CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

Did you pass the manifold()  option?

https://doc.cgal.org/latest/Mesh_3/group__PkgMesh3Parameters.html#ga67c9c42cfafc22044cc74c704c29aa76

Best,

Sebastien.

On 9/7/20 12:09 AM, Sapphri ( via cgal-discuss Mailing 
List) wrote:
> Hello,
>
> I have a gray level image with multiple labels (1, 2, 3, ... ). I want to
> form a surface mesh for each, such that the boundaries between labels are
> aligned (e.g. what happens when running CGAL::make_mesh_3 on a domain with
> multiple labels).
>
> A similar post said to run CGAL::make_mesh_3 on the images and export them
> to .off files:
>
> http://cgal-discuss.949826.n4.nabble.com/Isosurfaces-from-Gray-level-image-td4661158.html
>
> However, when I try this the outputs are not manifold and have to be
> remeshed and many non-manifold regions have to be manually removed.
>
> I have run the surface mesh generation on each individual label and have
> gotten all manifold outputs, but the boundaries between labels are not
> aligned.
>
> Should I extract each surface from the mesh_complex_3_in_triangulation and
> run polygonal mesh repair? Or is there a way to get the surface mesh
> generation to mesh multiple surfaces at once?
>
> Thanks!
>
>
>
> --
> Sent from: http://cgal-discuss.949826.n4.nabble.com/