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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML><HEAD><TITLE>Ppm3d User Manual</TITLE></HEAD>
<BODY>
<H1>ppm3d</H1>
Updated: 24 April 2004
<BR>
<A HREF="#index">Table Of Contents</A>
<A NAME="lbAB"> </A>
<H2>NAME</H2>
ppm3d - convert two PPM images into a red/blue 3d glasses PPM
<A NAME="lbAC"> </A>
<H2>SYNOPSIS</H2>
<B>ppm3d</B>
<I>leftppmfile</I>
<I>rightppmfile</I>
[<I>horizontal_offset</I>]
<A NAME="lbAD"> </A>
<H2>DESCRIPTION</H2>
<p>This program is part of <a href="index.html">Netpbm</a>.
<p><b>ppm3d</b> reads two PPM images as input and produces a PPM as
output, with the images overlapping by <I>horizontal_offset</I> pixels
in blue/red format. The idea is that if you look at the image with
3-D glasses (glasses that admit only red through one eye and only green
through the other), you see an image with depth. This is called a
stereogram.
<P><I>horizontal_offset</I> defaults to 30 pixels. The input PPMs
must be the same dimensions.
<p>To make a different kind of stereogram, use <b>pamstereogram</b>.
That makes a steregram that you view without special glasses, just by
letting your eyes unfocus so that each eye sees different parts of the
image.
<A NAME="lbAE"> </A>
<H2>SEE ALSO</H2>
<A HREF="pamstereogram.html">pamstereogram</A>
<A HREF="ppm.html">ppm</A>
<A NAME="lbAF"> </A>
<H2>AUTHOR</H2>
Copyright (C) 1993 by David K. Drum.
<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">SEE ALSO</A>
<LI><A HREF="#lbAF">AUTHOR</A>
</UL>
</BODY>
</HTML>
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