pnmgamma man page on OSF1

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pnmgamma(1)							   pnmgamma(1)

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 pro‐
       duces 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.

				12 January 1991			   pnmgamma(1)
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