pgmdeshadow
attempts to compensate for uneven lighting or shadows in scanned
TLDR
Remove uneven lighting from scan
$ pgmdeshadow [input.pgm] > [output.pgm]
SYNOPSIS
pgmdeshadow [file]
DESCRIPTION
pgmdeshadow attempts to compensate for uneven lighting or shadows in scanned images by analyzing and normalizing local brightness. Part of Netpbm toolkit.
