imgutils.metrics.psnr_

Overview:

Implementation of PSNR metrics.

psnr

imgutils.metrics.psnr_.psnr(img1, img2) → float[source]
Overview:

Psnr difference between images.

Parameters:

  • img1 – First image.

  • img2 – Second image.

Returns:

Psnr difference of these two images.

Example:

Here are some images for example

../../_images/psnr.plot.py.svg
>>> from imgutils.metrics import psnr
>>>
>>> psnr('psnr/origin.jpg', 'psnr/origin.jpg')  # same image
inf
>>> psnr('psnr/origin.jpg', 'psnr/gaussian_20.dat.jpg')
15.058228614646987
>>> psnr('psnr/origin.jpg', 'psnr/gaussian_3.dat.jpg')
27.65611098737784
>>> psnr('psnr/origin.jpg', 'psnr/lq.dat.jpg')
25.29589659377844