how to extract similar part of two images

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Hi all,

I have two images as below:

I want to ask, how to extract similar part of there images.

Thanks for helping me.

=========================================================================================== Thank you very much for reply, Witek & GilLevi.

I have solved this problem in my way.

Here is my solution: - Get the end part of the first image, find its position in second image. Temporary called result A. - Get the first part of the second image, find its position in first image. Temporary called result B.

=> The region between A and B is result which i want.