3D Scanning

Lluís Batlle i Rossell viriketo at gmail.com
Tue Jul 13 14:38:41 EDT 2010

On Tue, Jul 13, 2010 at 02:14:46PM -0400, James Xakh Lynch wrote:
> Anyone know if blender can open these?

Those files include only the 'points', but not the triangulation (so what points
make a triangle).
The original program has to know the triangulation (the mesh); somehow that was lost
exporting. There are algorithms to get the mesh later from a cloud of points
(without their surface normals) - for example, Delaunay 3D - but that should not
be needed in this case as the original program knows all.

Once having scans of every possible side, a 'global registration' algorithm has
to match all together, and an integration algorithm has to remesh them all to
get a single mesh.

I'll try to work on that (with more accurate scans) once having a nanonote at hand.


> On Jul 13, 2010 2:12 PM, "Wolfgang Spraul" <wolfgang at sharism.cc> wrote:
> Werner et al,
> > Wolfgang has a few test scans on his laptop which I hope he can post.
> > The scanning software sup...
> Yes, sure. Sorry this took so long. I uploaded the test scans Werner
> and I did to
> http://downloads.qi-hardware.com/people/wolfgang/3d_scans/
> Note that these are really just test scans. I doubt they are usable for
> any real purpose. First scan ("bottom") was saved in a number of formats
> the Picza3 software allowed us to export to, but not in Picza's native
> format.
> For the subsequent scans, Werner saved in Picza's native format (.pij).
> Wolfgang
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