[vtkusers] smoothing / decimation / isocontours / distance between surfaces

[jon n]

hi,

i have a cloud data being viewed with isocontours. if we select certain 
isolevels, it shows two sections, the top and the bottom of the cloud. i'm 
supposed to find the average distance between the two sections. 
unfortunately the top and the bottom don't have quite reasonable geometry 
for this to work, as there's loops and holes around. using smoothing and 
connectivity filters helped a bit, but there's still some loops and holes.

is there a way (decimation?) to make the geometry (topology?) look better?

and does anyone have any suggestions on how to get distances between two 
surfaces?

thanks

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