[vtkusers] 转发: Re: create the mesh for a surface

[家斌 梁]

Thank you David
not only a single lidar scan, i scan it from everywhere
the point cloud include the top bottom even inside the big fisure
i change the alpha, the best result that delaunay3d get is ok but with some triangle missing and some edge isolated(without triangle)
--- 09年6月24日，周三, David Doria <daviddoria at gmail.com> 写道：


发件人: David Doria <daviddoria at gmail.com>
主题: Re: [vtkusers] create the mesh for a surface
收件人: 
抄送: vtkusers at vtk.org
日期: 2009年6月24日,周三,下午11:18



On Wed, Jun 24, 2009 at 10:45 AM, $B2HIL(B $BNB(B <phoenix.sjtu at yahoo.com.cn> wrote:













Hi everyone
this is the first time i use this mail list
I hope it work
please reply me thank you very much
 
I have a point cloud in 3D scanned from a surface of an object
I want to create the mesh(triangulization) for this surface
 
I tried vtkSurfaceReconstructionFliter, but the output is not a mesh
 
I tried vtkDeluanay2D but it project my point to a 2D plan
and my points is on a complex surface(for example a flower) 
i cannot find the project function
 
i tried vtkDeluanay3D it will create the mesh in side the object
I set alpha = 0.2 it will remove most the edge inside but it also remove the edge on my surface
Someone has some good idea?
I thing it is problem very commun create a mesh for a surface 
I see some CAD software do it perfectly i know there must be a solution
 
Thank you very much for you attantion
LIANG Jiabin

Liang,

The list received your question correctly, welcome.

Is your data from a single lidar scan (where it is all acquired from a single viewpoint)? Or do you have points on the full 3d object (ie. front and back and top and bottom, etc)?

Thanks,

David

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