/* * Speeded-Up Robust Features (SURF) * http://people.ee.ethz.ch/~surf * * Authors: Herbert Bay, Andreas Ess, Geert Willems * Windows port by Stefan Saur * * Copyright (2006): ETH Zurich, Switzerland * Katholieke Universiteit Leuven, Belgium * All rights reserved. * * For details, see the paper: * Herbert Bay,  Tinne Tuytelaars,  Luc Van Gool, *  "SURF: Speeded Up Robust Features" * Proceedings of the ninth European Conference on Computer Vision, May 2006 * * Permission to use, copy, modify, and distribute this software and * its documentation for educational, research, and non-commercial * purposes, without fee and without a signed licensing agreement, is * hereby granted, provided that the above copyright notice and this * paragraph appear in all copies modifications, and distributions. * * Any commercial use or any redistribution of this software * requires a license from one of the above mentioned establishments. * * For further details, contact Andreas Ess (aess@vision.ee.ethz.ch). */#ifndef __SURF_H#define __SURF_Hnamespace surf {class Image;class Surf {  public:    //! Constructor    Surf();    //! Constructor with parameters    Surf(Image *im, bool dbl=false, bool usurf=false,          bool ext=false, int insi=4);    //! Destructor    ~Surf();    //! Get length of the descriptor vector    int getVectLength();    //! set Ipoint for which a descriptor has to be computed    void setIpoint(Ipoint *ipt);    //! Assign reproducible orienation    void assignOrientation();    //! Compute the robust features    void makeDescriptor();  protected:    //! Create the vector     void createVector(double scale,                       double row, double col);    //! Create the vector     void createUprightVector(double scale,                             double row, double col);    //! Add sample to the vector    void AddSample(int r, int c, double rpos,                    double cpos, double rx, double cx, int step);    //! Add upright sample to the vector    void AddUprightSample(int r, int c, double rpos,                          double cpos, double rx, double cx, int step);    //! Place sample to index in vector    void PlaceInIndex(double mag1, int ori1,                      double mag2, int ori2, double rx, double cx);    //! Normalise descriptor vector for illumination invariance for    //! Lambertian surfaces    void normalise();    //! Create Lookup tables     void createLookups();  private:    Image *_iimage;    Ipoint *_current;    double ***_index;    bool _doubleImage;    bool _upright;    bool _extended;    int _VecLength;    int _IndexSize;    double _MagFactor;    int _OriSize;    int _width, _height;    double _sine, _cose;    double **_Pixels;    double _lookup1[83], _lookup2[40];};}#endif // SURF_H