[vtkusers] vtkImageViewer and vtkDICOMImageReader success (almost)

[jonas]

When doing an simple example the DICOM reader works just fine:

DicomSimple.cxx
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#include "vtkDICOMImageReader.h"
#include "vtkImageViewer.h"
#include "vtkRenderWindowInteractor.h"

int main( int argc, char *argv[] )
{
	vtkDICOMImageReader *reader = vtkDICOMImageReader::New();
	reader->SetFileName("test.dcm");

	vtkImageViewer *viewer = vtkImageViewer::New();
	viewer->SetInput(reader->GetOutput());

	vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
	viewer->SetupInteractor(iren);

	viewer->Render();

	iren->Initialize();
	iren->Start();
	
	reader->Delete();
	viewer->Delete();
	iren->Delete();

	return 0;
}
---------------------------------------

But I would like to have more control of the code, because vtkDICOMImageReader
just work as a wrapper for a few classes. When doing the following (and i am
using the same image again) i get a segmentation fault:

DicomSimple.cxx
---------------------------------------
#include "vtkDICOMImageReader.h"
#include "vtkBMPReader.h"
#include "vtkImageMapper.h"
#include "vtkActor2D.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"

int main( int argc, char *argv[] )
{
	vtkRenderWindow *RenderWindow = vtkRenderWindow::New();
	vtkRenderer *Renderer = vtkRenderer::New();
  
	vtkImageMapper *ImageMapper = vtkImageMapper::New();
	vtkActor2D *Actor2D = vtkActor2D::New();
	
	// Using a bmp reader works fine
	//vtkBMPReader *reader = vtkBMPReader::New();
	//reader->SetFileName("test.bmp");
	
	// But the dicom image from last example results in a seg. faults
	vtkDICOMImageReader *reader = vtkDICOMImageReader::New();
	reader->SetFileName("test.dcm");

	ImageMapper->SetInput(reader->GetOutput());
	Actor2D->SetMapper(ImageMapper);
	Renderer->AddActor2D(Actor2D);
	RenderWindow->AddRenderer(Renderer);
	
	vtkRenderWindowInteractor *RenderWindowInteractor =
vtkRenderWindowInteractor::New();
	RenderWindowInteractor->SetRenderWindow(RenderWindow);
	
	RenderWindow->Render();
	
	RenderWindowInteractor->Initialize();
	RenderWindowInteractor->Start();

	return 0;
}
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CMakeLists.txt
---------------------------------------
PROJECT (Step1)

INCLUDE (${CMAKE_ROOT}/Modules/FindVTK.cmake)
IF (USE_VTK_FILE)
  INCLUDE(${USE_VTK_FILE})
ENDIF (USE_VTK_FILE)

LINK_LIBRARIES(vtkRendering vtkIO vtkDICOMParser)

ADD_EXECUTABLE(DicomSimple DicomSimple.cxx)
TARGET_LINK_LIBRARIES(DicomSimple vtkDICOMParser)
---------------------------------------

I am using VTK 4.4.2 using CMake 2.2 in Windows XP with CygWin and gcc 3.4.4.

Do you get the same error when running these two programs (I assume you use a
DICOM image named test.dcm for testing)?