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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.3//EN">
<html><head><title>Tgatoppm User Manual</title></head>
<body>
<h1>tgatoppm</h1>
Updated: 02 April 2000
<br>
<a href="#index">Table Of Contents</a>
<h2>NAME</h2>
tgatoppm - convert TrueVision Targa file to a PPM image
<h2 id="synopsis">SYNOPSIS</h2>
<b>tgatoppm</b>
[<b>--alphaout=</b>{<i>alpha-filename</i>,<b>-</b>}]
[<b>--headerdump</b>] <i>tga-filename</i>
<h2 id="description">DESCRIPTION</h2>
<p>This program is part of <a href="index.html">Netpbm</a>.
<p><b>tgatoppm</b> reads a TrueVision Targa file as input and produces
a PPM image as output.
<h2 id="options">OPTIONS</h2>
<p>In addition to the options common to all programs based on libnetpbm
(most notably <b>-quiet</b>, see <a href="index.html#commonoptions">
Common Options</a>), <b>tgatoppm</b> recognizes the following
command line options:
<p>All options can be abbreviated to their shortest unique prefix.
<dl compact>
<dt><b>--alphaout=</b><i>alpha-filename</i>
<dd><b>tgatoppm </b> creates a PGM image containing the transparency channel
values in the input image. If the input image doesn't contain a
transparency channel, the <i>alpha-filename</i> file contains all zero
(transparent) transparency values. If you don't specify <b>--alphaout</b>,
<b>tgatoppm</b> does not generate an alpha file, and if the input
image has a transparency channel, <b>tgatoppm</b> simply discards it.
<p>If you specify <b>-</b> as the filename, <b>tgatoppm</b> writes the
transparency output to Standard Output and discards the image.
<p>See <b><a href="pamcomp.html">pamcomp</a></b> for one way to use
the transparency output file.
<dt><b>--headerdump</b>
<dd>Causes <b>tgatoppm</b> to dump information from the TGA header to
Standard Error.
</dl>
<h2 id="seealso">SEE ALSO</h2>
<b><a href="ppmtotga.html">ppmtotga</a></b>,
<b><a href="pamcomp.html">pamcomp</a></b>,
<b><a href="ppm.html">ppm</a></b>
<h2 id="author">AUTHOR</h2>
<p>Partially based on tga2rast, version 1.0, by Ian J. MacPhedran.
<p>Copyright (C) 1989 by Jef Poskanzer.
<hr>
<h2 id="index">Table Of Contents</h2>
<ul>
<li><a href="#synopsis">SYNOPSIS</a>
<li><a href="#description">DESCRIPTION</a>
<li><a href="#options">OPTIONS</a>
<li><a href="#seealso">SEE ALSO</a>
<li><a href="#author">AUTHOR</a>
</ul>
</body>
</html>
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