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DGtal 2.0.0
testSphereFitting.cpp
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29
31#include <iostream>
32#include "DGtal/base/Common.h"
33#include "DGtal/helpers/StdDefs.h"
34#include "DGtal/base/BasicFunctors.h"
35#include "DGtal/graph/GraphVisitorRange.h"
36#include "DGtal/io/boards/Board2D.h"
37#include "DGtal/io/Color.h"
38#include "DGtal/io/colormaps/GradientColorMap.h"
39
40#include "DGtal/shapes/Shapes.h"
41#include "DGtal/shapes/implicit/ImplicitBall.h"
42#include "DGtal/shapes/GaussDigitizer.h"
43
44#include "DGtal/topology/CanonicSCellEmbedder.h"
45#include "DGtal/graph/DistanceBreadthFirstVisitor.h"
46#include "DGtal/geometry/volumes/distance/LpMetric.h"
47#include "DGtal/geometry/surfaces/estimation/LocalEstimatorFromSurfelFunctorAdapter.h"
48#include "DGtal/geometry/surfaces/estimation/estimationFunctors/BasicEstimatorFromSurfelsFunctors.h"
49#include "DGtal/topology/LightImplicitDigitalSurface.h"
50#include "DGtal/geometry/surfaces/estimation/estimationFunctors/SphereFittingEstimator.h"
51#include "DGtal/geometry/surfaces/estimation/estimationFunctors/ElementaryConvolutionNormalVectorEstimator.h"
52#include "DGtal/geometry/surfaces/estimation/EstimatorCache.h"
54
55using namespace std;
56using namespace DGtal;
57
59// Functions for testing class LocalEstimatorFromFunctorAdapter.
61
62
68{
69 unsigned int nbok = 0;
70 unsigned int nb = 0;
71 trace.beginBlock ( "Testing init ..." );
72
73 using namespace Z3i;
74
75 trace.beginBlock("Creating Surface");
76 Point p1( -20, -20, -20 );
77 Point p2( 20, 20, 20 );
78
79 ImplicitBall<Z3i::Space> shape( RealPoint(6.0,0,0), 4);
81 Gauss gauss;
82 gauss.attach(shape);
83 gauss.init(p1, p2, 1);
84
85 typedef LightImplicitDigitalSurface<KSpace, Gauss > SurfaceContainer;
87 typedef Surface::Surfel Surfel;
88
89
90 KSpace K;
91 nbok += K.init( p1, p2, true ) ? 1 : 0;
92 nb++;
93 trace.info() << "(" << nbok << "/" << nb << ") "
94 << "K.init() is ok" << std::endl;
95 Surfel bel = Surfaces<KSpace>::findABel( K, gauss, 10000 );
96 SurfaceContainer* surfaceContainer = new SurfaceContainer
97 ( K, gauss, SurfelAdjacency<KSpace::dimension>( true ), bel );
98 Surface surface( surfaceContainer ); // acquired
99 CanonicSCellEmbedder<KSpace> embedder(surface.container().space());
100 trace.endBlock();
101
102 trace.beginBlock("Normal vector field computation");
105 FunctorNormal,
106 DGtal::functors::GaussianKernel> ReporterNormal;
107 typedef EstimatorCache<ReporterNormal> NormalCache;
108
109 //estimator
110 DGtal::functors::GaussianKernel gaussKernelFunc(5.0);
111 FunctorNormal functorNormal(embedder, 1.0);
112 ReporterNormal reporterNormal;
113 reporterNormal.attach(surface);
114 LpMetric<Z3i::Space> l2(2.0);
115 reporterNormal.setParams(l2, functorNormal, gaussKernelFunc, 5.0);
116
117 //caching normal field
118 NormalCache normalCache(reporterNormal);
119 normalCache.init( 1, surface.begin(), surface.end());
120 trace.info() << "Normal vector field cached... "<< normalCache << std::endl;
121 trace.endBlock();
122
123 trace.beginBlock("Creating sphere fitting adapter from normal vector field");
125 typedef functors::ConstValue< double > ConvFunctor;
127
128 Functor fitter(embedder,1.0, 5.0, normalCache);
129 ConvFunctor convFunc(1.0);
130 Reporter reporter;
131 reporter.attach(surface);
132 reporter.setParams(l2, fitter , convFunc, 15.0);
133
134 reporter.init(1, surface.begin(), surface.end());
135 for(Surface::ConstIterator it = surface.begin(), ite=surface.end(); it!=ite; ++it)
136 {
137 Functor::Quantity val = reporter.eval( it );
138 trace.info() << "Fitting = "<<val.center <<" rad="<<val.radius<<std::endl;
139 }
140 trace.endBlock();
141
142
143 trace.endBlock();
144
145 nbok += true ? 1 : 0;
146 nb++;
147 trace.info() << "(" << nbok << "/" << nb << ") "
148 << "true == true" << std::endl;
149
150 return nbok == nb;
151}
152
154// Standard services - public :
155
156int main( int argc, char** argv )
157{
158 trace.beginBlock ( "Testing class SphereFitting" );
159 trace.info() << "Args:";
160 for ( int i = 0; i < argc; ++i )
161 trace.info() << " " << argv[ i ];
162 trace.info() << endl;
163
164 bool res = testFitting(); // && ... other tests
165 trace.emphase() << ( res ? "Passed." : "Error." ) << endl;
166 trace.endBlock();
167 return res ? 0 : 1;
168}
169// //
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 adapts any local surface estimator to cache the estimated values in a associative con...
Aim: A class for computing the Gauss digitization of some Euclidean shape, i.e. its intersection with...
void attach(ConstAlias< EuclideanShape > shape)
Aim: model of CEuclideanOrientedShape and CEuclideanBoundedShape concepts to create a ball in nD....
Aim: A model of CDigitalSurfaceContainer which defines the digital surface as the boundary of an impl...
Aim: this class adapts any local functor on digital surface element to define a local estimator....
Aim: implements l_p metrics.
Definition LpMetric.h:75
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...
Aim: Define a simple functor that returns a constant value (0 by default).
Aim: Estimates normal vector by convolution of elementary normal vector to adjacent surfel.
Aim: Use Ponca library to perform a local sphere fitting.
CountedPtr< SH3::DigitalSurface > surface
SH3::DigitalSurface Surface
Z3i this namespace gathers the standard of types for 3D imagery.
DGtal is the top-level namespace which contains all DGtal functions and types.
Trace trace
STL namespace.
Aim: A trivial embedder for signed cell, which corresponds to the canonic injection of cell centroids...
Aim: defines a functor on double numbers which corresponds to a Gaussian convolution kernel....
int main()
Definition testBits.cpp:56
KSpace K
bool testFitting()
PointVector< 3, double > RealPoint