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Olena  User documentation 2.1
An Image Processing Platform
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pgm16.cc
1 // Copyright (C) 2007, 2008, 2009, 2010 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,
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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/win/rectangle2d.hh>
29 
30 #include <mln/value/int_u8.hh>
31 #include <mln/value/int_u16.hh>
32 
33 #include <mln/io/pgm/load.hh>
34 #include <mln/io/pgm/save.hh>
35 
36 #include <mln/data/transform.hh>
37 
38 #include "tests/data.hh"
39 
40 
41 using namespace mln;
42 
43 struct to16bits : mln::Function_v2v<to16bits>
44 {
45 
46  typedef value::int_u16 result;
47  result operator()(value::int_u8 v) const
48  {
49  result ret(v * 256);
50  return ret;
51  }
52 };
53 
54 struct to8bits : mln::Function_v2v<to8bits>
55 {
56 
57  typedef value::int_u8 result;
58  result operator()(value::int_u16 v) const
59  {
60  result ret(v / 256);
61  return ret;
62  }
63 };
64 
65 
66 int main()
67 {
68  using namespace mln;
69  using value::int_u8;
70  using value::int_u16;
71 
72  {
73  win::rectangle2d rect(51, 51);
74  border::thickness = 52;
75 
76  image2d<int_u8> lena = io::pgm::load<int_u8>(MLN_IMG_DIR "/lena.pgm");
77  image2d<int_u16> out(lena.domain());
78 
79  out = data::transform(lena, to16bits());
80  io::pgm::save(out, "pgm16-out16.pgm");
81 
82  image2d<int_u16> lena2 = io::pgm::load<int_u16>("pgm16-out16.pgm");
83 
84  image2d<int_u8> out2(lena.domain());
85  out2 = data::transform(lena2, to8bits());
86  io::pgm::save(out2, "pgm16-out8.pgm");
87  }
88 
89 
90  {
91  /* FIXME: Is this dead code, or code not working? Be more specific. */
92  // Abort
93 // image2d< value::int_u<8> > a;
94 // io::pgm::load(a, "pgm16-out16.pgm");
95 
97  io::pgm::load(b, "pgm16-out16.pgm");
98  }
99 
100 }