public function initialize(&$controller, $settings = array())
 {
     if (empty($settings['allow'])) {
         $settings['allow'] = 'images';
     } else {
         $this->type = 'images';
     }
     parent::initialize($controller, $settings);
     if (!empty($settings['scale'])) {
         $this->resizeScale = $settings['scale'];
     }
     if (!empty($settings['thumbScale'])) {
         $this->thumbnailScale = $settings['thumbScale'];
     }
 }