[vtkusers] vtkMarchingCubes to point cloud

[Murat Aydın]

Right, Bill. I am trying to create surface from point clouds with no convex 
hull.

I am trying different approaches (vtkSurfaceReconstruction, 
vtkMarchingCubes,vtkContourFilter etc..)
vtkRecursiveDividingCubes didnt give any result too (numberOfCells = 0, 
numberOfPoints=0).
I think these filters work well with dense points. MarchingCubes filters are 
working with
image data.
I have 8 points in a vtkPolyData. I tried 
vtkVoxelModeller,vtkPolyDataToImageStencil (polydata should contain polygons 
for this filter, i have only points)
and other approaches i found in mail list archive,but no result.

vtkVoxelModeller produces vtkImageData with 8000 points and 6556 cells. I 
put output of voxel modeller to marching filters' input and again 
numberOfCells = 0, numberOfPoints = 0.

Thanks.

murat


----- Original Message ----- 
From: "Bill Lorensen" <bill.lorensen at gmail.com>
To: "Harvey Cline" <harvey.cline at kitware.com>
Cc: "Murat Aydın" <murat.aydin at netcad.com.tr>; <vtkusers at vtk.org>
Sent: Thursday, September 17, 2009 8:18 PM
Subject: Re: [vtkusers] vtkMarchingCubes to point cloud


Harv,

murat wants to go from points to a surface even though the subject
says otherwise.

Bill

2009/9/17 Harvey Cline <harvey.cline at kitware.com>:
> Hi murat
>
> The vtkRecursiveDividingCubes will create a dense point cloud in place
> of vtkMarchingCubes;however, there are several tricky parameters that
> are needed to be set to control the point density
>
> SetValue
> SetDistance
> SetIncrement
>
> An easy Example to try it is Medical1 in Medical in Examples in VTK
>
> Hope this works for you
> Harvey
>
> 2009/9/17 Murat Aydın <murat.aydin at netcad.com.tr>:
>> Hi,
>> How can i use vtkMarchingCubes for creating surfaces from a point cloud.
>> vtksurfacereconstructionFilter doesnt work reasonable because points are 
>> not
>> close enough.
>> I couldnt apply vtkMarchingCubes to polyData or unstructuredGrid. Thanks.
>>
>> murat
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