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pnminvert
Langue: en
Version: 08 August 1989 (fedora - 16/08/07)
Section: 1 (Commandes utilisateur)
NAME
pnminvert - invert a PNM image
SYNOPSIS
pnminvert
[pnmfile]
DESCRIPTION
This program is part of Netpbm(1).
pnminvert reads a PNM image as input, inverts it black for white, and produces a PNM image as output.
If the image is grayscale, pnminvert replaces a pixel with one of complementary brightness, i.e. if the original pixel has gamma-adjusted gray value G, the output pixel has gray value maxval - G.
If the image is color, pnminvert inverts each individual RGB component the same as for a grayscale image.
SEE ALSO
pnm(1)AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre