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<section id="acknowledgments">
<h1>Acknowledgments<a class="headerlink" href="#acknowledgments" title="Permalink to this heading">¶</a></h1>
<a class="reference internal image-reference" href="../_images/ring.gif"><img alt="ring" src="../_images/ring.gif" style="width: 124px;" /></a>
<section id="maintainers">
<h2>Maintainers<a class="headerlink" href="#maintainers" title="Permalink to this heading">¶</a></h2>
<p>The LibTIFF software was written by Sam Leffler while working for
Silicon Graphics.</p>
<p>Silicon Graphics has seen fit to allow us to give this work away. It
is free. There is no support or guarantee of any sort as to its
operations, correctness, or whatever. If you do anything useful with
all or parts of it you need to honor the copyright notices. It would
also be nice to be acknowledged.</p>
<p>LibTIFF as been maintained by cast of others since 1999.</p>
<p>The persons currently actively maintaining and releasing libtiff are:</p>
<ul class="simple">
<li><p>Even Rouault</p></li>
<li><p><a class="reference external" href="mailto:bfriesen%40GraphicsMagick.org">Bob Friesenhahn</a></p></li>
</ul>
<p>Significant maintainers in the past (since the 3.5.1 release) were:</p>
<ul class="simple">
<li><p><a class="reference external" href="http://pobox.com/~warmerdam">Frank Warmerdam</a></p></li>
<li><p><a class="reference external" href="mailto:dron%40ak4719.spb.edu">Andrey Kiselev</a></p></li>
<li><p>Joris Van Damme</p></li>
<li><p>Lee Howard</p></li>
</ul>
</section>
<section id="contributors">
<h2>Contributors<a class="headerlink" href="#contributors" title="Permalink to this heading">¶</a></h2>
<p>The LZW algorithm is derived from the compress program (the proper attribution
is included in the source code).</p>
<p>The Group 3 fax stuff originated as code from Jef Poskanzer, but has since
been rewritten several times. The latest version uses an algorithm from
Frank Cringle – consult <code class="file docutils literal notranslate"><span class="pre">libtiff/mkg3states.c</span></code> and
<code class="file docutils literal notranslate"><span class="pre">libtiff/tif_fax3.h</span></code> for further information.</p>
<p>The JPEG support was written by Tom Lane and is dependent on the
excellent work of Tom Lane and the Independent JPEG Group (IJG) who distribute
their work under friendly licensing similar to this software. Joris Van Damme
implemented the robust Old JPEG decoder (as included in libtiff since version
3.9.0, there was another Old JPEG module in older releases, which was
incomplete and unsuitable for many existing images of that format).</p>
<p>JBIG module was written by Lee Howard and depends on JBIG library from the Markus
Kuhn.</p>
<p>Many other people have by now helped with bug fixes and code; a few of
the more persistent contributors have been:</p>
<table class="docutils align-default" id="id1">
<caption><span class="caption-text">Contributors</span><a class="headerlink" href="#id1" title="Permalink to this table">¶</a></caption>
<colgroup>
<col style="width: 100.0%" />
</colgroup>
<tbody>
<tr class="row-odd"><td><p>Bjorn P. Brox</p></td>
</tr>
<tr class="row-even"><td><p>Dan McCoy</p></td>
</tr>
<tr class="row-odd"><td><p>J.T. Conklin</p></td>
</tr>
<tr class="row-even"><td><p>Richard Minner</p></td>
</tr>
<tr class="row-odd"><td><p>Frank D. Cringle</p></td>
</tr>
<tr class="row-even"><td><p>Richard Mlynarik</p></td>
</tr>
<tr class="row-odd"><td><p>Soren Pingel Dalsgaard</p></td>
</tr>
<tr class="row-even"><td><p>Niles Ritter</p></td>
</tr>
<tr class="row-odd"><td><p>Steve Johnson</p></td>
</tr>
<tr class="row-even"><td><p>Karsten Spang</p></td>
</tr>
<tr class="row-odd"><td><p>Tom Lane</p></td>
</tr>
<tr class="row-even"><td><p>Peter Smith</p></td>
</tr>
<tr class="row-odd"><td><p>Brent Roman</p></td>
</tr>
<tr class="row-even"><td><p>Mike Welles</p></td>
</tr>
<tr class="row-odd"><td><p>Frank Warmerdam</p></td>
</tr>
<tr class="row-even"><td><p>Greg Ward</p></td>
</tr>
<tr class="row-odd"><td><p>Stanislav Brabec</p></td>
</tr>
<tr class="row-even"><td><p>Roman Shpount</p></td>
</tr>
<tr class="row-odd"><td><p>Peter Skarpetis</p></td>
</tr>
<tr class="row-even"><td><p>Arvan Pritchard</p></td>
</tr>
<tr class="row-odd"><td><p>Bernt Herd</p></td>
</tr>
<tr class="row-even"><td><p>Joseph Orost</p></td>
</tr>
<tr class="row-odd"><td><p>Phil Beffery</p></td>
</tr>
<tr class="row-even"><td><p>Ivo Penzar</p></td>
</tr>
<tr class="row-odd"><td><p>Francois Dagand</p></td>
</tr>
<tr class="row-even"><td><p>Albert Chin-A-Young</p></td>
</tr>
<tr class="row-odd"><td><p>Bruce A. Mallett</p></td>
</tr>
<tr class="row-even"><td><p>Dwight Kelly</p></td>
</tr>
<tr class="row-odd"><td><p>Andrey Kiselev</p></td>
</tr>
<tr class="row-even"><td><p>Ross Finlayson</p></td>
</tr>
<tr class="row-odd"><td><p>Dmitry V. Levin</p></td>
</tr>
<tr class="row-even"><td><p>Bob Friesenhahn</p></td>
</tr>
<tr class="row-odd"><td><p>Lee Howard</p></td>
</tr>
<tr class="row-even"><td><p>Joris Van Damme</p></td>
</tr>
<tr class="row-odd"><td><p>Tavis Ormandy</p></td>
</tr>
<tr class="row-even"><td><p>Richard Nolde</p></td>
</tr>
<tr class="row-odd"><td><p>Even Rouault</p></td>
</tr>
<tr class="row-even"><td><p>Roger Leigh</p></td>
</tr>
</tbody>
</table>
<p>(apologies to anyone that was inadvertently not listed.)</p>
</section>
</section>
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<li><a class="reference internal" href="#">Acknowledgments</a><ul>
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<li><a class="reference internal" href="#contributors">Contributors</a></li>
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