[vtkusers] Re: building isosurfaces from non-parallel slices

[Goodwin Lawlor]

You'll probably need to re-sample your data onto a structured points
dataset... you can try vtkShepardMethod or vtkGaussianSplatter to do this.
The output of these filters is a volume/structured points which can be
contoured directly.

If you want to do some programming, you could fit a radial basis function to
your data, sample it, then contour it. An RBF class would be a nice addition
to vtk.

hth

Goodwin


"Fred August" <pitoz at yahoo.com> wrote in message
news:20040701042740.21374.qmail at web50507.mail.yahoo.com...
Hello all.
Yet again another newbie question. Here it goes:

is there any way to build an isosurface from a set of
non parallel slices? Moreover is it possible to build
isosurface from a set of redundant non-parallel
slices?

an example of what I need to do: let's say that you
want to build a 3D model given a set of slices taken
using a sensorized hand-held ultrasound. And let's say
that you've taken various passes of the same area
using the handheld ultrasound probe. What to do?

thank you in advance, once again.

fred






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