[vtkusers] Topology preserving mesh decimation

[Hendrik Belitz]

Hello,

after I've found a work around for the creation of isosurfaces from binary 
volume datasets, I need to decimate the resulting meshes up to 95%. One 
important aspect is to keep the topology of the mesh - it still needs to be 
2-manifold after decimation. 

VTK Documentation only tells me that vtkDecimatePro has the ability to change 
mesh topology (maybe there is some kind of switch to disallow topology 
changes?). What about the other decimation filters? Is there any decimation 
filter that retains the original mesh topology.

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Hendrik Belitz
Central Institute of Electronics
Research Center Jülich
D-52428 Jülich, Germany
Tel.: (++49)2461 61 4578
Fax: (++49)2461 61 3990
email: h.belitz at fz-juelich.de