CGAL users discussion list

[Thomas Holzmann <>]

Hi,

the function poisson_surface_reconstruction_delaunay very frequently crashes on my datasets.

I use standard parameters (I also tried varying the parameters) and I compute the average spacing with CGAL::compute_average_spacing. I also remove outliers with CGAL::remove_outliers.

On two of my datasets I regularly (at least at 2 out of 3 runs) get this error:

CGAL ERROR: assertion violation! File: CGAL-4.11/include/CGAL/Surface_mesher/Surface_mesher.h Line: 253 Explanation: (56.0006 41.2038 -0.0783118) is already inserted on surface.
After asking google, I found out that setting the Non_manifold_tag() might help. But this didn't help in my case. Then I usually get other errors:
CGAL::Polyhedron_incremental_builder_3<HDS>::
add_vertex_to_facet(): input error: disconnected facet complexes at vertex 225:
           involved facets are: 137 134 135 (closed cycle) and.

or this one:

CGAL::Polyhedron_incremental_builder_3<HDS>::
lookup_halfedge(): input error: facet 1803 shares a halfedge from vertex 3005 to vertex 3004 with facet 1788.

Can someone give me a hint what the problem could be? My input point cloud has several big holes. Might that be a problem?
Thanks!
Thomas

-- 
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Dipl.-Ing. Thomas Holzmann
TU Graz - Institut fuer Maschinelles Sehen und Darstellen
Graz University of Technology - Institute for Computer Graphics & Vision
Inffeldgasse 16/II, 8010 Graz, Austria

http://www.icg.tugraz.at/
phone: +43 316 873 5091
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