hi there, i need to compare 2 images with each other and give a score how similar they look, like if you take a pic of an car and compare it with another carpicture taken from the same angle it shoulkd output a score like 90-100 (from 100). this programm should compare the cars by shapes, not by colours. the application should also work with a website, so i need some kind of interface for php. is this somehow possible, someone maybe with an example here...?