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An Image Processing Platform
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alignments.cc
1 // Copyright (C) 2011 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/io/pbm/all.hh>
28 #include <mln/data/convert.hh>
29 #include <mln/util/timer.hh>
30 
31 #include <scribo/text/extract_lines_wo_merge.hh>
32 #include <scribo/primitive/extract/alignments.hh>
33 #include <scribo/primitive/extract/separators.hh>
34 #include <scribo/primitive/remove/separators.hh>
35 #include <scribo/debug/usage.hh>
36 
37 const char *args_desc[][2] =
38 {
39  { "input.pbm", "A binary image without vertical or horizontal separators." },
40  { "output.pbm", "Output image." },
41  { "enable_debug", "0 or 1 (default 0)" },
42  {0, 0}
43 };
44 
45 
46 int main(int argc, char *argv[])
47 {
48  using namespace mln;
49  using namespace scribo;
50 
51  if (argc != 3 && argc != 4)
52  return scribo::debug::usage(argv,
53  "Extract delimitors based on alignments.",
54  "input.pbm output.pbm [enable_debug]",
55  args_desc);
56 
57  mln_trace("main");
58 
59  if (argc > 3 && atoi(argv[3]))
60  scribo::debug::logger().set_level(scribo::debug::All);
61 
62  float dmax_ratio = 3;
63  unsigned delta_pixel = 3;
64 
66  document<L> doc(argv[1]);
67  doc.open();
68 
69  // Vertical and horizontal separators
70  image2d<bool> input = data::convert(bool(), doc.image());
73  input = preprocessing::denoise_fg(input, c8(), 3);
74  doc.set_binary_image(input);
75 
76  // Extract lines
79  doc.set_paragraphs(scribo::make::paragraph(lines));
80 
82  t.start();
84  res = primitive::extract::alignments(doc, dmax_ratio, delta_pixel);
85  t.stop();
86  std::cout << t << std::endl;
87 
88  mln::io::pbm::save(res.second(), argv[2]);
89 
90 }