The Independent JPEG Group's JPEG software
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The following software are included in this project and are licensed as detailed below:   

Component
License
libjpeg
Independent JPEG Group License
Licenses
Independent JPEG Group License
libjpeg 9c
The Independent JPEG Group's JPEG software
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README for release 6b of 27-Mar-1998
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This distribution contains the sixth public release of the Independent JPEG
Group's free JPEG software. You are welcome to redistribute this software and to
use it for any purpose, subject to the conditions under LEGAL ISSUES, below.

Serious users of this software (particularly those incorporating it into larger
programs) should contact IJG at jpeg-info@uunet.uu.net to be added to our
electronic mailing list. Mailing list members are notified of updates and have a
chance to participate in technical discussions, etc.

This software is the work of Tom Lane, Philip Gladstone, Jim Boucher, Lee
Crocker, Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi, Guido
Vollbeding, Ge' Weijers, and other members of the Independent JPEG Group.

IJG is not affiliated with the official ISO JPEG standards committee.

LEGAL ISSUES
============

In plain English:

1. We don't promise that this software works. (But if you find any bugs, please
let us know!)

2. You can use this software for whatever you want. You don't have to pay us.

3. You may not pretend that you wrote this software. If you use it in a
program, you must acknowledge somewhere in your documentation that you've
used the IJG code.

In legalese:

The authors make NO WARRANTY or representation, either express or implied, with
respect to this software, its quality, accuracy, merchantability, or fitness for
a particular purpose. This software is provided "AS IS", and you, its user,
assume the entire risk as to its quality and accuracy.

This software is copyright (C) 1991-1998, Thomas G. Lane. All Rights Reserved
except as specified below.

Permission is hereby granted to use, copy, modify, and distribute this software
(or portions thereof) for any purpose, without fee, subject to these conditions:

(1) If any part of the source code for this software is distributed, then this
README file must be included, with this copyright and no-warranty notice
unaltered; and any additions, deletions, or changes to the original files must be
clearly indicated in accompanying documentation.

(2) If only executable code is distributed, then the accompanying documentation
must state that "this software is based in part on the work of the Independent
JPEG Group".

(3) Permission for use of this software is granted only if the user accepts full
responsibility for any undesirable consequences; the authors accept NO LIABILITY
for damages of any kind.

These conditions apply to any software derived from or based on the IJG code, not
just to the unmodified library. If you use our work, you ought to acknowledge us.

Permission is NOT granted for the use of any IJG author's name or company name in
advertising or publicity relating to this software or products derived from it.
This software may be referred to only as "the Independent JPEG Group's software".

We specifically permit and encourage the use of this software as the basis of
commercial products, provided that all warranty or liability claims are assumed
by the product vendor.

ansi2knr.c is included in this distribution by permission of L. Peter Deutsch,
sole proprietor of its copyright holder, Aladdin Enterprises of Menlo Park, CA.
ansi2knr.c is NOT covered by the above copyright and conditions, but instead by
the usual distribution terms of the Free Software Foundation; principally, that
you must include source code if you redistribute it. (See the file ansi2knr.c for
full details.) However, since ansi2knr.c is not needed as part of any program
generated from the IJG code, this does not limit you more than the foregoing
paragraphs do.

The Unix configuration script "configure" was produced with GNU Autoconf. It is
copyright by the Free Software Foundation but is freely distributable. The same
holds for its supporting scripts (config.guess, config.sub, ltconfig, ltmain.sh).
Another support script, install-sh, is copyright by M.I.T. but is also freely
distributable.

It appears that the arithmetic coding option of the JPEG spec is covered by
patents owned by IBM, AT&T, and Mitsubishi. Hence arithmetic coding cannot
legally be used without obtaining one or more licenses. For this reason, support
for arithmetic coding has been removed from the free JPEG software. (Since
arithmetic coding provides only a marginal gain over the unpatented Huffman mode,
it is unlikely that very many implementations will support it.) So far as we are
aware, there are no patent restrictions on the remaining code.

The IJG distribution formerly included code to read and write GIF files. To avoid
entanglement with the Unisys LZW patent, GIF reading support has been removed
altogether, and the GIF writer has been simplified to produce "uncompressed
GIFs". This technique does not use the LZW algorithm; the resulting GIF files are
larger than usual, but are readable by all standard GIF decoders.

We are required to state that

"The Graphics Interchange Format(c) is the Copyright property of CompuServe
Incorporated. GIF(sm) is a Service Mark property of CompuServe Incorporated."


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