How to find similar places in images?

Question

Algorithms

Hello!
There are a number of black-and-white images (not grayscale), you need to find similar pieces on them, and not necessarily pixel-for-pixel, but just similar. Tell me, please, are there any ready-made solutions or where to dig?
Thank you!

Answer 1

https://code.google.com/p/sikuli-api/downloads/list
Sikuli api is perhaps the easiest option. (lower yarchik)
Actually, it can search for a picture in a picture. In this case, you can set the degree of similarity in percent. Very easy to use.

Answer 2

This is where pixel2pixel will be the easiest :) For everything else, the subject of computer vision is being studied :)