[vtkusers] vtkDelaunay2D

[Immo Trinks]

Hi Cedric

I think what you want is a program like Cocone or TightCocone
from Tamal Dey at Ohio State University.
http://www.cse.ohio-state.edu/%7Etamaldey/cocone.html
The code is free but you have to apply for a password in order to download it.

vtkDelaunay2D triangulates the points by projecting them into a plane and then 
performing a 2D triangulation. You can rotate your point cloud in order to 
get a better triangulation, however, to my knowledge you won't be able to 
obtain a triangulated surface that fits nicely around a 3D point cloud.

I had recently a similar problem and used sucessfully the cocone program for 
surface reconstruction. You can then read the output from Cocone and convert 
it quite easy into vtk readable format. Let me know if you need advice on how 
to convert it.

Immo



On Thursday 03 Jun 2004 2:30 pm, Cedric Marchessoux wrote:
> Sorry,
>
> I send this email a new time but I have no answer, and I need some help
> !!!!!
>
> Cédric,
>
> Dr, Phd,
> Marie Curie Fellow, post doctorate
> Agfa Gevaert, RDM/Physics & Analytics
> + 32 (0) 3 444 3077,
> cedric.marchessoux at agfa.com
> http://www.marchessoux.com
> ----- Forwarded by Cedric Marchessoux/AWHZG/MOR/AGFA/BE/BAYER on 03/06/2004
> 15:28 -----
>
> |---------+---------------------------->
> |
> |         |           Cedric           |
> |         |           Marchessoux      |
> |         |
> |         |           01/06/2004 11:40 |
> |
> |---------+---------------------------->
> |
>   >------------------------------------------------------------------------
>   >------------------------------------------------------|
>   >
>   |       To:       vtkusers at vtk.org                                       
>   |                                                      | cc:             
>   |                                                                        
>   |                               | Subject:  vtkDelaunay2D                
>   |                                                                        
>   |        |
>   |
>   >------------------------------------------------------------------------
>   >------------------------------------------------------|
>
> Dear vtkusers,
>
> As you can see in the attached file (example.jpg).
>
> I have some points in green color and I want to reconstruct the surface,
> nevertheless this surface reconstructed by the vtkDelaunay2D object is not
> closed.
>
> I would like to close the surface and I know the position of limits, edges
> !!!
>
> Could you tell if there is a specific way with "vtkDelaunay2D" ?
>
> Regards,
>
> (See attached file: example.jpg)
>
> Cédric,
>
> Dr, Phd,
> Marie Curie Fellow, post doctorate
> Agfa Gevaert, RDM/Physics & Analytics
> + 32 (0) 3 444 3077,
> cedric.marchessoux at agfa.com
> http://www.marchessoux.com