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3rdparty/opencv-4.5.4/modules/features2d/src/fast.hpp 2.32 KB
f4334277   Hu Chunming   提交3rdparty
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  /* This is FAST corner detector, contributed to OpenCV by the author, Edward Rosten.
     Below is the original copyright and the references */
  
  /*
  Copyright (c) 2006, 2008 Edward Rosten
  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.
  
      *Neither the name of the University of Cambridge 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 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.
  */
  
  /*
  The references are:
   * Machine learning for high-speed corner detection,
     E. Rosten and T. Drummond, ECCV 2006
   * Faster and better: A machine learning approach to corner detection
     E. Rosten, R. Porter and T. Drummond, PAMI, 2009
  */
  
  #ifndef OPENCV_FEATURES2D_FAST_HPP
  #define OPENCV_FEATURES2D_FAST_HPP
  
  namespace cv
  {
  namespace opt_AVX2
  {
  #if CV_TRY_AVX2
  class FAST_t_patternSize16_AVX2
  {
  public:
      static Ptr<FAST_t_patternSize16_AVX2> getImpl(int _cols, int _threshold, bool _nonmax_suppression, const int* _pixel);
      virtual void process(int &j, const uchar* &ptr, uchar* curr, int* cornerpos, int &ncorners) = 0;
      virtual ~FAST_t_patternSize16_AVX2() {};
  };
  #endif
  }
  }
  #endif