[vtkusers] Is there a special filter to smooth out marching cube meshes?

Vincent Magnotta vincent-magnotta at uiowa.edu
Fri Dec 4 09:18:06 EST 2009


It sounds like Lynx wants something similar to the
AntiAliasBinaryImageFilter that is in ITK. While this will not work on the
surfaces, it can be used to process the data before the surface is
generated.

Vince



On 12/4/09 7:07 AM, "Bill Lorensen" <bill.lorensen at gmail.com> wrote:

> The vtk smoothers have a feature angle that can control whether
> smoothing is done across "sharp" features.
> 
> On Fri, Dec 4, 2009 at 2:03 AM,  <lynx.abraxas at freenet.de> wrote:
>> Thanks a lot Bill for Your quick answer.
>> 
>> On 03/12/09 16:49:13, Bill Lorensen wrote:
>>> All of the smoothing algorithms keep the mesh closed (if it was to
>>> start with) and manifold. As for the second request, that is a very
>>> specific. No vtk algorithm exists to do that.
>> 
>> I'd  think  that the normals of adjacent faces from the marching cubes
>> surface
>> have discint angles to each other. Is that correct?
>> Would it perhaps be possible to take  advantage  of  that  fact  to  create
>>  a
>> smoothing  filter  that  smoothes  only adjacent faces if they are oriented
>> to
>> each other with these typical angles?
>> 
>> Regards,
>> Lynx
>> 
>> 
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