CGAL users discussion list

["Bo Schwarzstein"<>]

Title: Mail

If I am not wrong, from point cloud to mesh is just a progress like this, first divide whole point cloud into small node, then apply k-nearest to find some center and neighbor, then use least-square fit like method to convert each cluster to local parameterzation coordinate system, interpolated, output.

 

Recently I am working on a relighting sytem, I hope it can be more like a point-based renderer compared with Lightspeed from ILM and Lpcis from PIXAR. I found that CGAL recently do not supply utility to solve these problem on point, so I am working all by myself.

 

Thanks for the link Pierre supplied :-)

 

 

Bo Schwarzstein

Gott sprach: Es werde Licht! Und es wurde Licht.

----- Original Message -----

From:

To:

Sent: 2008-03-25, 09:06:27

Subject: Re:Re: [cgal-discuss] Mesh Generation from Point Clouds

 hi,Alliez

 I wanto to know if you have the programme of Planar Parameterization of Triangulated Surface Meshes, which is great helpful to my research.

 

 

 

--

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Wenlong LI, PhD Candidate 
State Key Lab of Digital Manufacturing Equipment & Technology
Huazhong University of Science & Technology
Wuhan, Hubei, P. R. China (430074)
Tel: ++86-27-87559416-2253
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在2008-03-24，"Pierre Alliez" <> 写道：

hi Andrew,

I guess you are talking about mesh reconstruction from point sets?

we are working on it - but nothing before the next release.

in the meantime - if you have point sets with oriented normals I recommend
http://www.cs.jhu.edu/~misha/Code/PoissonRecon/

best,

Pierre

Andrew Corcoran a écrit :
>
> Hi there,
>
> I''m currently using the 3D alpha shape triangulation package in CGAL 
> to do mesh generation for point clouds. However alpha shapes don't 
> seem to deal with concave surfaces or large abrupt concave angle 
> changes in a visually pleasing manner.
>
> I've come across several commercial packages that seem to do this but 
> nothing thats freely available. I was wondering if there are any plans 
> to implement other meshing algorithims for point clouds rather than 
> just Delaunay and Alpha in CGAL or if anyone knows of another 
> free/open source package that has implemented slightly more robust 
> point cloud meshing.
>
> Thanks
> Andrew

-- 
Pierre Alliez
INRIA Sophia Antipolis - Mediterranee 
http://www-sop.inria.fr/geometrica/team/Pierre.Alliez/
Tel: +33 4 92 38 76 77
Fax: +33 4 97 15 53 95

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