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object_groups_size_ratio.hh
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26 
27 #ifndef SCRIBO_FILTER_OBJECT_GROUPS_SIZE_RATIO_HH
28 # define SCRIBO_FILTER_OBJECT_GROUPS_SIZE_RATIO_HH
29 
33 
34 
35 # include <mln/util/array.hh>
36 
37 # include <scribo/core/macros.hh>
38 # include <scribo/core/object_groups.hh>
39 
40 namespace scribo
41 {
42 
43  namespace filter
44  {
45 
46  using namespace mln;
47 
63  template <typename L>
64  object_groups<L>
65  object_groups_size_ratio(const object_groups<L>& groups,
66  float max_size_ratio,
67  float max_invalid_ratio_per_group);
68 
69 # ifndef MLN_INCLUDE_ONLY
70 
71 
72  template <typename L>
73  object_groups<L>
74  object_groups_size_ratio(const object_groups<L>& groups,
75  float max_size_ratio,
76  float max_invalid_ratio_per_group)
77  {
78  mln_trace("scribo::filter::object_groups_size_ratio");
79 
80  mln_precondition(groups.is_valid());
81 
82  const component_set<L>& comps = groups.components();
83 
84  // Counting the number of objects per group with a size ratio >
85  // max_ratio.
87  invalid_object_in_group(groups.nelements(), 0);
88 
89  for_all_comps(i, comps)
90  {
91  if ((comps(i).bbox().height() / comps(i).bbox().width())
92  >= max_size_ratio)
93  ++invalid_object_in_group(groups.group_of(i).id());
94  }
95 
96  object_groups<L> output(groups);
97  for_all_groups(g, groups)
98  if ((invalid_object_in_group(g) / static_cast<float>(groups(g).card())) >= max_invalid_ratio_per_group
99  || !groups(g).is_valid())
100  output(g).invalidate();
101 
102  return output;
103  }
104 
105 
106 # endif // ! MLN_INCLUDE_ONLY
107 
108 
109  } // end of namespace scribo::filter
110 
111 } // end of namespace scribo
112 
113 
114 #endif // ! SCRIBO_FILTER_OBJECT_GROUPS_SIZE_RATIO_HH