with_single_right_link_dmax_ratio_aligned.hh 7.06 KB
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// Copyright (C) 2009, 2010 EPITA Research and Development Laboratory
// (LRDE)
//
// This file is part of Olena.
//
// Olena is free software: you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation, version 2 of the License.
//
// Olena is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Olena.  If not, see <http://www.gnu.org/licenses/>.
//
// As a special exception, you may use this file as part of a free
// software project without restriction.  Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to produce
// an executable, this file does not by itself cause the resulting
// executable to be covered by the GNU General Public License.  This
// exception does not however invalidate any other reasons why the
// executable file might be covered by the GNU General Public License.

#ifndef SCRIBO_PRIMITIVE_LINK_WITH_SINGLE_RIGHT_LINK_DMAX_RATIO_ALIGNED_HH
# define SCRIBO_PRIMITIVE_LINK_WITH_SINGLE_RIGHT_LINK_DMAX_RATIO_ALIGNED_HH

/// \file
///
/// Link text objects with their right neighbor according to a maximum
/// distance.

# include <mln/core/concept/image.hh>
# include <mln/core/concept/neighborhood.hh>

# include <mln/accu/center.hh>
# include <mln/labeling/compute.hh>
# include <mln/math/abs.hh>
# include <mln/util/array.hh>

# include <scribo/core/macros.hh>
# include <scribo/core/component_set.hh>
# include <scribo/core/object_links.hh>

# include <scribo/primitive/link/internal/dmax_default.hh>
# include <scribo/primitive/link/internal/find_link.hh>
# include <scribo/primitive/link/internal/link_single_dmax_ratio_base.hh>

# include <scribo/primitive/link/compute.hh>

# include <scribo/filter/internal/component_aligned.hh>


namespace scribo
{

  namespace primitive
  {

    namespace link
    {

      /*! \brief Link objects with their right neighbor if exists.

	  \param[in] components A component set.
	  \param[in] dmax_ratio Size ratio defining the maximum lookup
	                        distance.
	  \param[in] anchor Starting point for the neighbor lookup.

	  \return Object links data.


	  Look for a neighbor until a maximum distance defined by :

	  dmax = w / 2 + dmax_ratio * max(h, w)

	  where w is the bounding box width and h the bounding box height.

      */
      template <typename L>
      inline
      object_links<L>
      with_single_right_link_dmax_ratio_aligned(
	const component_set<L>& components,
	float dmax_ratio,
	float min_angle, float max_angle,
	anchor::Type anchor);

      /// \overload
      /// anchor is set to MassCenter.
      template <typename L>
      inline
      object_links<L>
      with_single_right_link_dmax_ratio_aligned(
	const component_set<L>& components,
	float dmax_ratio,
	float min_angle, float max_angle);


      /// \overload
      /// dmax_ratio is set to 3.
      /// anchor is set to MassCenter.
      template <typename L>
      inline
      object_links<L>
      with_single_right_link_dmax_ratio_aligned(
	const component_set<L>& components);



# ifndef MLN_INCLUDE_ONLY


      namespace internal
      {

	// Functor

	template <typename L, typename F>
	class single_right_dmax_ratio_aligned_functor
	  : public link_single_dmax_ratio_base<L, F,
					       single_right_dmax_ratio_aligned_functor<L,F> >
	{
	  typedef single_right_dmax_ratio_aligned_functor<L,F> self_t;
	  typedef link_single_dmax_ratio_base<L, F, self_t> super_;

	public:
	  typedef mln_site(L) P;

	  single_right_dmax_ratio_aligned_functor(
	    const component_set<L>& components,
	    const DMax_Functor<F>& dmax_f,
	    float min_angle,
	    float max_angle,
	    anchor::Type anchor_)
	    : super_(components, exact(dmax_f), anchor::Horizontal),
	      anchor(anchor_)
	  {
	    std::cout << "min_angle = " << min_angle
		      << " - max_angle = " << max_angle
		      << std::endl;
	    std::cout << "min_angle_rad = " << min_alpha_rad
		      << " - max_angle_rad = " << max_alpha_rad
		      << std::endl;
	    min_alpha_rad = (min_angle / 180.0f) * math::pi;
	    max_alpha_rad = (max_angle / 180.0f) * math::pi;
	  }

	  void compute_next_site_(P& p)
	  {
	    ++p.col();
	  }


	  inline
	  bool
	  valid_link_(unsigned current_object,
		      const P& start_point,
		      const P& p)
	  {
	    bool super_b = super_::valid_link_(current_object,
					       start_point, p);

	    // Distance between the two components.
	    float dist = math::abs(p[this->direction_] - start_point[this->direction_]);


	    unsigned ldist = this->components_(current_object).bbox().width() / 2;


	    // Components are really close, so the angle is more permissive.
	    if (dist < (ldist + ldist * 0.2))
	    {
	      return super_b
		&&
		filter::internal::component_aligned_rad(this->components_,
							current_object,
							this->labeled_image_(p),
							anchor,
							max_alpha_rad);
	    }


	    // Components are really far, so the angle is less permissive.
	    return super_b
	      && filter::internal::component_aligned_rad(this->components_,
							 current_object,
							 this->labeled_image_(p),
							 anchor,
							 min_alpha_rad);
	  }

	  float min_alpha_rad;
	  float max_alpha_rad;
	  anchor::Type anchor;

	};

      } // end of namespace scribo::primitive::link::internal



      // Facades


      template <typename L, typename F>
      inline
      object_links<L>
      with_single_right_link_dmax_ratio_aligned(
	const component_set<L>& components,
	const DMax_Functor<F>& dmax_f,
	float min_angle, float max_angle,
	anchor::Type anchor)
      {
	trace::entering("scribo::primitive::link::with_single_right_link_dmax_ratio_aligned");

	mln_precondition(components.is_valid());

	internal::single_right_dmax_ratio_aligned_functor<L,F>
	  functor(components, dmax_f, min_angle, max_angle, anchor);

	object_links<L> output = compute(functor, anchor);

	trace::exiting("scribo::primitive::link::with_single_right_link_dmax_ratio_aligned");
	return output;
      }



      template <typename L>
      inline
      object_links<L>
      with_single_right_link_dmax_ratio_aligned(
	const component_set<L>& components,
	float dmax_ratio,
	float min_angle, float max_angle)
      {
	return
	  with_single_right_link_dmax_ratio_aligned(components,
						    internal::dmax_default(dmax_ratio),
						    min_angle,
						    max_angle,
						    anchor::MassCenter);
      }


      template <typename L>
      inline
      object_links<L>
      with_single_right_link_dmax_ratio_aligned(
	const component_set<L>& components)
      {
	return
	  with_single_right_link_dmax_ratio_aligned(components, 3, 3, 10);
      }


# endif // ! MLN_INCLUDE_ONLY

    } // end of namespace scribo::primitive::link

  } // end of namespace scribo::primitive

} // end of namespace scribo

#endif // ! SCRIBO_PRIMITIVE_LINK_WITH_SINGLE_RIGHT_LINK_DMAX_RATIO_ALIGNED_HH