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naive/median.hh
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25 
26 #ifndef MLN_DATA_NAIVE_MEDIAN_HH
27 # define MLN_DATA_NAIVE_MEDIAN_HH
28 
32 
33 # include <mln/core/concept/image.hh>
34 # include <mln/core/alias/window2d.hh>
35 # include <mln/data/median.hh>
36 
37 
38 namespace mln
39 {
40 
41  namespace data
42  {
43 
44  namespace naive
45  {
46 
49 
61  template <typename I, typename W, typename O>
62  void median(const Image<I>& input, const Window<W>& win,
63  Image<O>& output);
64 
65 
66 # ifndef MLN_INCLUDE_ONLY
67 
68 
69  namespace impl
70  {
71 
72  template <typename I, typename W, typename O>
73  inline
74  void median(const I& input, const W& win,
75  O& output)
76  {
77  mln_piter(I) p(input.domain());
78  mln_qiter(W) q(win, p);
79  accu::stat::median_h<mln_value(I)> med;
80 
81  for_all(p)
82  {
83  med.init();
84  for_all(q) if (input.has(q))
85  med.take(input(q));
86  output(p) = med.to_result();
87  }
88  }
89 
90 
91  } // end of namespace mln::data::naive::impl
92 
93 
94 
95  // facade
96 
97  template <typename I, typename W, typename O>
98  inline
99  void median(const Image<I>& input, const Window<W>& win,
100  Image<O>& output)
101  {
102  impl::median(exact(input), exact(win), exact(output));
103  }
104 
105 # endif // ! MLN_INCLUDE_ONLY
106 
107  } // end of namespace mln::data::naive
108 
109  } // end of namespace mln::data
110 
111 } // end of namespace mln
112 
113 
114 #endif // ! MLN_DATA_NAIVE_MEDIAN_HH