core/distance.hh
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1 /* -*- mia-c++ -*-
2  *
3  * This file is part of MIA - a toolbox for medical image analysis
4  * Copyright (c) Leipzig, Madrid 1999-2013 Gert Wollny
5  *
6  * MIA is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with MIA; if not, see <http://www.gnu.org/licenses/>.
18  *
19  */
20 
21 #ifndef mia_core_distance_hh
22 #define mia_core_distance_hh
23 
24 #include <vector>
25 #include <algorithm>
26 #include <limits>
27 #include <iterator>
28 
29 #include <mia/core/defines.hh>
30 
32 
42 void EXPORT_CORE distance_transform_inplace(std::vector<float>& r);
43 
44 
45 template <typename InputIterator, typename OutputIterator, typename T>
47  static void apply(InputIterator in_begin, InputIterator in_end, OutputIterator out_begin){
48  std::transform(in_begin, in_end, out_begin, [](float x){ return x*x;});
49  }
50 };
51 
52 template <typename InputIterator, typename OutputIterator>
53 struct __distance_transform_prepare<InputIterator, OutputIterator, bool> {
54  static void apply(InputIterator in_begin, InputIterator in_end, OutputIterator out_begin){
55  std::transform(in_begin, in_end, out_begin,
56  [](bool x){ return x ? 0.0f : std::numeric_limits<float>::max();});
57  }
58 };
59 
60 
77 template <typename InputIterator, typename OutputIterator>
78 void distance_transform_prepare(InputIterator in_begin, InputIterator in_end,
79  OutputIterator out_begin)
80 {
81  typedef typename std::iterator_traits<InputIterator>::value_type in_value_type;
83 }
84 
86 
87 #endif