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lines_discontinued.hh
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26 
27 #ifndef SCRIBO_PRIMITIVE_EXTRACT_LINES_DISCONTINUED_HH
28 # define SCRIBO_PRIMITIVE_EXTRACT_LINES_DISCONTINUED_HH
29 
33 
34 
35 # include <mln/core/concept/image.hh>
36 # include <mln/core/concept/window.hh>
37 # include <mln/core/concept/neighborhood.hh>
38 
39 # include <mln/labeling/blobs.hh>
40 
41 # include <mln/morpho/rank_filter.hh>
42 # include <mln/morpho/dilation.hh>
43 
44 # include <scribo/core/macros.hh>
45 # include <scribo/primitive/extract/components.hh>
46 
47 namespace scribo
48 {
49 
50  namespace primitive
51  {
52 
53  namespace extract
54  {
55 
56  using namespace mln;
57 
58 
60 
76  template <typename I, typename N, typename V, typename W>
77  component_set<mln_ch_value(I,V)>
78  lines_discontinued(const Image<I>& input_,
79  const Neighborhood<N>& nbh_, V& nlines,
80  const Window<W>& win_, unsigned rank_k);
81 
82 
83 
84 
85 # ifndef MLN_INCLUDE_ONLY
86 
87 
88  namespace internal
89  {
90 
91  template <typename I, typename N, typename V, typename W>
92  void
93  lines_discontinued_tests(const Image<I>& input,
94  const Neighborhood<N>& nbh, V& nlines,
95  const Window<W>& win_, unsigned rank_k)
96  {
97  mlc_equal(mln_value(I),bool)::check();
98  mlc_bool(mln_site_(I)::dim == 2)::check();
99  mlc_is_a(V, mln::value::Symbolic)::check();
100 
101  const W& win = exact(win_);
102 
103  mln_precondition(exact(input).is_valid());
104  mln_precondition(exact(nbh).is_valid());
105  mln_precondition(win.is_valid());
106 
107  mln_precondition(win.length() > 2 * (rank_k + 1));
108 
109  (void) input;
110  (void) nbh;
111  (void) win;
112  (void) nlines;
113  (void) rank_k;
114  }
115 
116  } // end of namespace scribo::primitive::internal
117 
118 
119 
120  template <typename I, typename N, typename V, typename W>
121  inline
122  component_set<mln_ch_value(I,V)>
123  lines_discontinued(const Image<I>& input_,
124  const Neighborhood<N>& nbh_, V& nlines,
125  const Window<W>& win_, unsigned rank_k)
126  {
127  mln_trace("scribo::primitive::extract::lines_discontinued");
128 
129  internal::lines_discontinued_tests(input_, nbh_, nlines, win_, rank_k);
130 
131  const I& input = exact(input_);
132  const N& nbh = exact(nbh_);
133  const W& win = exact(win_);
134 
135  int dil = win.length() - 2 * (rank_k + 1);
136  mln_assertion(dil > 0);
137 
138  if (! (dil % 2)) // Make sure the window have an odd size.
139  dil += 1;
140 
141  mln_ch_value(I,bool) filter
142  = morpho::dilation(morpho::rank_filter(input, win, rank_k), W(dil));
143  component_set<mln_ch_value(I,V)> output
144  = primitive::extract::components(filter, nbh, nlines);
145 
146  return output;
147  }
148 
149 
150 # endif // ! MLN_INCLUDE_ONLY
151 
152 
153  } // end of namespace scribo::primitive::extract
154 
155  } // end of namespace scribo::primitive
156 
157 } // end of namespace scribo
158 
159 #endif // ! SCRIBO_PRIMITIVE_EXTRACT_LINES_DISCONTINUED_HH