[vtkusers] vtkMarchingCubes

Mathieu Malaterre Mathieu.Malaterre at creatis.insa-lyon.fr
Wed Apr 23 14:08:20 EDT 2003


http://www.vtk.org/doc/nightly/html/classvtkSmoothPolyDataFilter.html

and
http://www.vtk.org/doc/nightly/html/classvtkWindowedSincPolyDataFilter.html
the later is not lagrangian -> no shrinkage !

HTH
mathieu

Marwan Adada wrote:
> Hello,
> Now I converted my 8bit buffer to a 16bit buffer and sliced it, then 
> passed it to vtkVolume16Reader and then to marching cubes, and I got the 
> volume.  But my result is not smooth at all, I set the 
> MarchingCube->ComputeNormalsOn(); and still the result is not smooth.
> Is there any filter I can use to smooth the resulting output from 
> marching cubes??
> Thanks in advance
> 
> Marc
> 
> P.S Thanks james;
> 
>> From: James Dessart <james at rogue-research.com>
>> To: Marwan Adada <adada_marwan at hotmail.com>
>> CC: vtkusers at public.kitware.com
>> Subject: Re: [vtkusers] vtkMarchingCubes
>> Date: Wed, 23 Apr 2003 13:58:55 -0400 (EDT)
>>
>>
>>
>> On Wed, 23 Apr 2003, Marwan Adada wrote:
>>
>> > I have an 8 bit volume data (205x233x251) that I need to pass to
>> > vtkMarchingCubes.  I tried using vtkImageReader but it seems not to 
>> work
>> > with vtkMarchingCubes.  I tried vtkImageData and still couldn't pass 
>> it to
>> > vtkMarchingCubes.  I know vtkVolume16Reader works with 
>> vtkMarchingCubes, but
>> > my data 8bits not 16bits.  I am wondering what vtk 8bit Readers does
>> > vtkMarchingCubes accepts, Any Ideas??
>>
>> What you could try would be to read it in as 16-bit values, and run
>> marching cubes on that.  The values would be between 0-255, as 8-bit
>> values generally are, but that shouldn't matter, if you specify your
>> threshold for marching cubes properly.
>>
>> hope that helps,
>> James
>>
> 
> 
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-- 
Mathieu Malaterre
CREATIS
28 Avenue du Doyen LEPINE
B.P. Lyon-Montchat
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http://www.creatis.insa-lyon.fr/~malaterre/




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