$extrastylesheet
Olena  User documentation 2.1
An Image Processing Platform
 All Classes Namespaces Functions Variables Typedefs Enumerations Enumerator Friends Groups Pages
neighborhood.cc
1 // Copyright (C) 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 
29 
30 #include <mln/core/image/image2d.hh>
31 #include <mln/labeling/blobs.hh>
32 #include <mln/labeling/colorize.hh>
33 #include <mln/value/rgb8.hh>
34 #include <mln/io/ppm/save.hh>
35 
36 #include <mln/io/pbm/load.hh>
37 #include <mln/make/neighb2d.hh>
38 #include <mln/make/double_neighb2d.hh>
39 
40 
41 
42 template <typename N>
43 void labelize(const mln::image2d<bool>& pic,
44  const N& nbh,
45  const std::string& filename)
46 {
47  using namespace mln;
48  using value::rgb8;
49  unsigned n;
50  image2d<unsigned> lab = labeling::blobs(pic, nbh, n);
51  image2d<rgb8> out = labeling::colorize(rgb8(), lab, n);
52  io::ppm::save(out, filename);
53 }
54 
55 
56 bool chess(const mln::point2d& p)
57 {
58  return (p.row() + p.col()) % 2 == 0;
59 }
60 
61 bool top_right(const mln::point2d& p)
62 {
63  return p.col() >= p.row();
64 }
65 
66 
67 int main()
68 {
69  using namespace mln;
70 
71  image2d<bool> pic = io::pbm::load("drawing.pbm");
72 
73 
74  // Classical 2D neighborhoods.
75 
76  labelize(pic, c4(), "c4.ppm");
77  labelize(pic, c8(), "c8.ppm");
78 
79 
80  // A user-defined simple neighborhood.
81 
82  bool horiz[] = { 0, 0, 0,
83  1, 0, 1,
84  0, 0, 0 };
85  labelize(pic, make::neighb2d(horiz), "c2.ppm");
86 
87 
88  // Another user-defined simple neighborhood.
89 
90  bool tilt[] = { 1, 1, 0,
91  0, 0, 0,
92  0, 1, 1 };
93  labelize(pic, make::neighb2d(tilt), "cZ.ppm");
94 
95 
96  // A user-defined double-neighborhood.
97 
98  bool nbh1[] = { 1, 1, 0,
99  1, 0, 1,
100  0, 1, 1 };
101 
102  bool nbh2[] = { 0, 1, 1,
103  1, 0, 1,
104  1, 1, 0 };
105  labelize(pic, make::double_neighb2d(chess, nbh1, nbh2), "c6.ppm");
106 
107 
108  // Another user-defined double-neighborhood.
109 
110  labelize(pic, make::double_neighb2d(top_right, nbh1, nbh2), "cX.ppm");
111 }