e/resample an image with high precision

<DT><B><a href="pnmscale.html">pnmscale</a>      </B>
<DD>scale an image with high precision - obsolete

<DT><B><a href="pnmscalefixed.html">pnmscalefixed</a> </B>
<DD>scale an image quickly with low precision

<DT><B><a href="pnmenlarge.html">pnmenlarge</a>    </B>
<DD>enlarge an image N times

<DT><B><a href="pamperspective.html">pamperspective</a>    </B>
<DD>Change perspective distortion in an image

<DT><B><a href="ppmdither.html">ppmdither</a>     </B>
<DD>orde