[ITK-dev] Problem using TriangleToSimplexFilter

[Pfaehler, EAG (ngmb)]

Dear all,

I have an image mask, from which I need the surface, the volume, the flatness etc.

For this, I wanted to transform my mask in  mesh. In order to calculate the volume, I wanted to transform the normal mesh to a simplex mesh using the TriangleToSimplexFilter.
This is my code:

typedef itk::Mesh<float, 3> MeshType;
    typedef itk::SimplexMesh<float, 3> TSimplex;
    typedef itk::TriangleMeshToSimplexMeshFilter<MeshType, TSimplex> TriangleToSimplexFilter;
    typedef itk::SimplexMeshVolumeCalculator<TSimplex> TVolume;
    typedef unsigned char PixelType;
    typedef itk::BinaryMask3DMeshSource<ImageType, MeshType> MeshSourceType;
    typename MeshSourceType::Pointer meshSource = MeshSourceType::New();
    const PixelType objectValue = static_cast<PixelType>(1);
    meshSource->SetObjectValue(objectValue);
    meshSource->SetInput(mask);
    try{
        meshSource->Update();
    }
    catch(itk::ExceptionObject &exp){
        std::cerr<<"Exception throwing during update()"<<std::endl;
    }
      // Ensure that all cells of the mesh are triangles.
  for (MeshType::CellsContainerIterator it = meshSource->GetOutput()->GetCells()->Begin();
       it != meshSource->GetOutput()->GetCells()->End();
       ++it)
    {
    MeshType::CellAutoPointer cell;
    meshSource->GetOutput()->GetCell(it->Index(), cell);
    if (3 != cell->GetNumberOfPoints())
      {
      std::cerr << "ERROR: All cells must be trianglar." << std::endl;

      }
    }

    TriangleToSimplexFilter::Pointer Transform2Simplex = TriangleToSimplexFilter::New();
    Transform2Simplex->SetInput(meshSource->GetOutput());
    Transform2Simplex->Update();

However, when I run the code, it is calculating and never stopping. Would there be another approach? And does someone knows where the problem could be?

Thanks in advance for the help

Elli
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