Milena (Olena)  User documentation 2.0a Id
 All Classes Namespaces Functions Variables Typedefs Enumerator Groups Pages
labeling/compute.cc
1 // Copyright (C) 2008, 2009 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 #include <mln/core/image/image2d.hh>
27 #include <mln/core/alias/neighb2d.hh>
28 #include <mln/labeling/blobs.hh>
29 #include <mln/labeling/compute.hh>
30 #include <mln/accu/math/count.hh>
31 #include <mln/accu/math/sum.hh>
32 #include <mln/value/int_u8.hh>
33 #include <mln/value/label_8.hh>
34 #include <mln/util/array.hh>
35 
36 int main()
37 {
38  using namespace mln;
39  using value::label_8;
40  using value::int_u8;
41 
42  int_u8 vals[6][5] = {
43  {0, 1, 1, 0, 0},
44  {0, 1, 1, 0, 0},
45  {0, 0, 0, 0, 0},
46  {2, 2, 0, 3, 0},
47  {2, 0, 3, 3, 3},
48  {2, 0, 0, 0, 0}
49  };
50  image2d<int_u8> ima = make::image(vals);
51 
52  label_8 lblvals[6][5] = {
53  {0, 1, 1, 0, 0},
54  {0, 1, 1, 0, 0},
55  {0, 0, 0, 0, 0},
56  {2, 2, 0, 3, 0},
57  {2, 0, 3, 3, 3},
58  {2, 0, 0, 0, 0}
59  };
60  image2d<label_8> lbl = make::image(lblvals);
61  label_8 nlabels = 3;
62 
64  util::array<float> sums = labeling::compute(sum, ima, lbl, nlabels);
65  mln_assertion(sums[0] == 0);
66  mln_assertion(sums[1] == 4);
67  mln_assertion(sums[2] == 8);
68  mln_assertion(sums[3] == 12);
69 
70  sums = labeling::compute(accu::meta::math::sum(), ima, lbl, nlabels);
71  mln_assertion(sums[0] == 0);
72  mln_assertion(sums[1] == 4);
73  mln_assertion(sums[2] == 8);
74  mln_assertion(sums[3] == 12);
75 
77  util::array<unsigned int> counts = labeling::compute(count, lbl, nlabels);
78  mln_assertion(counts[0] == 18);
79  mln_assertion(counts[1] == 4);
80  mln_assertion(counts[2] == 4);
81  mln_assertion(counts[3] == 4);
82 
83  counts = labeling::compute(accu::meta::math::count(), lbl, nlabels);
84  mln_assertion(counts[0] == 18);
85  mln_assertion(counts[1] == 4);
86  mln_assertion(counts[2] == 4);
87  mln_assertion(counts[3] == 4);
88 }