public void Sqr(int nScaleFactor)
{
status = NPPNativeMethods.NPPi.Sqr.nppiSqr_8u_C3IRSfs(_devPtrRoi, _pitch, _sizeRoi, nScaleFactor);
Debug.WriteLine(String.Format("{0:G}, {1}: {2}", DateTime.Now, "nppiSqr_8u_C3IRSfs", status));
NPPException.CheckNppStatus(status, this);
}