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lines_discontinued.cc
1 // Copyright (C) 2013 EPITA Research and Development Laboratory (LRDE)
2 //
3 // This file is part of Olena.
4 //
5 // Olena is free software: you can redistribute it and/or modify it under
6 // the terms of the GNU General Public License as published by the Free
7 // Software Foundation, version 2 of the License.
8 //
9 // Olena is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 // General Public License for more details.
13 //
14 // You should have received a copy of the GNU General Public License
15 // along with Olena. If not, see <http://www.gnu.org/licenses/>.
16 //
17 // As a special exception, you may use this file as part of a free
18 // software project without restriction. Specifically, if other files
19 // instantiate templates or use macros or inline functions from this
20 // file, or you compile this file and link it with other files to produce
21 // an executable, this file does not by itself cause the resulting
22 // executable to be covered by the GNU General Public License. This
23 // exception does not however invalidate any other reasons why the
24 // executable file might be covered by the GNU General Public License.
25 
26 // \file
27 
28 #include <mln/core/image/image2d.hh>
29 #include <mln/core/alias/neighb2d.hh>
30 #include <mln/win/hline2d.hh>
31 #include <mln/io/pbm/load.hh>
32 #include <mln/value/label_8.hh>
33 #include <mln/make/box2d.hh>
34 #include <scribo/primitive/extract/lines_discontinued.hh>
35 
36 #include "tests/data.hh"
37 
38 
39 int main()
40 {
41  using namespace mln;
42  using namespace scribo;
43 
44  image2d<bool> input;
45  io::pbm::load(input, SCRIBO_IMG_DIR "/lines_discontinued.pbm");
46 
47  typedef value::label_8 V;
48  typedef image2d<V> I;
49 
50  // Horizontal
51  {
52  win::hline2d win(51);
53  V nlines;
55  comps = primitive::extract::lines_discontinued(input, c4(), nlines,
56  win, 3);
57 
58  mln_assertion(comps.nelements() == 2);
59 
60  mln_assertion(comps(1).bbox() == make::box2d(21, 37, 24, 176));
61  mln_assertion(comps(1).mass_center() == point2d(23, 107));
62  mln_assertion(comps(1).card() == 560);
63 
64  mln_assertion(comps(2).bbox() == make::box2d(94, 32, 97, 91));
65  mln_assertion(comps(2).mass_center() == point2d(96, 62));
66  mln_assertion(comps(2).card() == 240);
67  }
68 
69  // Vertical
70  {
71  win::vline2d win(51);
72  V nlines;
74  comps = primitive::extract::lines_discontinued(input, c4(), nlines,
75  win, 3);
76 
77  mln_assertion(comps.nelements() == 3);
78 
79  mln_assertion(comps(1).bbox() == make::box2d(8, 23, 186, 26));
80  mln_assertion(comps(1).mass_center() == point2d(97, 25));
81  mln_assertion(comps(1).card() == 716);
82 
83  mln_assertion(comps(2).bbox() == make::box2d(42, 98, 162, 100));
84  mln_assertion(comps(2).mass_center() == point2d(102, 99));
85  mln_assertion(comps(2).card() == 363);
86 
87  mln_assertion(comps(3).bbox() == make::box2d(57, 137, 173, 144));
88  mln_assertion(comps(3).mass_center() == point2d(115, 141));
89  mln_assertion(comps(3).card() == 936);
90  }
91 }