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lines_h_pattern.hh
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26 
27 #ifndef SCRIBO_PRIMITIVE_EXTRACT_LINES_H_PATTERN_HH
28 # define SCRIBO_PRIMITIVE_EXTRACT_LINES_H_PATTERN_HH
29 
33 
34 # include <cmath>
35 
36 # include <mln/core/concept/image.hh>
37 # include <mln/core/alias/window2d.hh>
38 # include <mln/win/rectangle2d.hh>
39 # include <mln/morpho/dilation.hh>
40 
41 # include <mln/arith/times.hh>
42 
43 # include <scribo/primitive/extract/lines_pattern.hh>
44 
45 # include <scribo/primitive/internal/rd.hh>
46 
47 namespace scribo
48 {
49 
50  namespace primitive
51  {
52 
53  namespace extract
54  {
55 
56  using namespace mln;
57 
83  template <typename I>
84  mln_concrete(I)
85  lines_h_pattern(const Image<I>& input, unsigned length, unsigned delta);
86 
87 
88 # ifndef MLN_INCLUDE_ONLY
89 
90  template <typename I>
91  mln_concrete(I)
92  lines_h_pattern(const Image<I>& input, unsigned length, unsigned delta)
93  {
94  mln_trace("scribo::primitive::extract::lines_h_pattern");
95 
96  mlc_is(mln_value(I), bool)::check();
97  mln_precondition(exact(input).is_valid());
98 
99  // FIXME: not generic.
100  window2d win;
101  mln_deduce(I, site, dpsite)
102  dp1(-delta - 1, 0),
103  dp2( delta + 1, 0);
104  win.insert(dp1);
105  win.insert(dp2);
106 
107  mln_concrete(I) output = lines_pattern(input, length, 1, win);
108 
109  unsigned hl = length;
110  if (! (hl % 2))
111  ++hl;
112  win::rectangle2d w(delta, hl);
113 
114  mln_concrete(I)
115  output_dil = morpho::dilation(output, w);
116 
117  output = scribo::primitive::internal::rd(output, input * output_dil);
118 
119  return output;
120  }
121 
122 # endif // ! MLN_INCLUDE_ONLY
123 
124  } // end of namespace scribo::primitive::extract
125 
126  } // end of namespace scribo::primitive
127 
128 } // end of namespace scribo
129 
130 
131 #endif // ! SCRIBO_PRIMITIVE_EXTRACT_LINES_H_PATTERN_HH
132