File: //usr/share/doc/netpbm-10.35.58/userguide/pbmtoascii.html
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<H1>pbmtoascii</H1>
Updated: 11 August 2002
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<A HREF="#index">Table Of Contents</A>
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<H2>NAME</H2>
pbmtoascii - convert a PBM image to ASCII graphics
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<H2>SYNOPSIS</H2>
<B>pbmtoascii</B>
[<B>-1x2</B>|<B>-2x4</B>]
[<I>pbmfile</I>]
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<H2>DESCRIPTION</H2>
<p>This program is part of <a href="index.html">Netpbm</a>.
<b>pbmtoascii</b> reads a PBM image as input and produces a somewhat
crude ASCII graphic image as output.
<P>To convert back, use <A HREF="asciitopgm.html">asciitopgm</A>.
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<H2>OPTIONS</H2>
<p>The <B>-1x2</B> and <B>-2x4</B> options give you two alternate ways for
the pixels to get mapped to characters. With <B>1x2</B>, the default,
each character represents a group of 1 pixel across by 2 pixels down.
With <B>-2x4</B>, each character represents 2 pixels across by 4
pixels down. With the 1x2 mode you can see the individual pixels, so
it's useful for previewing small images on a non-graphics terminal.
The 2x4 mode lets you display larger images on a standard 80-column
display, but it obscures pixel-level details. 2x4 mode is also good
for displaying PGM images:
<pre>
pamscale -width 158 | pnmnorm | pamditherbw -threshold
</pre>
should give good results.
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<H2>SEE ALSO</H2>
<A HREF="asciitopgm.html">asciitopgm</A>
<A HREF="pbm.html">pbm</A>
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<H2>AUTHOR</H2>
Copyright (C) 1988, 1992 by Jef Poskanzer.
<HR>
<A NAME="index"> </A>
<H2>Table Of Contents</H2>
<UL>
<LI><A HREF="#lbAB">NAME</A>
<LI><A HREF="#lbAC">SYNOPSIS</A>
<LI><A HREF="#lbAD">DESCRIPTION</A>
<LI><A HREF="#lbAE">OPTIONS</A>
<LI><A HREF="#lbAF">SEE ALSO</A>
<LI><A HREF="#lbAG">AUTHOR</A>
</UL>
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