vigra - vigra/seg_to_seeds.hxx Source File

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seg_to_seeds.hxx |

1 /************************************************************************/
2 /* */
3 /* Copyright 2012-2013 by Ullrich Koethe */
4 /* */
5 /* This file is part of the VIGRA computer vision library. */
6 /* The VIGRA Website is */
7 /* http://hci.iwr.uni-heidelberg.de/vigra/ */
8 /* Please direct questions, bug reports, and contributions to */
9 /* ullrich.koethe@iwr.uni-heidelberg.de or */
10 /* vigra@informatik.uni-hamburg.de */
11 /* */
12 /* Permission is hereby granted, free of charge, to any person */
13 /* obtaining a copy of this software and associated documentation */
14 /* files (the "Software"), to deal in the Software without */
15 /* restriction, including without limitation the rights to use, */
16 /* copy, modify, merge, publish, distribute, sublicense, and/or */
17 /* sell copies of the Software, and to permit persons to whom the */
18 /* Software is furnished to do so, subject to the following */
19 /* conditions: */
20 /* */
21 /* The above copyright notice and this permission notice shall be */
22 /* included in all copies or substantial portions of the */
23 /* Software. */
24 /* */
25 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND */
26 /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES */
27 /* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND */
28 /* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT */
29 /* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, */
30 /* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING */
31 /* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR */
32 /* OTHER DEALINGS IN THE SOFTWARE. */
33 /* */
34 /************************************************************************/
35
36
37 #ifndef VIGRA_SEG_TO_SEED_HXX
38 #define VIGRA_SEG_TO_SEED_HXX
39
40 #include "multi_array.hxx"
41 #include "multi_gridgraph.hxx"
42 namespace vigra {
43
44
45 template<unsigned int DIM, class LABEL_TYPE,class LABEL_TYPE_OUT>
46 void shrinkLabels(
47 MultiArrayView<DIM,LABEL_TYPE> labels,
48 const size_t shrinkNpixels,
49 MultiArrayView<DIM,LABEL_TYPE_OUT> shrinkedLabels
50 ){
51 shrinkedLabels = labels;
52
53 typedef GridGraph<DIM, undirected_tag> Graph;
54 typedef typename Graph::Node Node;
55 //typedef typename Graph::Edge Edge;
56 typedef typename Graph::NodeIt graph_scanner;
57 typedef typename Graph::OutArcIt neighbor_iterator;
58
59 const Graph g(labels.shape());
60
61 // INITAL LOOP
62 for (graph_scanner n(g); n != lemon::INVALID; ++n){
63 const Node node(*n);
64 for (neighbor_iterator arc(g, node); arc != lemon::INVALID; ++arc){
65 const Node otherNode = g.target(arc);
66
67 if(labels[node]!=labels[otherNode]){
68 shrinkedLabels[node]=0;
69 shrinkedLabels[otherNode]=0;
70 }
71 }
72 }
73
74 MultiArray<DIM,bool> visited(labels.shape());
75 for(size_t r=0;r<shrinkNpixels-1;++r){
76 std::fill(visited.begin(),visited.end(),false);
77 for (graph_scanner n(g); n != lemon::INVALID; ++n){
78 const Node node(*n);
79 if(!visited[n] && shrinkedLabels[node]==0){
80 for (neighbor_iterator arc(g, node); arc != lemon::INVALID; ++arc){
81 const Node otherNode = g.target(arc);
82 shrinkedLabels[otherNode]=0;
83 visited[otherNode]=true;
84 }
85 }
86 }
87 }
88 }
89
90
91 } // end namespace vigra
92
93 #endif // VIGRA_SEG_TO_SEED_HXX

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de) Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany | html generated using doxygen and Python vigra 1.11.1 (Fri May 19 2017)