$extrastylesheet
Olena  User documentation 2.1
An Image Processing Platform
 All Classes Namespaces Functions Variables Typedefs Enumerations Enumerator Friends Groups Pages
labeling/compute.cc
1 // Copyright (C) 2008, 2009, 2013 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 //
10 // Olena is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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 
27 #include <mln/core/image/image2d.hh>
28 #include <mln/core/alias/neighb2d.hh>
29 #include <mln/labeling/blobs.hh>
30 #include <mln/labeling/compute.hh>
31 #include <mln/accu/math/count.hh>
32 #include <mln/accu/math/sum.hh>
33 #include <mln/value/int_u8.hh>
34 #include <mln/value/label_8.hh>
35 #include <mln/util/array.hh>
36 
37 
38 /* Clang 3.0 wrongly complains about `label_8'
39  (i.e. `mln::value::label<8>') being an incomplete type when it first
40  encounters it (when the array `lblvals' is defined in `main'
41  below.). Clang 3.1 and above do not exhibit this behavior.
42 
43  Instantiate mln::value::label<8> explicitly to work around this
44  bug. */
45 template struct mln::value::label<8>;
46 
47 
48 int main()
49 {
50  using namespace mln;
51  using value::label_8;
52  using value::int_u8;
53 
54  int_u8 vals[6][5] = {
55  {0, 1, 1, 0, 0},
56  {0, 1, 1, 0, 0},
57  {0, 0, 0, 0, 0},
58  {2, 2, 0, 3, 0},
59  {2, 0, 3, 3, 3},
60  {2, 0, 0, 0, 0}
61  };
62  image2d<int_u8> ima = make::image(vals);
63 
64  label_8 lblvals[6][5] = {
65  {0, 1, 1, 0, 0},
66  {0, 1, 1, 0, 0},
67  {0, 0, 0, 0, 0},
68  {2, 2, 0, 3, 0},
69  {2, 0, 3, 3, 3},
70  {2, 0, 0, 0, 0}
71  };
72  image2d<label_8> lbl = make::image(lblvals);
73  label_8 nlabels = 3;
74 
76  util::array<float> sums = labeling::compute(sum, ima, lbl, nlabels);
77  mln_assertion(sums[0] == 0);
78  mln_assertion(sums[1] == 4);
79  mln_assertion(sums[2] == 8);
80  mln_assertion(sums[3] == 12);
81 
82  sums = labeling::compute(accu::meta::math::sum(), ima, lbl, nlabels);
83  mln_assertion(sums[0] == 0);
84  mln_assertion(sums[1] == 4);
85  mln_assertion(sums[2] == 8);
86  mln_assertion(sums[3] == 12);
87 
89  util::array<unsigned int> counts = labeling::compute(count, lbl, nlabels);
90  mln_assertion(counts[0] == 18);
91  mln_assertion(counts[1] == 4);
92  mln_assertion(counts[2] == 4);
93  mln_assertion(counts[3] == 4);
94 
95  counts = labeling::compute(accu::meta::math::count(), lbl, nlabels);
96  mln_assertion(counts[0] == 18);
97  mln_assertion(counts[1] == 4);
98  mln_assertion(counts[2] == 4);
99  mln_assertion(counts[3] == 4);
100 }