ITK/Examples/Statistics/ImageToListSampleAdaptor

Convert the pixels in an image to a list of measurements in a ListSample.

ImageToListSampleAdaptor.cxx

<source lang="cpp">

1. include "itkImageToListSampleAdaptor.h"
2. include "itkImage.h"
3. include "itkRandomImageSource.h"
4. include "itkScalarToArrayCastImageFilter.h"

int main(int, char *[]) {

 typedef itk::Image<float,2> FloatImage2DType;

 itk::RandomImageSource<FloatImage2DType>::Pointer random;
 random = itk::RandomImageSource<FloatImage2DType>::New();

 random->SetMin(    0.0 );
 random->SetMax( 1000.0 );

 typedef FloatImage2DType::SpacingValueType  SpacingValueType;
 typedef FloatImage2DType::SizeValueType     SizeValueType;
 typedef FloatImage2DType::PointValueType    PointValueType;

 SizeValueType size[2] = {20, 20};
 random->SetSize( size );

 SpacingValueType spacing[2] = {0.7, 2.1};
 random->SetSpacing( spacing );

 PointValueType origin[2] = {15, 400};
 random->SetOrigin( origin );

 typedef itk::FixedArray< float, 1 > MeasurementVectorType;
 typedef itk::Image< MeasurementVectorType, 2 > ArrayImageType;
 typedef itk::ScalarToArrayCastImageFilter< FloatImage2DType, ArrayImageType >
   CasterType;

 CasterType::Pointer caster = CasterType::New();
 caster->SetInput( random->GetOutput() );
 caster->Update();

 typedef itk::Statistics::ImageToListSampleAdaptor< ArrayImageType > SampleType;
 SampleType::Pointer sample = SampleType::New();

 sample->SetImage( caster->GetOutput() );

 SampleType::Iterator iter = sample->Begin() ;

 while( iter != sample->End() )
   {
   std::cout << iter.GetMeasurementVector() << std::endl ;
   ++iter;
   }
   
 return EXIT_SUCCESS;

} </source>

CMakeLists.txt

<source lang="cmake"> cmake_minimum_required(VERSION 2.6)

PROJECT(ImageToListSampleAdaptor)

FIND_PACKAGE(ITK REQUIRED) INCLUDE(${ITK_USE_FILE})

ADD_EXECUTABLE(ImageToListSampleAdaptor ImageToListSampleAdaptor.cxx) TARGET_LINK_LIBRARIES(ImageToListSampleAdaptor ITKBasicFilters ITKCommon ITKIO)

</source>