No there's not an htaccess file in that directory the script is in or the directory the image is in. Below is the url of the image and the script. I would post the url of the script but each time somebody clicked onto it it would produce a core file.
http://sonny175.heliohost.org/images/Back.jpg
<?php
$image = new Imagick("../images/Back.jpg");
$image->charcoalImage(1, 2);
header("Content-type: image/jpeg");
echo $image;
?>