How to find if there are any differences between two images using Python?

Question

Possible Duplicate:
How can I quantify difference between two images?

I've used Imagick's convert function to convert a tif-image to png. Using imagick you can compute a new image based on the two to see any difference. Any difference will show up as red dots on a grey/transparent version of the original image. That's all nice and well, but I'd like to somehow compute if there are any difference using python. A simple function taking to images as parameters and then just return true/false if the content of the images are the same or not.

Any clues?

Answer 1

Sorry. This question has been answered several times:

http://stackoverflow.com/questions/189943/how-can-i-quantify-difference-between-two-images

I`ll do a better search before posting the next time :-)