Questions tagged [floating-point]

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PSNR calculation with float arrays

The PSNR definition provided by wikipedia is often quoted in discussions regarding PSNR and other similarity metrics. Essentially the PSNR calculation has two components: the mean squared error and ...
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Why does spectral accuracy of laplacian decrease with sampling size?

We know that for any real-valued function $f(x,y,z)$ whose Fourier transform is $\mathcal F[f]$, its laplacian can be computed from a spectral interpolant as follows. $$ \Delta f(x,y,z) \simeq \sum_{...