DGtal 1.3.0
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Functions
volDistanceTraversal.cpp File Reference
#include <iostream>
#include <queue>
#include <QImageReader>
#include "DGtal/base/BasicFunctors.h"
#include "DGtal/topology/CanonicSCellEmbedder.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/graph/DistanceBreadthFirstVisitor.h"
#include "DGtal/topology/DigitalSurface.h"
#include "DGtal/topology/LightImplicitDigitalSurface.h"
#include "DGtal/geometry/volumes/distance/LpMetric.h"
#include "DGtal/io/readers/VolReader.h"
#include "DGtal/io/viewers/Viewer3D.h"
#include "DGtal/io/Color.h"
#include "DGtal/io/colormaps/HueShadeColorMap.h"
#include "DGtal/images/ImageSelector.h"
#include "DGtal/images/imagesSetsUtils/SetFromImage.h"

Go to the source code of this file.

Functions

void usage (int, char **argv)
 
int main (int argc, char **argv)
 

Detailed Description

Author
Jacques-Olivier Lachaud (jacqu.nosp@m.es-o.nosp@m.livie.nosp@m.r.la.nosp@m.chaud.nosp@m.@uni.nosp@m.v-sav.nosp@m.oie..nosp@m.fr ) Laboratory of Mathematics (CNRS, UMR 5127), University of Savoie, France
Date
2012/02/06

An example file named volDistanceTraversal.

This file is part of the DGtal library.

Definition in file volDistanceTraversal.cpp.

Function Documentation

◆ main()

int main ( int  argc,
char **  argv 
)

[volDistanceTraversal-readVol]

[volDistanceTraversal-readVol]

[volDistanceTraversal-KSpace]

[volDistanceTraversal-KSpace]

[volDistanceTraversal-SurfelAdjacency]

[volDistanceTraversal-SurfelAdjacency]

[volDistanceTraversal-SetUpDigitalSurface]

[volDistanceTraversal-SetUpDigitalSurface]

[volDistanceTraversal-ExtractingSurface]

[volDistanceTraversal-ExtractingSurface]

[volDistanceTraversal-DisplayingSurface]

[volDistanceTraversal-DisplayingSurface]

Definition at line 69 of file volDistanceTraversal.cpp.

70{
71 if ( argc < 4 )
72 {
73 usage( argc, argv );
74 return 1;
75 }
76 std::string inputFilename = argv[ 1 ];
77 unsigned int minThreshold = atoi( argv[ 2 ] );
78 unsigned int maxThreshold = atoi( argv[ 3 ] );
79 unsigned int idxP = (argc <= 4) ? 0 : atoi( argv[ 4 ] );
80
82 trace.beginBlock( "Reading vol file into an image." );
84 Image image = VolReader<Image>::importVol(inputFilename);
85 DigitalSet set3d (image.domain());
87 minThreshold, maxThreshold);
90
91
93 trace.beginBlock( "Construct the Khalimsky space from the image domain." );
94 KSpace ks;
95 bool space_ok = ks.init( image.domain().lowerBound(),
96 image.domain().upperBound(), true );
97 if (!space_ok)
98 {
99 trace.error() << "Error in the Khamisky space construction."<<std::endl;
100 return 2;
101 }
102 trace.endBlock();
104
106 typedef SurfelAdjacency<KSpace::dimension> MySurfelAdjacency;
107 MySurfelAdjacency surfAdj( true ); // interior in all directions.
109
111 trace.beginBlock( "Set up digital surface." );
115 SCell bel = Surfaces<KSpace>::findABel( ks, set3d, 100000 );
116 MyDigitalSurfaceContainer* ptrSurfContainer =
117 new MyDigitalSurfaceContainer( ks, set3d, surfAdj, bel );
118 MyDigitalSurface digSurf( ptrSurfContainer ); // acquired
119 trace.endBlock();
120 // Find first bel.
121 MyDigitalSurface::ConstIterator it = digSurf.begin();
122 for ( idxP = idxP % digSurf.size(); idxP != 0; --idxP ) ++it;
123 bel = *it;
125
127 trace.beginBlock( "Extracting boundary by distance tracking from an initial bel." );
128 typedef CanonicSCellEmbedder<KSpace> SCellEmbedder;
129 typedef SCellEmbedder::Value RealPoint;
130 typedef RealPoint::Coordinate Scalar;
131 typedef LpMetric<Space> Distance;
132 using DistanceToPoint = std::function<double(const Space::RealPoint &)>;
135 MyDistanceVisitor;
136 typedef MyDistanceVisitor::Node MyNode;
137 typedef MyDistanceVisitor::Scalar MySize;
138
139 SCellEmbedder embedder( ks );
140 Distance distance(2.0);
141 DistanceToPoint distanceToPoint = std::bind( distance, embedder( bel ), std::placeholders::_1 );
142 VertexFunctor vfunctor( embedder, distanceToPoint );
143 MyDistanceVisitor visitor( digSurf, vfunctor, bel );
144
145 unsigned long nbSurfels = 0;
146 MyNode node;
147 while ( ! visitor.finished() )
148 {
149 node = visitor.current();
150 ++nbSurfels;
151 visitor.expand();
152 }
153 MySize maxDist = node.second;
154 trace.endBlock();
156
158 trace.beginBlock( "Displaying surface in Viewer3D." );
159 QApplication application(argc,argv);
160 Viewer3D<> viewer( ks );
161 viewer.show();
162 HueShadeColorMap<MySize,1> hueShade( 0, maxDist );
163 MyDistanceVisitor visitor2( digSurf, vfunctor, bel );
164 viewer << SetMode3D( bel.className(), "Basic" );
166 << bel;
167 visitor2.expand();
168 std::vector< MyDistanceVisitor::Node > layer;
169 while ( ! visitor2.finished() )
170 {
171 MyNode n = visitor2.current();
172 Color c = hueShade( n.second );
173 viewer << CustomColors3D( Color::Red, c )
174 << n.first;
175 visitor2.expand();
176 }
177 viewer << Viewer3D<>::updateDisplay;
178 trace.info() << "nb surfels = " << nbSurfels << std::endl;
179 trace.endBlock();
180 return application.exec();
182}
Structure representing an RGB triple with alpha component.
Definition: Color.h:68
static const Color Red
Definition: Color.h:416
static const Color White
Definition: Color.h:415
static const Color Black
Definition: Color.h:413
Aim: A model of CDigitalSurfaceContainer which defines the digital surface as the boundary of a given...
Aim: A wrapper class around a STL associative container for storing sets of digital points within som...
Aim: Represents a set of n-1-cells in a nD space, together with adjacency relation between these cell...
DigitalSurfaceContainer::SurfelConstIterator ConstIterator
Aim: This class is useful to perform an exploration of a graph given a starting point or set (called ...
Aim: This class template may be used to (linearly) convert scalar values in a given range into a colo...
Aim: implements association bewteen points lying in a digital domain and values.
Definition: Image.h:70
Aim: This class is a model of CCellularGridSpaceND. It represents the cubical grid as a cell complex,...
bool init(const Point &lower, const Point &upper, bool isClosed)
Specifies the upper and lower bounds for the maximal cells in this space.
Aim: A model of CDigitalSurfaceContainer which defines the digital surface as the boundary of an impl...
Aim: implements l_p metrics.
Definition: LpMetric.h:75
Aim: Implements basic operations that will be used in Point and Vector classes.
Definition: PointVector.h:593
Component Coordinate
Type for Point elements.
Definition: PointVector.h:617
static SCell findABel(const KSpace &K, const PointPredicate &pp, unsigned int nbtries=1000)
Aim: Represent adjacencies between surfel elements, telling if it follows an interior to exterior ord...
void beginBlock(const std::string &keyword="")
std::ostream & error()
std::ostream & info()
double endBlock()
Aim: Define a new Functor from the composition of two other functors.
DigitalSurface< MyDigitalSurfaceContainer > MyDigitalSurface
DigitalSetBoundary< KSpace, DigitalSet > MyDigitalSurfaceContainer
Space::RealPoint RealPoint
Definition: StdDefs.h:170
Trace trace
Definition: Common.h:154
Aim: A trivial embedder for signed cell, which corresponds to the canonic injection of cell centroids...
ImageContainerBySTLVector< Domain, Value > Type
Definition: ImageSelector.h:78
Aim: Define utilities to convert a digital set into an image.
Definition: SetFromImage.h:64
Modifier class in a Display3D stream. Useful to choose your own mode for a given class....
Represents a signed cell in a cellular grid space by its Khalimsky coordinates and a boolean value.
std::string className() const
Return the style name used for drawing this object.
static ImageContainer importVol(const std::string &filename, const Functor &aFunctor=Functor())

References DGtal::DigitalSurface< TDigitalSurfaceContainer >::begin(), DGtal::Trace::beginBlock(), DGtal::Color::Black, DGtal::SignedKhalimskyCell< dim, TInteger >::className(), DGtal::Trace::endBlock(), DGtal::Trace::error(), DGtal::Surfaces< TKSpace >::findABel(), DGtal::VolReader< TImageContainer, TFunctor >::importVol(), DGtal::Trace::info(), DGtal::KhalimskySpaceND< dim, TInteger >::init(), DGtal::Color::Red, DGtal::Viewer3D< TSpace, TKSpace >::show(), DGtal::DigitalSurface< TDigitalSurfaceContainer >::size(), DGtal::trace, and DGtal::Color::White.

◆ usage()

void usage ( int  ,
char **  argv 
)

Definition at line 61 of file volDistanceTraversal.cpp.

62{
63 std::cerr << "Usage: " << argv[ 0 ] << " <fileName.vol> <minT> <maxT> <idxP>" << std::endl;
64 std::cerr << "\t - displays the Euclidean distance to the specified surfel on the boundary of the shape stored in vol file <fileName.vol>." << std::endl;
65 std::cerr << "\t - the shape is defined implicitly: voxel v belongs to the shape iff its value I(v) follows minT < I(v) <= maxT." << std::endl;
66 std::cerr << "\t - starts from the <idxP>-th surfel or first one if invalid." << std::endl;
67}