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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkMembershipSampleGeneratorTest.cxx,v $
Language: C++
Date: $Date: 2005-07-26 15:55:14 $
Version: $Revision: 1.6 $
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 "itkListSample.h"
#include "itkMembershipSample.h"
#include "itkMembershipSampleGenerator.h"
#include "itkVector.h"
int itkMembershipSampleGeneratorTest( int, char* [] )
{
// The following code snippet will create a \code{ListSample} object
// with three-component float measurement vectors and put three
// measurement vectors in tht \code{ListSample} object.
// Software Guide : EndLatex
const unsigned int MeasurementVectorLength = 3;
typedef itk::Vector< float, MeasurementVectorLength > MeasurementVectorType ;
typedef itk::Statistics::ListSample< MeasurementVectorType > SampleType ;
SampleType::Pointer sample = SampleType::New() ;
sample->SetMeasurementVectorSize( MeasurementVectorLength );
MeasurementVectorType mv( MeasurementVectorLength ) ;
mv[0] = 1.0 ;
mv[1] = 2.0 ;
mv[2] = 4.0 ;
sample->PushBack(mv) ;
mv[0] = 2.0 ;
mv[1] = 4.0 ;
mv[2] = 5.0 ;
sample->PushBack(mv) ;
mv[0] = 3.0 ;
mv[1] = 8.0 ;
mv[2] = 6.0 ;
sample->PushBack(mv) ;
typedef itk::Vector< unsigned int, 1 > ClassMaskVectorType ;
typedef itk::Statistics::ListSample< ClassMaskVectorType >
ClassMaskSampleType ;
ClassMaskSampleType::Pointer mask = ClassMaskSampleType::New() ;
mask->SetMeasurementVectorSize( 1 );
ClassMaskVectorType m( 1 ) ;
m[0] = 0 ;
mask->PushBack( m ) ;
m[0] = 0 ;
mask->PushBack( m ) ;
m[0] = 1 ;
mask->PushBack( m ) ;
typedef itk::Statistics::MembershipSampleGenerator< SampleType,
ClassMaskSampleType > GeneratorType ;
GeneratorType::Pointer generator =
GeneratorType::New() ;
generator->SetInput( sample ) ;
generator->SetClassMask ( mask ) ;
generator->SetNumberOfClasses( 2 ) ;
generator->GenerateData() ;
GeneratorType::OutputType::ConstPointer membershipSample =
generator->GetOutput() ;
if ( membershipSample->Size() != 3 )
{
std::cout << "Test failed: Wrong total size." << std::endl ;
return EXIT_FAILURE ;
}
if ( membershipSample->GetClassSampleSize(0) != 2 ||
membershipSample->GetClassSampleSize(1) != 1 )
{
std::cout << "Test failed: Wrong class sample size." << std::endl ;
return EXIT_FAILURE ;
}
for ( unsigned long id = 0 ; id < membershipSample->Size() ; ++id )
{
if ( membershipSample->GetClassLabel(id) !=
(mask->GetMeasurementVector(id))[0] )
{
std::cout << "Test failed: Class labels do not match between the generated MembershipSample and the class mask sample." << std::endl ;
return EXIT_FAILURE ;
}
}
std::cout << "MembershipSampleGenerator Test succeeded." << std::endl ;
return EXIT_SUCCESS ;
}
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