[vtkusers] help with finding a surface

[nuno.jf]

Hi,

I apologize if I'm being lay but I think vtkImageMarchingCubes doens't do
what I need. 
Let me put the things this way:
- I have N point clouds corresponding to a surface, that are aligned using
ICP and the aligned points are placed in an 3D image;
- I have a great dispersion of the surface points, probably due to my
scanner quality (resulting from artifacts or low accuracy...);
- The only thing I know is the maximum number of points I get in one voxel
in the image.

What I really need is an algorithm that finds the regions in the surface
where I have the biggest density of points and generates the isosurfaces
passing trough those regions. vtkImageMarchingCubes requires the user to set
the contour value or a range of values. I can give it some values, but what
I really want is to find the regions where there is a biggest density,
because the density can have local maximum/minimum values. If I set the
values, I will automatically limit the contouring.
Once again, thank you very much for your help (and patience because I can be
a little boring xD) 
BR,
Nuno

PS: I don't know if this is relevant or not, not even if this is
innapropriate, but I don't have specific values like grey or blue. Sorry for
any incoherence, but some terms are new to me.

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