$extrastylesheet
Olena  User documentation 2.1
An Image Processing Platform
 All Classes Namespaces Functions Variables Typedefs Enumerations Enumerator Friends Groups Pages
subsample.cc
1 // Copyright (C) 2010 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/io/magick/load.hh>
29 #include <mln/io/ppm/save.hh>
30 
31 #include <mln/subsampling/antialiased.hh>
32 
33 #include <mln/value/rgb8.hh>
34 
35 #include <scribo/debug/usage.hh>
36 
37 
38 const char *args_desc[][2] =
39 {
40  { "input.*", "An image." },
41  { "ratio", "Scale ratio." },
42  { "output.ppm", "A color image." },
43  {0, 0}
44 };
45 
46 
47 int main(int argc, char *argv[])
48 {
49  using namespace mln;
50 
51  if (argc != 4)
52  return scribo::debug::usage(argv,
53  "Subsample.",
54  "input.* ratio output.ppm",
55  args_desc);
56 
57  mln_trace("main");
58 
59  typedef image2d<value::rgb8> I;
60  I input;
61  io::magick::load(input, argv[1]);
62 
63  unsigned ratio = atoi(argv[2]);
64  io::ppm::save(mln::subsampling::antialiased(input, ratio), argv[3]);
65 
66 }