[vtkusers] [Gdcm2] Problem with vtkGDCMPolyDataReader and vtkVoxelContoursToSurfaceFilter

[Mark Roden]

Hi Jothy,

There are a variety of ways to do this.  Jon Morra has been posting a
lot of questions about the display of rtstructs to the vtk-users
mailing lists, you can google his name to find his questions and
approaches.  You can use vtkAppendPolyData as a minimal approach, but
I think you'll still have the individual planes you see there.

This is the bailiwick of vtk, rather than gdcm, however.  GDCM
concerns itself with DICOM, and DICOM specifies that the contours
should be stored this way.  How those contours are displayed is
outside the standard.  Plus, VTK is going to be better at it anyway,
as that's more VTK's core mission.

HTH,
Mark

On Tue, Mar 8, 2011 at 9:16 AM, Jothy <jothybasu at gmail.com> wrote:
> Hi all,
>
> I want to create a surface from the vtkPolyData read by
> vtkVoxelContoursToSurfaceFilter from a DICOM RT Struct set. But the problem
> is every slice of each structure is shown as  separate surface (see figure
> attached). I think the vtkGDCMPolyDataReader returns every contour as a
> separate polyData. How to merge the polyData of a particular structure into
> one vtkPolyData.
>
> Thanks
>
> Jothy
>
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