RgbToR            501 samples/gpu/opticalflow_nvidia_api.cpp     ncvAssertReturnNcvStat (CopyData<RgbToR> (firstFrame, h_r));
RgbToR            509 samples/gpu/opticalflow_nvidia_api.cpp     ncvAssertReturnNcvStat (CopyData<RgbToR> (lastFrame, h_r));