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4Acknowledgments and Other Issues
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11Acknowledgments and Other Issues
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15Silicon Graphics has seen fit to allow us to give this work away.  It
16is free.  There is no support or guarantee of any sort as to its
17operations, correctness, or whatever.  If you do anything useful with
18all or parts of it you need to honor the copyright notices.  It would
19also be nice to be acknowledged.<p>
20
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22
23<H2>Acknowledgements</H2>
24
25The libtiff software was written by Sam Leffler while working for
26Silicon Graphics.<p>
27
28The LZW algorithm is derived from the compress program (the proper attribution
29is included in the source code).  The Group 3 fax stuff originated as code
30from Jef Poskanzer, but has since been rewritten several times.  The latest
31version uses an algorithm from Frank Cringle -- consult
32<TT>libtiff/mkg3states.c</TT> and <TT>libtiff/tif_fax3.h</TT> for further
33information. The JPEG support was written by Tom Lane and is dependent on the
34excellent work of Tom Lane and the Independent JPEG Group (IJG) who distribute
35their work under friendly licensing similar to this software. Joris Van Damme
36implemented the robust Old JPEG decoder (as included in libtiff since version
373.9.0, there was another Old JPEG module in older releases, which was
38incomplete and unsuitable for many existing images of that format). JBIG
39module was written by Lee Howard and depends on JBIG library from the Markus
40Kuhn. Many other people have by now helped with bug fixes and code; a few of
41the more persistent contributors have been:
42
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44    Bjorn P. Brox
45    Dan McCoy
46    J.T. Conklin
47    Richard Minner
48    Frank D. Cringle
49    Richard Mlynarik
50    Soren Pingel Dalsgaard
51    Niles Ritter
52    Steve Johnson
53    Karsten Spang
54    Tom Lane
55    Peter Smith
56    Brent Roman
57    Mike Welles
58    Frank Warmerdam
59    Greg Ward
60    Stanislav Brabec
61    Roman Shpount
62    Peter Skarpetis
63    Arvan Pritchard
64    Bernt Herd
65    Joseph Orost
66    Phil Beffery
67    Ivo Penzar
68    Francois Dagand
69    Albert Chin-A-Young
70    Bruce A. Mallett
71    Dwight Kelly
72    Andrey Kiselev
73    Ross Finlayson
74    Dmitry V. Levin
75    Bob Friesenhahn
76    Lee Howard
77    Joris Van Damme
78    Tavis Ormandy
79    Richard Nolde
80    Even Rouault
81</PRE>
82
83(my apology to anyone that was inadvertently not listed.)
84
85<H2>Use and Copyright</H2>
86
87<P><H5><PRE>
88Copyright (c) 1988-1997 Sam Leffler
89Copyright (c) 1991-1997 Silicon Graphics, Inc.
90
91Permission to use, copy, modify, distribute, and sell this software and
92its documentation for any purpose is hereby granted without fee, provided
93that (i) the above copyright notices and this permission notice appear in
94all copies of the software and related documentation, and (ii) the names of
95Sam Leffler and Silicon Graphics may not be used in any advertising or
96publicity relating to the software without the specific, prior written
97permission of Sam Leffler and Silicon Graphics.
98
99THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
100EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
101WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
102
103IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
104ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
105OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
106WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
107LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
108OF THIS SOFTWARE.
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115Last updated: $Date: 2016-09-25 20:05:44 $
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