[vtkusers] Margin around surfaces

[Jothy]

Hi all,

I am trying to expand surfaces(isotropically/anisotropically) generated from
vtkDiscreteMarchingCubes. I used this as reference
http://www.mlahanas.de/CompGeom/Margins.htm.

It works well for more or less regular volumes. But for irregualr structures
it doesn't work properly. For example, spinal cord (looks in "C" shape in
sagittal view) it doesn't expand in the anterior direction. I even tweaked
the sigma in vtkThinPlateSplineTransform.

Any hints?

Thanks

Jothy
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