testDistanceTransformationMetrics.cpp File Reference

#include <iostream>
#include "DGtal/base/Common.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/geometry/volumes/distance/DistanceTransformation.h"
#include "DGtal/geometry/volumes/distance/ExactPredicateLpSeparableMetric.h"
#include "DGtal/geometry/volumes/distance/InexactPredicateLpSeparableMetric.h"
#include "DGtal/images/ImageContainerBySTLVector.h"
#include "DGtal/kernel/sets/DigitalSetBySTLSet.h"

Go to the source code of this file.

Functions
template<typename Image >
void	randomSeeds (Image &input, const unsigned int nb, const int value)
template<typename Image , typename Pred , typename Metric >
bool	checkVoronoi (Image &result, Pred &pointPredicate, Metric &metric)
template<typename Space , int norm>
bool	testCompareExactBruteForce (unsigned int size, unsigned int nb)
template<typename Space >
bool	testCompareInexactBruteForce (double norm, unsigned int size, unsigned int nb)
int	main (int argc, char **argv)

Detailed Description

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Author

David Coeurjolly (david.nosp@m..coe.nosp@m.urjol.nosp@m.ly@l.nosp@m.iris..nosp@m.cnrs.nosp@m..fr ) Laboratoire d'InfoRmatique en Image et Systèmes d'information - LIRIS (CNRS, UMR 5205), CNRS, France

Date

2012/12/30

Functions for testing class DistanceTransformation on several metrics.

This file is part of the DGtal library.

Definition in file testDistanceTransformationMetrics.cpp.

Function Documentation

checkVoronoi()

template<typename Image , typename Pred , typename Metric >

bool checkVoronoi	(	Image &	result,
		Pred &	pointPredicate,
		Metric &	metric
	)

Definition at line 68 of file testDistanceTransformationMetrics.cpp.

{
  typedef typename Image::Domain Domain;
  
  for(typename Domain::ConstIterator it = result.domain().begin(),
          itend=result.domain().end();
        it != itend; ++it)
  {
    typename Metric::Value dist = result(*it);
    
    for(typename Domain::ConstIterator itbis = result.domain().begin(),
        itendbis=result.domain().end();
        itbis != itendbis; ++itbis)
    {
      if (!pointPredicate(*itbis) && (metric(*it, *itbis) < dist))
      {
        trace.error()<< "Error in Voronoi map at "<< *it<<" computed="<<dist<<" but find="<<metric(*it, *itbis) << std::endl;
        return false;
      }
    }
  }
  return true;
}

References DGtal::Trace::error(), and DGtal::trace.

Referenced by testCompareExactBruteForce(), and testCompareInexactBruteForce().

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 178 of file testDistanceTransformationMetrics.cpp.

{
  trace.beginBlock ( "Testing class DistanceTransformationMetrics" );
  trace.info() << "Args:";
  for ( int i = 0; i < argc; ++i )
    trace.info() << " " << argv[ i ];
  trace.info() << endl;
 
  bool res = testCompareExactBruteForce<Z2i::Space, 2>(16, 8)
  && testCompareExactBruteForce<Z2i::Space, 1>(16, 8)
  && testCompareExactBruteForce<Z3i::Space, 2>(16, 8)
  && testCompareExactBruteForce<Z2i::Space, 4>(16, 8)
  && testCompareInexactBruteForce<Z2i::Space>(2.0,16, 8) 
  && testCompareInexactBruteForce<Z2i::Space>(1.33,16, 8)
  && testCompareInexactBruteForce<Z2i::Space>(2.6,16, 8) 
  && testCompareInexactBruteForce<Z3i::Space>(2.44,10, 5)
  && testCompareInexactBruteForce<Z3i::Space>(12.3,10, 5); 
  trace.emphase() << ( res ? "Passed." : "Error." ) << endl;
  trace.endBlock();
  return res ? 0 : 1;
}

References DGtal::Trace::beginBlock(), DGtal::Trace::emphase(), DGtal::Trace::endBlock(), DGtal::Trace::info(), and DGtal::trace.

randomSeeds()

template<typename Image >

void randomSeeds	(	Image &	input,
		const unsigned int	nb,
		const int	value
	)

Definition at line 47 of file testDistanceTransformationMetrics.cpp.

{
  typename Image::Point p, low = input.domain().lowerBound(), up = input.domain().upperBound();
  typename Image::Vector ext;
  
  for (Dimension i = 0; i < Image::Domain::dimension; i++)
    ext[i] = up[i] - low[i] + 1;
  
  
  for (unsigned int k = 0 ; k < nb; k++)
  {
    for (unsigned int dim = 0; dim < Image::dimension; dim++)
    {
      p[dim] = rand() % (ext[dim]) +  low[dim];
    }
    input.setValue(p, value);
  }
}

References dim.

testCompareExactBruteForce()

template<typename Space , int norm>

bool testCompareExactBruteForce	(	unsigned int	size,
		unsigned int	nb
	)

Definition at line 94 of file testDistanceTransformationMetrics.cpp.

{
  trace.beginBlock("Checking Exact/Inexct predicate metrics");
  typedef ExactPredicateLpSeparableMetric<Space, norm> MetricEx;
  typedef HyperRectDomain<Space> Domain;
  typedef typename Space::Point Point;
  typedef DigitalSetBySTLSet<Domain> Set;
  typedef functors::NotPointPredicate<Set> NegPredicate;
  
  Point low=Point::diagonal(0),
  up=Point::diagonal(size);
  
  Domain domain(low,up);
  Set set(domain);
  
  for(unsigned int i = 0; i<nb; ++i)
  {
    Point p;
    for(unsigned int dim=0;  dim<Space::dimension;++dim)
      p[dim]  = rand() % size;
    set.insert(p);
  }
  
  trace.info()<< "Testing metrics "<<MetricEx()<<std::endl;
  trace.info()<< "Testing space dimension "<<Space::dimension<<std::endl;
  trace.info()<< "Inserting "<<set.size() << " points."<<std::endl;
  
  NegPredicate negPred(set);
  
  typedef DistanceTransformation<Space, NegPredicate, MetricEx> DTEx;
  MetricEx metricEx;
  DTEx dtex(&domain, &negPred, &metricEx);
  
  bool res=checkVoronoi(dtex, negPred, metricEx);
  
  trace.endBlock();
  return res;
}

References DGtal::Trace::beginBlock(), checkVoronoi(), dim, DGtal::SpaceND< dim, TInteger >::dimension, domain, DGtal::Trace::endBlock(), DGtal::Trace::info(), and DGtal::trace.

testCompareInexactBruteForce()

template<typename Space >

bool testCompareInexactBruteForce	(	double	norm,
		unsigned int	size,
		unsigned int	nb
	)

Definition at line 136 of file testDistanceTransformationMetrics.cpp.

{
  trace.beginBlock("Checking Exact/Inexct predicate metrics");
  typedef InexactPredicateLpSeparableMetric<Space> MetricInex;
  typedef HyperRectDomain<Space> Domain;
  typedef typename Space::Point Point;
  typedef DigitalSetBySTLSet<Domain> Set;
  typedef functors::NotPointPredicate<Set> NegPredicate;
  
  Point low=Point::diagonal(0),
  up=Point::diagonal(size);
  
  Domain domain(low,up);
  Set set(domain);
  
  for(unsigned int i = 0; i<nb; ++i)
  {
    Point p;
    for(unsigned int dim=0;  dim<Space::dimension;++dim)
      p[dim]  = rand() % size;
    set.insert(p);
  }
  
  trace.info()<< "Testing metrics "<<MetricInex(norm)<<std::endl;
  trace.info()<< "Testing space dimension "<<Space::dimension<<std::endl;
  trace.info()<< "Inserting "<<set.size() << " points."<<std::endl;
  
  NegPredicate negPred(set);
  
  typedef DistanceTransformation<Space, NegPredicate, MetricInex> DTIn;
  MetricInex metricInex(norm);
  DTIn dtinex(&domain, &negPred, &metricInex);
  
  bool res=checkVoronoi(dtinex, negPred, metricInex);
  
  trace.endBlock();
  return res;
}

References DGtal::Trace::beginBlock(), checkVoronoi(), dim, DGtal::SpaceND< dim, TInteger >::dimension, domain, DGtal::Trace::endBlock(), DGtal::Trace::info(), and DGtal::trace.