1999-07-27 17:50:26 -04:00
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<TITLE>
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Acknowledgments and Other Issues
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</HEAD>
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1999-08-13 15:30:57 -04:00
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<BODY BGCOLOR=white>
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<FONT FACE="Arial, Helvetica, Sans">
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1999-07-27 17:50:26 -04:00
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<H1>
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<IMG SRC=images/ring.gif WIDTH=124 HEIGHT=124 ALIGN=left BORDER=1 HSPACE=6>
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Acknowledgments and Other Issues
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</H1>
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<P>
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2003-07-25 11:13:19 -04:00
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Silicon Graphics has seen fit to allow us to give this work away. It
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1999-07-27 17:50:26 -04:00
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is free. There is no support or guarantee of any sort as to its
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operations, correctness, or whatever. If you do anything useful with
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2003-07-25 11:13:19 -04:00
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all or parts of it you need to honor the copyright notices. It would
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also be nice to be acknowledged.<p>
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1999-07-27 17:50:26 -04:00
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<BR CLEAR=left>
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<H2>Acknowledgements</H2>
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2003-07-25 11:13:19 -04:00
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The libtiff software was written by Sam Leffler while working for
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Silicon Graphics.<p>
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2006-10-12 11:44:42 -04:00
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The LZW algorithm is derived from the compress program (the proper attribution
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is included in the source code). The Group 3 fax stuff originated as code
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from Jef Poskanzer, but has since been rewritten several times. The latest
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version uses an algorithm from Frank Cringle -- consult
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<TT>libtiff/mkg3states.c</TT> and <TT>libtiff/tif_fax3.h</TT> for further
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information. The JPEG support was written by Tom Lane and is dependent on the
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excellent work of Tom Lane and the Independent JPEG Group (IJG) who distribute
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their work under friendly licensing similar to this software. Joris Van Damme
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implemented the robust Old JPEG decoder (as included in libtiff since version
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2006-10-12 11:46:25 -04:00
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3.9.0, there was another Old JPEG module in older releases, which was
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incomplete and unsuitable for many existing images of that format). JBIG
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module was written by Lee Howard and depends on JBIG library from the Markus
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Kuhn. Many other people have by now helped with bug fixes and code; a few of
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the more persistent contributors have been:
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1999-07-27 17:50:26 -04:00
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<PRE>
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2001-03-28 20:38:54 -05:00
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Bjorn P. Brox
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Dan McCoy
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J.T. Conklin
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Richard Minner
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Frank D. Cringle
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Richard Mlynarik
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Soren Pingel Dalsgaard
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Niles Ritter
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Steve Johnson
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Karsten Spang
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Tom Lane
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Peter Smith
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Brent Roman
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Mike Welles
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2002-03-24 11:36:43 -05:00
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Frank Warmerdam
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2001-03-28 20:38:54 -05:00
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Greg Ward
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Stanislav Brabec
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Roman Shpount
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Peter Skarpetis
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Arvan Pritchard
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Bernt Herd
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Joseph Orost
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Phil Beffery
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Ivo Penzar
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Francois Dagand
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Albert Chin-A-Young
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Bruce A. Mallett
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2002-03-24 11:36:43 -05:00
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Dwight Kelly
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Andrey Kiselev
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2003-12-23 05:28:17 -05:00
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Ross Finlayson
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2004-09-28 13:17:19 -04:00
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Dmitry V. Levin
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2005-06-24 11:28:03 -04:00
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Bob Friesenhahn
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2005-09-12 09:38:21 -04:00
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Lee Howard
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2005-10-23 15:43:29 -04:00
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Joris Van Damme
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2006-10-12 11:44:42 -04:00
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Tavis Ormandy
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1999-07-27 17:50:26 -04:00
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</PRE>
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(my apology to anyone that was inadvertently not listed.)
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<H2>Use and Copyright</H2>
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<P><H5><PRE>
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Copyright (c) 1988-1997 Sam Leffler
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Copyright (c) 1991-1997 Silicon Graphics, Inc.
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Permission to use, copy, modify, distribute, and sell this software and
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its documentation for any purpose is hereby granted without fee, provided
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that (i) the above copyright notices and this permission notice appear in
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all copies of the software and related documentation, and (ii) the names of
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Sam Leffler and Silicon Graphics may not be used in any advertising or
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publicity relating to the software without the specific, prior written
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permission of Sam Leffler and Silicon Graphics.
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THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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OF THIS SOFTWARE.
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</PRE></H5>
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<P>
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<HR>
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2006-10-12 11:46:25 -04:00
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Last updated: $Date: 2006-10-12 15:46:25 $
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1999-07-27 17:50:26 -04:00
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