[vtkusers] Uniform subsampling of mesh (point cloud) and normals

[Sébastien Valette]

Hi,

Le 11/02/2011 15:04, Øystein Skotheim a écrit :
> Hello. I have a high-resolution mesh that I would like to subsample to 
> a given resolution (e.g. I want to specify that the vertices should be 
> 5mm apart from each other).
>
> Are there any decimation filters in VTK that can do this? (I do not 
> want to specify the number of output polygons, only the vertex spacing).
>
> (I was playing with vtkCleanPolyData, but it destroys the topology of 
> my mesh)
>
> Also, I would like to smooth the normals in the mesh (to minimize 
> influence from local, high-frequency variations in the geometry). 
> Ultimately I want to end up with list of points with associated 
> (smooth) surface normals.
>
> Any opinions on how to do this correctly are appreciated :-)

you could give a try to my mesh coarsening algorithm available here:
http://www.creatis.insa-lyon.fr/site/acvd

it uses VTK as base library.

Greetings,

Sebastien





>
> Cheers,
>
> ---
> Øystein Skotheim
> Research Scientist
> SINTEF ICT
>
>
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