[vtkusers] Point Cloud To Surface

[David Doria]

On Tue, May 14, 2013 at 7:26 AM, Simon von Bibra <simfirehawk at gmx.de> wrote:
> Hello Community,
>
> still no answer to this question. Are there any further ideas?
>
> Thanks Simon
>>
>> Hello Community,
>>
>> maybe this question has been asked already, but I could not find a good
>> answer so far.
>>
>> I have a cloud of points, where each point has a scalar value. Now I
>> want to have a iso-surface for a given scalar value.
>> I tried already following approaches:
>>
>> 1. Create a mesh with Delaunay3D:
>>        Works maybe ok for sizes of up to 10000 points, but for more
>> points it is unusable
>> 2.  Gaussian Splatter, but here I could not get it right. In the end I
>> just had some sphere, but no real iso-surface.
>>
>> I thought, I can maybe regularize the point cloud with something like
>> marching cubes, but I did not get it to work. Also I will loose
>> correctness, because of the regular sampling.
>>
>> Any ideas what will be a good way, to create the correct iso-surface?
>>
>> Thanks in advance
>> Simon


Can you provide the compilable code that you've tried and images of the output?

Have you seen these examples?
http://www.vtk.org/Wiki/VTK/Examples/Cxx/Modelling/MarchingCubes
http://www.vtk.org/Wiki/VTK/Examples/Cxx/Filters/GaussianSplat

David