[vtkusers] sampling of 3D Data

[Kiran, P (CORP, GEITC)]

Hello VTK gurus,

I have a set 90,000 of 3-D points, they unstructured (They are not sampled
uniformly).
I want to generate a 30, 000 points by uniform sampling.  How can I do this
in VTK?
Are there any classes in VTK support this kind of stuff? 

Also,  can I generate a 3D mesh using the algorithms in VTK connecting
90,000 points and sample it to get 30,000 points?
 
Thanks in advance for help.

-Kiran