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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkNeighborhoodSamplerTest.cxx,v $
Language: C++
Date: $Date: 2005-07-26 23:36:40 $
Version: $Revision: 1.7 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include "itkWin32Header.h"
#include <fstream>
#include "itkArray.h"
#include "itkListSample.h"
#include "itkSubsample.h"
#include "itkNeighborhoodSampler.h"
#define NO_OF_DIMENSIONS 2
typedef double ValueType ;
int itkNeighborhoodSamplerTest(int , char* [])
{
namespace stat = itk::Statistics ;
typedef itk::Vector< ValueType, NO_OF_DIMENSIONS > MeasurementVectorType ;
typedef stat::ListSample< MeasurementVectorType > SampleType ;
SampleType::Pointer sample = SampleType::New() ;
sample->SetMeasurementVectorSize( NO_OF_DIMENSIONS );
double radius = 1.0 ;
// add four vectors within the radius
MeasurementVectorType tempVector ;
tempVector[0] = 0.0 ;
tempVector[1] = 0.5 ;
sample->PushBack(tempVector) ;
tempVector[0] = 0.0 ;
tempVector[1] = -0.5 ;
sample->PushBack(tempVector) ;
tempVector[0] = 0.5 ;
tempVector[1] = 0.0 ;
sample->PushBack(tempVector) ;
tempVector[0] = -0.5 ;
tempVector[1] = 0.0 ;
sample->PushBack(tempVector) ;
// add four vectors outside of the radius
tempVector[0] = 0.0 ;
tempVector[1] = 2.0 ;
sample->PushBack(tempVector) ;
tempVector[0] = 0.0 ;
tempVector[1] = -2.0 ;
sample->PushBack(tempVector) ;
tempVector[0] = 2.0 ;
tempVector[1] = 0.0 ;
sample->PushBack(tempVector) ;
tempVector[0] = -2.0 ;
tempVector[1] = 0.0 ;
sample->PushBack(tempVector) ;
typedef stat::NeighborhoodSampler< SampleType > SamplerType ;
typedef SamplerType::CenterType CenterType;
CenterType center( NO_OF_DIMENSIONS );
center.Fill( 0.0 );
SamplerType::Pointer sampler = SamplerType::New() ;
sampler->SetInputSample(sample) ;
sampler->SetCenter(¢er) ;
sampler->SetRadius(&radius) ;
sampler->Update() ;
SamplerType::OutputType::Pointer output = sampler->GetOutput() ;
if ( output->Size() != 4 )
{
std::cout
<< "Test failed: The output size should be 4. The actual size ="
<< output->Size() << std::endl;
return EXIT_FAILURE;
}
for ( unsigned int i = 0 ; i < 4 ; i++ )
{
if ( output->GetInstanceIdentifier(i) != i )
{
std::cout << "Test failed." << std::endl;
return EXIT_FAILURE;
}
}
std::cout << "Test succeeded." << std::endl;
return EXIT_SUCCESS ;
}
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