ProcessBuilder builder = new ProcessBuilder("compare", "-metric", "AE", "-fuzz", "5%", "D:\pic1.png", "D:\pic2.png", "D:\result.png");
        Process process = builder.start();

ProcessBuilder builder = new ProcessBuilder("convert", "d:\pic.png", "-crop", "1004х768+0+0",  "d:\croped.png");
        Process process = builder.start();