text: /* Original code has been submitted by Liu Liu. Here is the copyright.
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   * An OpenCV Implementation of SURF
   *
   * However, the speed of this implementation is something comparable to original one.
   *
   * Copyright© 2008, Liu Liu All rights reserved.
   *
   * 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 notice, 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.
   * 	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