Need help and suggestions for image comparison method

[SoftwareBug2.0]

Originally Posted by Joe Ross

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

I think what he's saying is that to compare two images that are offset he's just comparing the region of overlap. So if the upper left pixel is black in the first image and the lower right pixel is black in the second image, one of the combinations he would try would consist of only those two pixels. Then, since they're both black there would be a 100% match.