public void ColorToGray(NPPImage_8uC1 dest, float[] aCoeffs) { status = NPPNativeMethods.NPPi.ColorToGray.nppiColorToGray_8u_C3C1R(_devPtrRoi, _pitch, dest.DevicePointerRoi, dest.Pitch, _sizeRoi, aCoeffs); Debug.WriteLine(String.Format("{0:G}, {1}: {2}", DateTime.Now, "nppiColorToGray_8u_C3C1R", status)); NPPException.CheckNppStatus(status, this); }