potok/opencv
1
0
Fork 0
mirror of https://github.com/opencv/opencv.git synced 2026-07-25 21:33:04 +04:00
Code Packages Releases Wiki Activity

Updated Tutorial PSNR for identical images

Browse Source
This commit is contained in:
D00E
2025-10-02 00:03:28 +01:00
parent e9bded6ff3
commit acc76304d5
3 changed files with 24 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files
samples/cpp/tutorial_code/gpu/gpu-basics-similarity/gpu-basics-similarity.cpp
+21 -24
View File
@@ -181,14 +181,13 @@ double getPSNR(const Mat& I1, const Mat& I2)
double sse = s.val[0] + s.val[1] + s.val[2]; // sum channels
if( sse <= 1e-10) // for small values return zero
return 0;
else
{
double mse =sse /(double)(I1.channels() * I1.total());
double psnr = 10.0*log10((255*255)/mse);
return psnr;
}
double mse = sse /(double)(I1.channels() * I1.total());
// For very small SSE, add epsilon to approximate infinite PSNR (~361 dB)
if( sse <= 1e-10) mse+= DBL_EPSILON;
double psnr = 10.0*log10((255*255)/mse);
return psnr;
}
//! [getpsnr]
@@ -206,14 +205,13 @@ double getPSNR_CUDA_optimized(const Mat& I1, const Mat& I2, BufferPSNR& b)
double sse = cuda::sum(b.gs, b.buf)[0];
if( sse <= 1e-10) // for small values return zero
return 0;
else
{
double mse = sse /(double)(I1.channels() * I1.total());
double psnr = 10.0*log10((255*255)/mse);
return psnr;
}
double mse = sse /(double)(I1.channels() * I1.total());
// For very small SSE, add epsilon to approximate infinite PSNR (~361 dB)
if (sse <= 1e-10) mse += DBL_EPSILON;
double psnr = 10.0*log10((255*255)/mse);
return psnr;
}
//! [getpsnropt]
@@ -234,14 +232,13 @@ double getPSNR_CUDA(const Mat& I1, const Mat& I2)
Scalar s = cuda::sum(gs);
double sse = s.val[0] + s.val[1] + s.val[2];
if( sse <= 1e-10) // for small values return zero
return 0;
else
{
double mse =sse /(double)(gI1.channels() * I1.total());
double psnr = 10.0*log10((255*255)/mse);
return psnr;
}
double mse = sse /(double)(gI1.channels() * I1.total());
// For very small SSE, add epsilon to approximate infinite PSNR (~361 dB)
if( sse <= 1e-10) mse+= DBL_EPSILON;
double psnr = 10.0*log10((255*255)/mse);
return psnr;
}
//! [getpsnrcuda]