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objects_small.cc
1 // Copyright (C) 2009, 2010 EPITA Research and Development Laboratory
2 // (LRDE)
3 //
4 // This file is part of Olena.
5 //
6 // Olena is free software: you can redistribute it and/or modify it under
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8 // Software Foundation, version 2 of the License.
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13 // General Public License for more details.
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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
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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 
27 #include <mln/core/image/image2d.hh>
28 #include <mln/core/alias/neighb2d.hh>
29 #include <mln/data/convert.hh>
30 #include <mln/io/pbm/all.hh>
31 #include <mln/value/label_16.hh>
32 
33 #include <scribo/primitive/extract/components.hh>
34 #include <scribo/filter/objects_small.hh>
35 #include <scribo/debug/usage.hh>
36 
37 const char *args_desc[][2] =
38 {
39  { "input.pbm", "A binary image. 'True' for objects, 'False'\
40 for the background." },
41  { "min_area", "The minimum object area value. Objects with an area less than \
42 or equal to this value are removed." },
43  {0, 0}
44 };
45 
46 int main(int argc, char *argv[])
47 {
48  using namespace mln;
49  using namespace scribo;
50 
51  if (argc != 4)
52  return scribo::debug::usage(argv,
53  "Filter too small objects",
54  "input.pbm min_area output.pbm",
55  args_desc);
56 
57  mln_trace("main");
58 
59  typedef image2d<bool> I;
60  I input;
61  io::pbm::load(input, argv[1]);
62 
63  typedef value::label_16 V;
64  V nobjects;
65  typedef image2d<V> L;
66  component_set<L> comps
67  = scribo::primitive::extract::components(input, c8(), nobjects);
68 
70  filtered = scribo::filter::components_small(comps, atoi(argv[2]));
71  io::pbm::save(data::convert(bool(), filtered.labeled_image()), argv[3]);
72 
73 
74 }