Incorrect result of image subtraction

Question

I wanted to subtract two images pixel by pixel to check how much they are similar. Images have the same size one is little darker and beside brightness they don\'t differ. B

Answer 1

I found this which does what you want. It does seem to do the same thing and it may be more "correct" than your code. I assume it's possible to extract the source code.

http://tutorial.simplecv.org/en/latest/examples/image-math.html

/Fredrik Wahlgren