[vtkusers] what about speed? delaunay, decimate and QuadricClustering

[Sébastien MARAUX]

Hello,

I want to triangulate a DEM with a file size of 4000 x 4700 
(18 Million points with half of them having a value -> 9 
millions points to handle)

I am using a PIII 800 with 512 Mo SDRAM.

I expect a speed of about 10 000 triangles / sec for this 
part, is it OK ? (-> 15 minutes for this operation)

I also want to reduce the number of triangles issued of 
this DEM to about 10 000 or 100 000, using Decimate or 
QuadricClustering functions.

What time would it take to reduce 9 million triangles to
10 or 100 thousands keeping a fairly good visual quality?

I hope to achieve this operation in one night max, will it 
be possible ? 

Sebastien MARAUX, total newbie in VTK functions exploration 
and use.
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