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An Image Processing Platform
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filter.cc
1 // Copyright (C) 2009, 2014 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/pw/all.hh>
29 
30 #include <mln/value/int_u8.hh>
31 #include <mln/io/pgm/load.hh>
32 #include <mln/io/pgm/save.hh>
33 
34 #include <mln/morpho/tree/component_tree.hh>
35 #include <mln/morpho/tree/compute_attribute_image.hh>
36 #include <mln/morpho/attribute/card.hh>
37 
38 #include <mln/morpho/tree/filter/all.hh>
39 #include <mln/morpho/tree/propagate_representative.hh>
40 
41 #include <mln/morpho/closing/area.hh>
42 
43 #include "tests/data.hh"
44 
45 #include <iostream>
46 
47 int main()
48 {
49  using namespace mln;
50  using value::int_u8;
51 
52 
53  typedef image2d<int_u8> I;
54  I input;
55  io::pgm::load(input, MLN_IMG_DIR "/tiny.pgm");
56 
57  typedef p_array< mln_site_(I) > S;
58  typedef morpho::tree::data<I,S> tree_t;
59 
60  tree_t tree = morpho::tree::min_tree(input, c4());
61 
62  // Test with increasing attribute -> area closing.
63  {
64  typedef morpho::attribute::card<I> attribute_t;
65  typedef mln_ch_value_(I, unsigned) A;
66 
67  A a = morpho::tree::compute_attribute_image(attribute_t (), tree);
68 
69  unsigned lambda = 5;
70  typedef fun::geq_v2b_expr_< pw::value_<image2d<unsigned> >,
71  pw::cst_<unsigned> > predicate_t;
72  predicate_t predicate = pw::value(a) >= pw::cst(lambda);
73  I ref = morpho::closing::area(input, c4(), lambda);
74 
75  {
76  I out = duplicate(input);
77  morpho::tree::filter::min(tree, out, predicate);
79  mln_assertion(out == ref);
80  }
81 
82  {
83  I out = duplicate(input);
84  morpho::tree::filter::max(tree, out, predicate);
86  mln_assertion(out == ref);
87  }
88 
89  {
90  I out = duplicate(input);
91  morpho::tree::filter::direct(tree, out, predicate);
93  mln_assertion(out == ref);
94  }
95 
96  // Not for subtractive strategy (removal procedure differs).
97  }
98 }