difference – php скрипт высчитывающий разницу между изображениями

use Undemanding\\Difference\\Image;
use Undemanding\\Difference\\Method\\EuclideanDistance;

$image1 = new Image("/path/to/image1.png");
$image2 = new Image("/path/to/image2.png");

$difference = $image1->difference($image2, new EuclideanDistance());

$boundary = $difference->boundary(); // ? ["left" => ..., "top" => ...]
$percentage = $difference->percentage(); // ? 14.03...

https://github.com/undemanding/difference