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4Acknowledgments and Other Issues
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11Acknowledgments and Other Issues
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14<P>
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>
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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
29attribution is included in the source code).  The Group 3 fax stuff
30originated as code from Jef Poskanzer, but has since been rewritten
31several times.  The latest version uses an algorithm from Frank
32Cringle -- consult <TT>libtiff/mkg3states.c</TT> and
33<TT>libtiff/tif_fax3.h</TT> for further information.
34The JPEG support was written by Tom Lane and is dependent on the
35excellent work of Tom Lane and the Independent JPEG Group (IJG)
36who distribute their work under friendly licensing similar to this
37software.
38Many other people have by now helped with bug fixes and code; a
39few of the more persistent contributors have been:
40
41<PRE>
42    Bjorn P. Brox
43    Dan McCoy
44    J.T. Conklin
45    Richard Minner
46    Frank D. Cringle
47    Richard Mlynarik
48    Soren Pingel Dalsgaard
49    Niles Ritter
50    Steve Johnson
51    Karsten Spang
52    Tom Lane
53    Peter Smith
54    Brent Roman
55    Mike Welles
56    Frank Warmerdam
57    Greg Ward
58    Stanislav Brabec
59    Roman Shpount
60    Peter Skarpetis
61    Arvan Pritchard
62    Bernt Herd
63    Joseph Orost
64    Phil Beffery
65    Ivo Penzar
66    Francois Dagand
67    Albert Chin-A-Young
68    Bruce A. Mallett
69    Dwight Kelly
70    Andrey Kiselev
71    Ross Finlayson
72    Dmitry V. Levin
73    Bob Friesenhahn
74    Lee Howard
75</PRE>
76
77(my apology to anyone that was inadvertently not listed.)
78
79<H2>Use and Copyright</H2>
80
81<P><H5><PRE>
82Copyright (c) 1988-1997 Sam Leffler
83Copyright (c) 1991-1997 Silicon Graphics, Inc.
84
85Permission to use, copy, modify, distribute, and sell this software and
86its documentation for any purpose is hereby granted without fee, provided
87that (i) the above copyright notices and this permission notice appear in
88all copies of the software and related documentation, and (ii) the names of
89Sam Leffler and Silicon Graphics may not be used in any advertising or
90publicity relating to the software without the specific, prior written
91permission of Sam Leffler and Silicon Graphics.
92
93THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
94EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
95WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
96
97IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
98ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
99OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
100WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
101LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
102OF THIS SOFTWARE.
103</PRE></H5>
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109Last updated: $Date: 2005-09-12 13:38:21 $
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