maybe you can still try with SIFT & homography, even if it is only to get a transformation, so you can “map” the corresponding regions in your images onto each other, and go on with a simple absdiff(), then refine, what you found there
maybe you can still try with SIFT & homography, even if it is only to get a transformation, so you can “map” the corresponding regions in your images onto each other, and go on with a simple absdiff(), then refine, what you found there