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gradient_internal.cc
1 // Copyright (C) 2008, 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 //
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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
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24 // executable file might be covered by the GNU General Public License.
25 
26 #include <mln/core/image/image2d.hh>
27 #include <mln/core/image/dmorph/sub_image.hh>
28 #include <mln/core/alias/neighb2d.hh>
29 #include <mln/core/var.hh>
30 #include <mln/value/int_u8.hh>
31 #include <mln/make/image2d.hh>
32 
33 #include <mln/debug/iota.hh>
34 
35 #include <mln/morpho/elementary/gradient_internal.hh>
36 
37 
38 int main()
39 {
40  using namespace mln;
41  using value::int_u8;
42 
43  image2d<int_u8> ima(3, 3, 0);
44  debug::iota(ima);
45 
46  {
47  int_u8 ref_[9] = { 0, 1, 1,
48  3, 3, 3,
49  3, 3, 3 };
50  image2d<int_u8> ref = make::image2d(ref_);
51 
52  image2d<int_u8> gra = morpho::elementary::gradient_internal(ima, c4());
53  mln_assertion(gra == ref);
54  }
55 
56  {
57  bool ref_[9] = { 0, 0, 0,
58  0, 1, 1,
59  1, 0, 0 };
60  image2d<bool> ref = make::image2d(ref_);
61 
62  image2d<bool> msk(3, 3, 0);
63  data::fill(msk, pw::value(ima) >= pw::cst(5u));
64  image2d<bool> gra = morpho::elementary::gradient_internal(msk, c4());
65  mln_assertion(gra == ref);
66  }
67 
68 }