seeds2tiling_roundness.hh

// Copyright (C) 2007, 2008, 2009 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 MLN_GEOM_SEEDS2TILING_ROUNDNESS_HH
# define MLN_GEOM_SEEDS2TILING_ROUNDNESS_HH


# include <map>

# include <mln/core/concept/image.hh>
# include <mln/core/concept/neighborhood.hh>
# include <mln/core/alias/w_window2d_int.hh>
# include <mln/core/site_set/p_priority.hh>
# include <mln/core/site_set/p_queue_fast.hh>
# include <mln/core/routine/duplicate.hh>
# include <mln/accu/stat/mean.hh>
# include <mln/estim/min_max.hh>
# include <mln/algebra/vec.hh>
# include <mln/geom/chamfer.hh>


namespace mln
{
  namespace geom
  {

    template <typename I, typename N>
    I
    seeds2tiling_roundness (Image<I>& ima_, const w_window2d_int& w_win,
                            unsigned max, const Neighborhood<N>& nbh_);


# ifndef MLN_INCLUDE_ONLY

    namespace impl
    {

      template <typename I, typename N>
      inline
      I
      seeds2tiling_roundness(Image<I>& ima_, const w_window2d_int& w_win,
                             unsigned max, const Neighborhood<N>& nbh_)
      {
        trace::entering("geom::impl::seed2tiling_roundness");

        I& ima = exact(ima_);
        const N& nbh = exact(nbh_);
        image2d<unsigned> dist = geom::chamfer(ima, w_win, max);

        I out = duplicate(ima_);
        p_priority<unsigned, p_queue_fast<mln_psite(I)> > q;

        // Init.
        {
          mln_piter(I) p(ima.domain());

          for_all(p)
              q.push(max - dist(p), p);
        }


        // Body: alternative version.
        {
          while (! q.is_empty())
            {
              mln_psite(I) p = q.pop_front();

              if (out(p) != literal::zero) // p has already been processed so ignore
                continue;
              mln_niter(N) n(nbh, p);

              for_all(n) if (ima.has(n))
                if (out(n) != literal::zero)
                  out(p) = out(n);
            }
        }

        trace::exiting("geom::impl::seed2tiling_roundness");
        return out;
      }

    } // end of namespace mln::geom::impl


    // Facade
    template <typename I, typename N>
    inline
    I
    seeds2tiling_roundness(Image<I>& ima_, const w_window2d_int& w_win,
                           unsigned max, const Neighborhood<N>& nbh)
    {
      trace::entering("geom::seed2tiling_roundness");

      mln_precondition(exact(ima_).is_valid());
      I output = impl::seeds2tiling_roundness(ima_, w_win, max, nbh);

      trace::exiting("geom::seed2tiling_roundness");
      return output;
    }



# endif // ! MLN_INCLUDE_ONLY

  } // end of namespace mln::geom

} // end of namespace mln


#endif // ! MLN_GEOM_SEEDS2TILING_ROUNDNESS_HH