getPSNR_CUDA       19 samples/cpp/tutorial_code/gpu/gpu-basics-similarity/gpu-basics-similarity.cpp double getPSNR_CUDA(const Mat& I1, const Mat& I2);  // Basic CUDA versions
getPSNR_CUDA      101 samples/cpp/tutorial_code/gpu/gpu-basics-similarity/gpu-basics-similarity.cpp         result = getPSNR_CUDA(I1,I2);