Need help and suggestions for image comparison method

[Joe Ross]

Originally Posted by Maxwell777

When you divide the score by the area, I think (as in it's possible there's a bug elsewhere and I lied to you) the program then becomes focused on reducing the area to achieve a better score. I also tried reducing the area's influence (Score = matches / Area/2 ) of the total score, which didn't help.

I'm confused. Why do you have images of different resolutions being scored and compared to each other?