private bool OpenDetector()
        {
            int status = AiliaDetector.ailiaCreateDetector(ref ailia_detector, ailia, format, channel, range, algorithm, category_n, flag);

            if (status != Ailia.AILIA_STATUS_SUCCESS)
            {
                if (logging)
                {
                    Debug.Log("ailiaCreateDetector failed " + status);
                }
                Close();
                return(false);
            }
            return(true);
        }