getPSNR            14 samples/cpp/tutorial_code/HighGUI/video-input-psnr-ssim/video-input-psnr-ssim.cpp double getPSNR ( const Mat& I1, const Mat& I2);
getPSNR           109 samples/cpp/tutorial_code/HighGUI/video-input-psnr-ssim/video-input-psnr-ssim.cpp         psnrV = getPSNR(frameReference,frameUnderTest);
getPSNR            16 samples/cpp/tutorial_code/gpu/gpu-basics-similarity/gpu-basics-similarity.cpp double getPSNR(const Mat& I1, const Mat& I2);      // CPU versions
getPSNR            89 samples/cpp/tutorial_code/gpu/gpu-basics-similarity/gpu-basics-similarity.cpp         result = getPSNR(I1,I2);