LICENSE

Copyright (c) 2006-2012, Rob Hess <rob@iqengines.com>
All rights reserved.

The following patent has been issued for methods embodied in this 
software: "Method and apparatus for identifying scale invariant features 
in an image and use of same for locating an object in an image," David 
G. Lowe, US Patent 6,711,293 (March 23, 2004). Provisional application 
filed March 8, 1999. Asignee: The University of British Columbia. For 
further details, contact David Lowe (lowe@cs.ubc.ca) or the 
University-Industry Liaison Office of the University of British 
Columbia.

Note that restrictions imposed by this patent (and possibly others) 
exist independently of and may be in conflict with the freedoms granted 
in this license, which refers to copyright of the program, not patents 
for any methods that it implements.  Both copyright and patent law must 
be obeyed to legally use and redistribute this program and it is not the 
purpose of this license to induce you to infringe any patents or other 
property right claims or to contest validity of any such claims.  If you 
redistribute or use the program, then this license merely protects you 
from committing copyright infringement.  It does not protect you from 
committing patent infringement.  So, before you do anything with this 
program, make sure that you have permission to do so not merely in terms 
of copyright, but also in terms of patent law.

Please note that this license is not to be understood as a guarantee 
either.  If you use the program according to this license, but in 
conflict with patent law, it does not mean that the licensor will refund 
you for any losses that you incur if you are sued for your patent 
infringement.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are 
met:
    * Redistributions of source code must retain the above copyright and 
      patent notices, this list of conditions and the following 
      disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in 
      the documentation and/or other materials provided with the 
      distribution.
    * Neither the name of Oregon State University nor the names of its 
      contributors may be used to endorse or promote products derived 
      from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.