/a>       </B>
<DD>perform one or more flip operations on an image

<DT><B><a href="pamstretch.html">pamstretch</a></B>
<DD>scale up an image by inserting interpolated pixels

<DT><B><a href="pamstretch.html">pamstretch-gen</a></B>
<DD>scale by non-integer values using pamstretch and pamscale

<DT><B><a href="pnminvert.html">pnminvert</a>     </B>
<DD>invert an image

<DT><B><a href="pnmgamma.html">pnmgamma</a>      </B>
<DD>perform gamma correction on an image

<DT><B><a href="pnmhisteq.html">pnmhisteq</a>