pnmgamma

NAME
SYNOPSIS
DESCRIPTION
SEE ALSO
AUTHOR

NAME

pnmgamma - perform gamma correction on a portable anymap

SYNOPSIS

pnmgamma value [pnmfile]
pnmgamma
redvalue greenvalue bluevalue [pnmfile]

DESCRIPTION

Reads a portable anymap as input. Performs gamma correction, and produces a portable anymap as output.

The arguments specify what gamma value(s) to use. A value of 1.0 leaves the image alone, less than one darkens it, and greater than one lightens it.

SEE ALSO

pnm(5)

AUTHOR

Copyright (C) 1991 by Bill Davidson and Jef Poskanzer.