public function saveThumb($path = '', $filename = '')
    {

        if (empty($this->filename)) return false;
        try {
            $save_name = (empty($path) ? $this->path : $path);
            $save_name = "$save_name/" . (empty($filename) ? 'th_' . $this->filename : $filename);
            $this->imagemagik->writeImage($save_name);
        } catch (\ImagickException $e) {
            throw $e;
        }

        return $this->open($save_name);
    }