[vtkusers] vtkContourFilter behaviour question...

[Dominique Töpfer]

Hi Mathieu,

you could try padding your image before applying the filter.

HTH
Dominique

On 28.09.2011 19:21, Mathieu Coursolle wrote:
> Hi VTK users,
>
> I am currently using vtkContourFilter to create a polydata from a binary 3D image.
>
> I works fine for most of my datasets, except that I recently got datasets where there is binary data up to the edge of the dataset.
> The worst case is a 3D dataset for which all voxels have the same non-zero value (e.g. 1).
>
> I am looking for a behaviour where running the contour algorithm on such a dataset would result in a cubic polydata. I instead get an empty polydata.
>
> Is there a way to get the expected behaviour with vtkContourFilter? Or another algorithm?
>
> Thank you,
>
> Mathieu
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Thus spake the master programmer:
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Dominique Töpfer, Dipl.-Inform.
Institute of Medical Physics
University of Erlangen