[vtkusers] An ERROR during reconstruction by using vtkMarchingCubes

[noc]

Hi everybody,

I'm just new here.

 

Well, I met a problem in isosurface drawing.

 

The ERROE message is: ERROR: In f:\program files\vtk 5.4\vtk src\common\vtkDataArrayTemplate.txx, line 141 vtkIdTypeArray (501E4CC8): Unable to allocate 44288846 elements of size 4 bytes.

 

I wondered why this happen so frequently. I just used 100 DICOM files,  the RAM of my computer is 1GB, and the virtual memory is 2GB, during reconstruction, it only cost 0.99GB memory in total. 

 

Could anyone help me please?

 

Thanks a lot!!!

 

In the end, here is my code:

 

#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkImageData.h"
#include "vtkMarchingCubes.h"
#include "vtkActor.h"
#include "vtkPolyDataMapper.h"
#include "vtkDICOMImageReader.h"
#include "vtkStripper.h"
#include "vtkDirectory.h"
#include "vtkStripper.h"


int main()
{   
  vtkDICOMImageReader * DicomReader = vtkDICOMImageReader :: New(); 
  DicomReader -> SetDirectoryName("D:/Data/CT");
  
  vtkRenderer * ren = vtkRenderer :: New();
  ren -> SetBackground (1, 1, 1);


  vtkRenderWindow * renWin = vtkRenderWindow :: New();
  renWin -> AddRenderer(ren);
  
  vtkRenderWindowInteractor * iren = vtkRenderWindowInteractor :: New();
  iren -> SetRenderWindow (renWin);
  
  vtkMarchingCubes * MC = vtkMarchingCubes :: New();
  MC -> SetInput(DicomReader -> GetOutput());
  MC -> SetValue(0, 30);
  MC -> ComputeGradientsOn();
  MC -> ComputeScalarsOff();

 

  vtkStripper * stripper = vtkStripper :: New();
  stripper -> SetInput (MC -> GetOutput());

 

  vtkPolyDataMapper * mapper = vtkPolyDataMapper :: New();
  mapper -> SetInput (stripper -> GetOutput());

 

  vtkActor * actor = vtkActor :: New();
  actor -> SetMapper(mapper);


  ren -> AddActor(actor);

 

 iren->Initialize();
  iren->Start();
  return 0;

}
 		 	   		  
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