Image matching

Hi!

I would like to write a script to handle an application, but the buttons are
graphical, and autoit window info does not provide any useful informations.
I have the picture of the button into the directory where the software is
installed, so that the only way I see, is to perform some kind of "image
matching" .

The question is : How ?

If you have an example script, it could be fine :-)

Bye


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