From KitwarePublic
< ITK‎ | Examples
Revision as of 20:48, 24 December 2012 by Lorensen (talk | contribs)
Jump to navigationJump to search

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


<source lang="cpp">

  1. include "itkImageToListSampleAdaptor.h"
  2. include "itkImage.h"
  3. include "itkRandomImageSource.h"
  4. include "itkComposeImageFilter.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::ComposeImageFilter< FloatImage2DType, ArrayImageType >
 CasterType::Pointer caster = CasterType::New();
 caster->SetInput( random->GetOutput() );
 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 ;

} </source>


<syntaxhighlight lang="cmake"> cmake_minimum_required(VERSION 3.9.5)


find_package(ITK REQUIRED) include(${ITK_USE_FILE}) if (ITKVtkGlue_LOADED)

 find_package(VTK REQUIRED)


add_executable(ImageToListSampleAdaptor MACOSX_BUNDLE ImageToListSampleAdaptor.cxx)


 target_link_libraries(ImageToListSampleAdaptor ITKReview ${ITK_LIBRARIES})


 target_link_libraries(ImageToListSampleAdaptor ${ITK_LIBRARIES})

endif( "${ITK_VERSION_MAJOR}" LESS 4 )


Download and Build ImageToListSampleAdaptor

Click here to download ImageToListSampleAdaptor and its CMakeLists.txt file. Once the tarball ImageToListSampleAdaptor.tar has been downloaded and extracted,

cd ImageToListSampleAdaptor/build
  • If ITK is installed:
cmake ..
  • If ITK is not installed but compiled on your system, you will need to specify the path to your ITK build:
cmake -DITK_DIR:PATH=/home/me/itk_build ..

Build the project:


and run it:


WINDOWS USERS PLEASE NOTE: Be sure to add the ITK bin directory to your path. This will resolve the ITK dll's at run time.

Building All of the Examples

Many of the examples in the ITK Wiki Examples Collection require VTK. You can build all of the the examples by following these instructions. If you are a new VTK user, you may want to try the Superbuild which will build a proper ITK and VTK.


ITK >= 4

For examples that use QuickView (which depends on VTK), you must have built ITK with Module_ITKVtkGlue=ON.

ITK < 4

Some of the ITK Examples require VTK to display the images. If you download the entire ITK Wiki Examples Collection, the ItkVtkGlue directory will be included and configured. If you wish to just build a few examples, then you will need to download ItkVtkGlue and build it. When you run cmake it will ask you to specify the location of the ItkVtkGlue binary directory.