pgmhist
displays a grayscale histogram of a PGM image
TLDR
Show grayscale histogram
$ pgmhist [input.pgm]
Show median value$ pgmhist -median [input.pgm]
SYNOPSIS
pgmhist [options] [file]
DESCRIPTION
pgmhist displays a grayscale histogram of a PGM image. Shows distribution of gray values. Part of Netpbm toolkit for image analysis.
PARAMETERS
-median
Show median gray value.-quartile
Show quartile values.