[OSGeo-Discuss] Generalizing complex 3D vector polygon data

Stefan Steiniger sstein at geo.uzh.ch
Tue Mar 23 12:47:24 PDT 2010

not that I know of any 3D FOSS.

however I know of research in Hannover (GER) by Frank Thiemann - german 
only webpage:

and Potsdam (GER) group of Juergen Doellner:

so maybe look for publications of those people?

Alexandre Leroux wrote:
> Dear list,
> Here's my challenge. I have 3D buildings originally in the AutoCAD 
> format which are composed of hundreds of 2D polygons in 3D space.
> Is there any tool that can "generalize" 3D data?
> I found that GRASS GIS offers line generalization:
> http://grass.itc.it/gdp/html_grass64/v.generalize.html
> but found nothing regarding 3D generalization.
> My feeling is that 'GIS technology' is just not there yet. There's just 
> no implemented algorithms to generalize complex 3D to less complex 3D 
> data. Am I right?
> Since my team is heavily using FOSS4G, we're looking for a solution (if 
> any) that would ideally be 100% FOSS4G.
> Thanks for any feedback,
> Alex

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