pnmpsnr
Calculate peak signal-to-noise ratio between images
TLDR
Compare two images (PSNR)
$ pnmpsnr [image1.pnm] [image2.pnm]
Calculate peak signal-to-noise ratio$ pnmpsnr [original.pnm] [compressed.pnm]
SYNOPSIS
pnmpsnr [file1] [file2]
DESCRIPTION
pnmpsnr calculates the Peak Signal-to-Noise Ratio (PSNR) between two PNM images. PSNR is a standard metric for measuring image quality, commonly used to evaluate the fidelity of compressed or processed images against the original.
Higher PSNR values (measured in decibels) indicate greater similarity between the images. Typical values range from 30-50 dB for acceptable quality. Both images must have the same dimensions. Part of the Netpbm toolkit.
PARAMETERS
FILE1
First input image (reference).FILE2
Second input image (comparison).
CAVEATS
Images must be same dimensions. Part of Netpbm suite.
HISTORY
pnmpsnr was created as part of Netpbm for image quality comparison.