public void RGBToYCbCr420(NPPImage_8uC1 dst0, NPPImage_8uC1 dst1, NPPImage_8uC1 dst2)
{
CUdeviceptr[] array = new CUdeviceptr[] { dst0.DevicePointerRoi, dst1.DevicePointerRoi, dst2.DevicePointerRoi };
int[] arrayStep = new int[] { dst0.Pitch, dst1.Pitch, dst2.Pitch };
status = NPPNativeMethods.NPPi.RGBToYCbCr.nppiRGBToYCbCr420_8u_C3P3R(_devPtrRoi, _pitch, array, arrayStep, _sizeRoi);
Debug.WriteLine(String.Format("{0:G}, {1}: {2}", DateTime.Now, "nppiRGBToYCbCr420_8u_C3P3R", status));
NPPException.CheckNppStatus(status, this);
}