[Insight-users] Getting PixelType& from VectorImage

[Eduardo Suarez-Santana]

I'd like to assign a component of a pixel of a VectorImage. I'm trying
to use the Value() method from an iterator without success. It works
with Image type, but I get a compiler error with VectorImage.

How can I assign just one component of a VectorImage?

Thanks,
-Eduardo


++++++++++++++++ testVector.cxx
#include "itkImageRegionIterator.h"
#include "itkVectorImage.h"

int main(int argc, char *argv[] )
{

  typedef itk::VectorImage<float,2> ImageType;
  //typedef itk::Image<float,2> ImageType;

  ImageType::Pointer image = ImageType::New();

  ImageType::SizeType regionSize;
  regionSize[0] = 5;
  regionSize[1] = 4;
 
  ImageType::IndexType regionIndex;
  regionIndex[0] = 0;
  regionIndex[1] = 0;
 
  ImageType::RegionType region;
  region.SetSize(regionSize);
  region.SetIndex(regionIndex);

  // comment next line to try with itk::Image
  image->SetVectorLength( 5 );
  image->SetRegions( region );
  image->Allocate();

  itk::ImageRegionIterator<ImageType> oo( image, region );

  oo.GoToBegin();
  while( !oo.IsAtEnd() )
  {
      // what I would like to do is something like
      //oo.Value()[2]=29837.0;

      // next line prints a compiler error when using VectorImage
      oo.Value();
      ++oo;
  }

}

+++++++++++++++ CMakeLists.txt
cmake_minimum_required(VERSION 2.6)
 
find_package(ITK)
if(ITK_FOUND)
  include(${ITK_USE_FILE})
else(ITK_FOUND)
  message(FATAL_ERROR "Please set ITK_DIR.")
endif(ITK_FOUND)

project(testVector)
 
add_executable(testVector testVector.cxx)
target_link_libraries(testVector ${ITK_LIBRARIES})