[vtkusers] vtkSurfaceReconstructionFilter on sparse point sets

[Tim Hutton]

Hi Tim,

Try:
http://www.sq3.org.uk/powercrust/

It tends to work much better than vtkSurfaceReconstructionFilter.
However, it will still give you a closed surface. In fact, I don't
know of any surface reconstruction work that will work nicely on open
surfaces (there must be some?). You could try removing over-large
triangles from the output of powercrust to get rid of the unwanted
surface?

hth,

Tim

On 6/28/05, Tim Raupach <tim.raupach at nicta.com.au> wrote:
> Hi,
> 
> I'm trying to create a surface mesh from a point cloud, but I'm having
> some difficulties. The surface is created nicely and looks correct in
> the centre, but it extends somewhat past the region where the points
> end. It appears like a flat surface that has had the object represented
> by the pointset pushed into it, leaving trailing edges.
> 
> I think the problem is because the point clouds we are working with are
> very sparse and not closed - I read in an archived post that
> vtkSurfaceReconstructionFilter requires a closed surface to work
> properly. Is that the case? If so, are there other filters that I might
> be able to look into using?
> 
> The pipeline I am using is like the example given in the VTK user's
> guide for vtk 4.4:
> 
> vtkSurfaceReconstructionFilter
> vtkContourFilter
> vtkSmoothPolyDataFilter
> vtkPolyDataNormals
> 
> Please let me know if you know of other surface reconstruction filters
> that might work better with an un-closed surface.
> 
> Thanks very much for your help,
> 
> Tim
> 
> --
> Tim Raupach
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-- 
Tim Hutton  -  http://www.sq3.org.uk