CGAL users discussion list

[Andreas Fabri <>]

Hello,

GeometryFactory handles the commercial licensing of CGAL
and I would be glad to get a point cloud from you, to
show you what another algorithm, which we have not released
yet, could do.

Best,

Andreas

--
Andreas Fabri, PhD
Chief Officer, GeometryFactory
Editor, The CGAL Project

phone: +33.492.954.912    skype: andreas.fabri

On 29/01/2014 14:53, Stig Vidar Hovland wrote:
> Hi.
>
> I am new to cgal, but have looked at it for some days now. So far only
> for evaluation and to see if this is something we would like to use in
> our software and buy a license for.
>
> I have looked at “Surface Reconstruction from Point Sets” and it seems
> to me that this module is meant for closed solids which you can
> calculate a volume for.
>
> What I need is a terrain surface. I could use 2D triangulation, but this
> fails when the surface has overhang.
>
> Example point cloud:
>
> http://download.heime.org/sky1.png
>
> http://download.heime.org/sky2.png
>
> Another example is a laser scan from tunnels where the floor is removed
> from the point cloud and only the roof and walls remain with overhang
> areas in the walls. We don’t want a closed surface of the tunnel, but
> only a roof and wall surface.
>
> This is the result I get from CGAL, http://download.heime.org/Capture.JPG
>
> A surface is generated for the floor, but there is no points in the
> pointcloud for the floor.
>
> What module in CGAL is best suited for this task?
>
> Regards
>
> Stig Vidar Hovland

--
Andreas Fabri, PhD
Chief Officer, GeometryFactory
Editor, The CGAL Project

phone: +33.492.954.912    skype: andreas.fabri