bartorch.psnr

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bartorch.psnr#

bartorch.psnr(reference, input)#

Peak signal-to-noise ratio of the magnitudes in decibels, averaged over images (--psnr).

Per image over (z, y, x): 20 log10 max|reference| - 10 log10 mean (|input| - |reference|)², magnitudes being the root sum of squares over the coil axis; then the mean over every other axis (nn/losses.c:54-100).

Parameters:

  • reference (torch.Tensor) – C order (..., coils, z, y, x); a plain (y, x) image serves.

  • input (torch.Tensor) – C order (..., coils, z, y, x); a plain (y, x) image serves.

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