HoughLineDetector.h

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/********************************************************************
**                Image Component Library (ICL)                    **
**                                                                 **
** Copyright (C) 2006-2013 CITEC, University of Bielefeld          **
**                         Neuroinformatics Group                  **
** Website: www.iclcv.org and                                      **
**          http://opensource.cit-ec.de/projects/icl               **
**                                                                 **
** File   : ICLCV/src/ICLCV/HoughLineDetector.h                    **
** Module : ICLCV                                                  **
** Authors: Christof Elbrechter                                    **
**                                                                 **
**                                                                 **
** GNU LESSER GENERAL PUBLIC LICENSE                               **
** This file may be used under the terms of the GNU Lesser General **
** Public License version 3.0 as published by the                  **
**                                                                 **
** Free Software Foundation and appearing in the file LICENSE.LGPL **
** included in the packaging of this file.  Please review the      **
** following information to ensure the license requirements will   **
** be met: http://www.gnu.org/licenses/lgpl-3.0.txt                **
**                                                                 **
** The development of this software was supported by the           **
** Excellence Cluster EXC 277 Cognitive Interaction Technology.    **
** The Excellence Cluster EXC 277 is a grant of the Deutsche       **
** Forschungsgemeinschaft (DFG) in the context of the German       **
** Excellence Initiative.                                          **
**                                                                 **
********************************************************************/

#pragma once


#include <cmath>
#include <vector>
#include <ICLMath/FixedVector.h>
#include <ICLUtils/Range.h>
#include <ICLUtils/Point.h>
#include <ICLUtils/Point32f.h>
#include <ICLMath/DynMatrix.h>
#include <ICLMath/StraightLine2D.h>
#include <ICLCore/Img.h>
#include <ICLUtils/Uncopyable.h>
#include <ICLUtils/Configurable.h>

namespace icl{
  namespace cv{

    class ICLCV_API HoughLineDetector : public utils::Configurable{
      struct Data;
      Data *m_data;

      public:


      HoughLineDetector(float dRho=0.1, float dR=10,
                        const utils::Range32f &rRange=utils::Range32f(0,::sqrt(640*640+480*480)),
                        float rInhibitionRange=10,
                        float rhoInhibitionRange=0.3,
                        bool gaussianInhibition=true,
                        bool blurHoughSpace=true,
                        bool dilateEntries=true,
                        bool blurredSampling=false);

      ~HoughLineDetector();


      void add(const utils::Point &p);

      void add(const std::vector<utils::Point> &ps);

      void add(const utils::Point32f &p);

      void add(const std::vector<utils::Point32f> &ps);

      template<class T>
      void add(const math::FixedColVector<T,2> &p){
        add_intern(p[0],p[1]);
      }

      template<class T>
      void add(const std::vector<const math::FixedColVector<T,2> > &ps){
        for(unsigned int i=0;i<ps.size();++i) add(ps[i]);
      }

      void add(const core::Img8u &binaryImage);

      const core::Img32s &getImage() const;

      const core::Img32f &getInhibitionMap() const;

      void reset();

      std::vector<math::StraightLine2D> getLines(int max, bool resetAfterwards=true);


      std::vector<math::StraightLine2D> getLines(int max, std::vector<float> &significances, bool resetAfterwards=true);

      private:
      void prepare_all();

      void prepare(float dRho, float dR, const utils::Range32f &rRange,
                   float rInhibitionRange, float rhoInhibitionRange,
                   bool gaussianInhibition=true,
                   bool blurHoughSpace=true,
                   bool dilateEntries=true,
                   bool blurredSampling=false);

      float r(float rho, float x, float y) const;

      int getX(float rho) const;

      int getY(float r) const;

      float getRho(int x) const;

      float getR(int y) const;

      void incLut(float rho, float r);

      void incLutBlurred(float rho, float r);

      int &cyclicLUT(int x, int y);

      void apply_inhibition(const utils::Point &p);

      void add_intern(float x, float y);

      void add_intern2(float x, float y);

      void blur_hough_space_if_necessary();

    };

  } // namespace cv
}