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components_small.cc
1 // Copyright (C) 2009, 2010, 2011 EPITA Research and Development
2 // Laboratory (LRDE)
3 //
4 // This file is part of Olena.
5 //
6 // Olena is free software: you can redistribute it and/or modify it under
7 // the terms of the GNU General Public License as published by the Free
8 // Software Foundation, version 2 of the License.
9 //
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12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // General Public License for more details.
14 //
15 // You should have received a copy of the GNU General Public License
16 // along with Olena. If not, see <http://www.gnu.org/licenses/>.
17 //
18 // As a special exception, you may use this file as part of a free
19 // software project without restriction. Specifically, if other files
20 // instantiate templates or use macros or inline functions from this
21 // file, or you compile this file and link it with other files to produce
22 // an executable, this file does not by itself cause the resulting
23 // executable to be covered by the GNU General Public License. This
24 // exception does not however invalidate any other reasons why the
25 // executable file might be covered by the GNU General Public License.
26 
28 
29 #include <iostream>
30 
31 #include <mln/core/image/image2d.hh>
32 #include <mln/core/alias/neighb2d.hh>
33 #include <mln/util/graph.hh>
34 #include <mln/value/label_16.hh>
35 #include <mln/io/pbm/load.hh>
36 #include <mln/literal/colors.hh>
37 #include <scribo/primitive/extract/components.hh>
38 #include <scribo/primitive/group/apply.hh>
39 #include <scribo/primitive/link/with_single_left_link.hh>
40 #include <scribo/primitive/group/from_single_link.hh>
41 #include <scribo/filter/objects_small.hh>
42 
43 #include "tests/data.hh"
44 
45 
46 int main()
47 {
48  using namespace scribo;
49  using namespace mln;
50 
51  std::string img = SCRIBO_IMG_DIR "/text_to_group_and_clean.pbm";
52 
53  image2d<bool> input;
54  io::pbm::load(input, img.c_str());
55 
56  typedef value::label_16 V;
57  typedef image2d<V> L;
58 
59  {
60  V nbboxes;
62  text = primitive::extract::components(input, c8(), nbboxes);
63 
65 
66 
67  mln_assertion(nbboxes == 12u);
68 
70 
71  component_set<L> grouped_comps = primitive::group::apply(groups);
72 
73  mln_assertion(grouped_comps.nelements() == 6u);
74 
76  filtered_comps = scribo::filter::components_small(grouped_comps, 20);
77 
78  unsigned valid_comps = 0;
79  for_all_comps(c, filtered_comps)
80  if (filtered_comps(c).is_valid())
81  ++valid_comps;
82 
83  mln_assertion(valid_comps == 2u);
84  }
85 
86 
87  {
88  V nlabels;
90  nlabels, 20);
91 
92  mln_assertion(nlabels == 8u);
93  }
94 
95 }