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<H1>fstopgm</H1>
Section: User Commands (1)<BR>Updated: 06 April 89<BR><A HREF="#index">Index</A>
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
fstopgm - convert a Usenix FaceSaver(tm) file into a portable graymap
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<H2>SYNOPSIS</H2>
<B>fstopgm</B>
[<I>fsfile</I>]
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<H2>DESCRIPTION</H2>
Reads a Usenix FaceSaver(tm) file as input.
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Produces a portable graymap as output.
<P>
FaceSaver(tm) files sometimes have rectangular pixels.
While
<I>fstopgm</I>
won't re-scale them into square pixels for you,
it will give you the precise
<I>pnmscale</I>
command that will do the job.
Because of this, reading a FaceSaver(tm) image is a two-step process.
First you do:
<PRE>
fstopgm &gt; /dev/null
</PRE>
This will tell you whether you need to use
<I>pnmscale.</I>
Then use one of the following pipelines:
<PRE>
fstopgm | pgmnorm
fstopgm | pnmscale -whatever | pgmnorm
</PRE>
To go to PBM, you want something more like one of these:
<PRE>
fstopgm | pnmenlarge 3 | pgmnorm | pgmtopbm
fstopgm | pnmenlarge 3 | pnmscale &lt;whatever&gt; | pgmnorm | pgmtopbm
</PRE>
You want to enlarge when going to a bitmap because otherwise you lose
information; but enlarging by more than 3 does not look good.
<P>
FaceSaver is a registered trademark of Metron Computerware Ltd. of
Oakland, CA.
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<H2>SEE ALSO</H2>
<A HREF="/cgi-bin/man/man2html?1+pgmtofs">pgmtofs</A>(1), <A HREF="/cgi-bin/man/man2html?5+pgm">pgm</A>(5), <A HREF="/cgi-bin/man/man2html?1+pgmnorm">pgmnorm</A>(1), <A HREF="/cgi-bin/man/man2html?1+pnmenlarge">pnmenlarge</A>(1), <A HREF="/cgi-bin/man/man2html?1+pnmscale">pnmscale</A>(1), <A HREF="/cgi-bin/man/man2html?1+pgmtopbm">pgmtopbm</A>(1)
<A NAME="lbAF">&nbsp;</A>
<H2>AUTHOR</H2>
Copyright (C) 1989 by Jef Poskanzer.
<P>
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT id="1"><A HREF="#lbAB">NAME</A><DD>
<DT id="2"><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT id="3"><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT id="4"><A HREF="#lbAE">SEE ALSO</A><DD>
<DT id="5"><A HREF="#lbAF">AUTHOR</A><DD>
</DL>
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