ivan Shorokhov]

Thanks a lot, I'll try it out.

Answer 2

[Alex Taylor]

I'd also check out imregcorr for the case of simple transformations up through similarly transformations.

[Ivan Shorokhov]

Thank you!