pnmgamma(1)pnmgamma(1)NAMEpnmgamma - perform gamma correction on a portable anymap
SYNOPSISpnmgamma value [pnmfile]
pnmgamma redvalue greenvalue bluevalue [pnmfile]
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
Copyright (C) 1991 by Bill Davidson and Jef Poskanzer.
12 January 1991 pnmgamma(1)