>|<B>-srgbramp</B>]

<I>redgamma greengamma bluegamma</I>

[<I>pnmfile</I>]

<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>

<p>This program is part of <a href="index.html">Netpbm</a>.

<p><b>Pnmgamma</b> performs gamma correction on pseudo-PNM images.

<P>The PPM format specification specifies that certain sample values
in a file represent certain light intensities in an image.  In
particular, they specify that the sample values are directly
proportional to gamma-corrected intensity values.  The gamma
corr