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objects_size_ratio.hh
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26 
27 #ifndef SCRIBO_FILTER_OBJECTS_SIZE_RATIO_HH
28 # define SCRIBO_FILTER_OBJECTS_SIZE_RATIO_HH
29 
33 
34 # include <mln/core/concept/function.hh>
35 
36 # include <scribo/core/component_set.hh>
37 
38 
39 namespace scribo
40 {
41 
42  namespace filter
43  {
44  using namespace mln;
45 
55  //
56  template <typename L>
57  component_set<L>
58  objects_size_ratio(const component_set<L>& comps,
59  float min_size_ratio);
60 
61 
62 # ifndef MLN_INCLUDE_ONLY
63 
64 
65  namespace internal
66  {
67 
68 
71  //
72  template <typename L>
73  struct components_size_ratio_filter
74  : Function_v2b< components_size_ratio_filter<L> >
75  {
76  components_size_ratio_filter(const component_set<L>& comps,
77  float min_size_ratio)
78  : comps_(comps), min_size_ratio_(min_size_ratio)
79  {
80  }
81 
82  bool operator()(const mln_value(L)& l) const
83  {
84  if (l == literal::zero)
85  return false;
86  return (comps_(l).bbox().height() / static_cast<float>(comps_(l).bbox().width())) >= min_size_ratio_;
87  }
88 
90  component_set<L> comps_;
91 
93  float min_size_ratio_;
94  };
95 
96 
97  } // end of namespace scribo::filter::internal
98 
99 
100 
101  template <typename L>
102  component_set<L>
103  objects_size_ratio(const component_set<L>& comps,
104  float min_size_ratio)
105  {
106 
107  mln_trace("scribo::primitive::objects_size_ratio");
108 
109  typedef internal::components_size_ratio_filter<L> func_t;
110  func_t has_valid_size_ratio(comps, min_size_ratio);
111 
112  component_set<L> output = comps.duplicate();
113  output.update_tags(has_valid_size_ratio, component::Ignored);
114 
115  return output;
116  }
117 
118 
119 # endif // ! MLN_INCLUDE_ONLY
120 
121  } // end of namespace scribo::filter
122 
123 } // end of namespace scribo
124 
125 
126 #endif // ! SCRIBO_FILTER_OBJECTS_SIZE_RATIO_HH