//1. core\classes\image add this code:
public static function identify(){
            return static::instance()->identify();
        }

//2. core\classes\image\imagemagick add this code:
public function identify($parameter=null){
            $imagemagick_data = $this->exec('identify', $this->image_temp);
        list($full_image_path, $format, $resolution, $geometry, $depth, $class, $file_size, $info1, $info2) = explode(' ', $imagemagick_data[0]);
        list($width, $height) = explode('x',$resolution);
        $parameter = strtolower($parameter);
        switch ($parameter) {
            case 'image_path': $data = $full_image_path;
                break;
            case 'format':     $data = $format;
                break;
            case 'resolution': $data = $resolution;
                break;
            case 'width':      $data = $width;
                break;
            case 'height':     $data = $height;
                break;
            case 'geometry':   $data = $geometry;
                break;
            case 'depth':      $data = $depth;
                break;
            case 'class':      $data = $class;
                break;
            case 'full_data':  $data = $imagemagick_data[0];
                break;
            case 'file_size':  $data = $file_size;
            default :          $data = $resolution;
                break;
        }
        return $data;
        }
  

//Example:
//Image::load('1.jpg')->identify(); by default returns resolution

//Image::load('1.jpg')->identify('[b]width[/b]'); returns width of image

//Image::load('1.jpg')->identify('[b]format[/b]'); returns format of image, in that case it is 'JPG'

//Image::load('1.jpg')->identify('[b]file_size[/b]'); returns file size