
SIFT feature detection implementation
Copyright (C) 2004, Sebastian Nowozin (nowozin@cs.tu-berlin.de)

All rights reserved.


There follows a formal license for this software, please read it carefully.
Probably the most important part for the user is its restriction to
non-commercial use only. The license used the BSD license as template.


LICENSE

Use of this software and redistribution in source and binary forms, with or
without modification, are permitted provided that the following conditions are
met:

    * Any redistribution must contain the complete source code, including all
      modifications. Alternatively, the redistribution may contain a permanent
      pointer to an Internet address where the full modified source code is
      available for download free of charge.

    * The redistributed software contains the following text as prominent
      notice in the source code and as displayed program output whenever the
      program is run:

	"This software is provided for non-commercial use only. The University
	 of British Columbia has applied for a patent on the SIFT algorithm in
	 the United States. Commercial applications of this software may
         require a license from the University of British Columbia."

    * Neither the name of the authors nor the names of its contributors
      may be used to endorse or promote products derived from this software
      without specific prior written permission.

    * The redistributed software must retain the above copyright notice,
      this list of conditions and the following disclaimer.


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 OWNER OR CONTRIBUTORS 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 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.