DGtal  0.9.4beta
volTrackBoundary.cpp
1 
37 #include <iostream>
40 #include <queue>
41 #include "DGtal/base/Common.h"
42 #include "DGtal/io/viewers/Viewer3D.h"
43 #include "DGtal/io/readers/VolReader.h"
44 #include "DGtal/io/DrawWithDisplay3DModifier.h"
45 #include "DGtal/io/Color.h"
46 #include "DGtal/images/ImageSelector.h"
47 #include "DGtal/images/imagesSetsUtils/SetFromImage.h"
48 #include "DGtal/shapes/Shapes.h"
49 #include "DGtal/helpers/StdDefs.h"
50 #include "DGtal/topology/helpers/Surfaces.h"
52 
54 
55 using namespace std;
56 using namespace DGtal;
57 using namespace Z3i;
58 
60 
61 void usage( int /*argc*/, char** argv )
62 {
63  std::cerr << "Usage: " << argv[ 0 ] << " <fileName.vol> <minT> <maxT>" << std::endl;
64  std::cerr << "\t - displays the boundary of the shape stored in vol file <fileName.vol>." << std::endl;
65  std::cerr << "\t - voxel v belongs to the shape iff its value I(v) follows minT <= I(v) <= maxT." << std::endl;
66 }
67 
68 int main( int argc, char** argv )
69 {
70  if ( argc < 4 )
71  {
72  usage( argc, argv );
73  return 1;
74  }
75  std::string inputFilename = argv[ 1 ];
76  unsigned int minThreshold = atoi( argv[ 2 ] );
77  unsigned int maxThreshold = atoi( argv[ 3 ] );
78 
80  trace.beginBlock( "Reading vol file into an image." );
82  Image image = VolReader<Image>::importVol(inputFilename);
83  DigitalSet set3d (image.domain());
84  SetFromImage<DigitalSet>::append<Image>(set3d, image,
85  minThreshold, maxThreshold);
86  trace.endBlock();
88 
89 
91  trace.beginBlock( "Construct the Khalimsky space from the image domain." );
92  KSpace ks;
93  bool space_ok = ks.init( image.domain().lowerBound(),
94  image.domain().upperBound(), true );
95  if (!space_ok)
96  {
97  trace.error() << "Error in the Khamisky space construction."<<std::endl;
98  return 2;
99  }
100  trace.endBlock();
102 
104  typedef SurfelAdjacency<KSpace::dimension> MySurfelAdjacency;
105  MySurfelAdjacency surfAdj( true ); // interior in all directions.
107 
109  trace.beginBlock( "Extracting boundary by tracking from an initial bel." );
110  KSpace::SCellSet boundary;
111  SCell bel = Surfaces<KSpace>::findABel( ks, set3d, 100000 );
112  Surfaces<KSpace>::trackBoundary( boundary, ks,
113  surfAdj,
114  set3d, bel );
115  trace.endBlock();
117 
119  trace.beginBlock( "Displaying surface in Viewer3D." );
120  QApplication application(argc,argv);
121  Viewer3D<> viewer( ks );
122  viewer.show();
123  viewer << SetMode3D( bel.className(), "Basic" );
124  viewer << CustomColors3D(Color(250, 0, 0 ), Color( 128, 128, 128 ) );
125  unsigned long nbSurfels = 0;
126  for ( KSpace::SCellSet::const_iterator it = boundary.begin(),
127  it_end = boundary.end(); it != it_end; ++it, ++nbSurfels )
128  viewer << *it;
129  viewer << Viewer3D<>::updateDisplay;
130  trace.info() << "nb surfels = " << nbSurfels << std::endl;
131  trace.endBlock();
132  return application.exec();
134 }
135 
void beginBlock(const std::string &keyword="")
DigitalSetSelector< Domain, BIG_DS+HIGH_BEL_DS >::Type DigitalSet
Definition: StdDefs.h:100
Aim: implements association bewteen points lying in a digital domain and values.
Definition: Image.h:69
Trace trace
Definition: Common.h:137
Aim: A utility class for constructing surfaces (i.e. set of (n-1)-cells).
Definition: Surfaces.h:78
KhalimskySpaceND< 2, Integer > KSpace
Definition: StdDefs.h:77
STL namespace.
double endBlock()
Aim: implements methods to read a "Vol" file format.
Definition: VolReader.h:89
DGtal is the top-level namespace which contains all DGtal functions and types.
Aim: Define utilities to convert a digital set into an image.
Definition: SetFromImage.h:63
std::ostream & info()
Structure representing an RGB triple with alpha component.
Definition: Color.h:66
const Domain & domain() const
Definition: Image.h:192
std::ostream & error()
Modifier class in a Display3D stream. Useful to choose your own mode for a given class. Realizes the concept CDrawableWithDisplay3D.