It sounds like what you want to do is map images with
transparency to planes. Should be easy enough to do.
Then you render stereoscopic pairs of the stacked planes
to view. Nice idea. You would have to be very precise
in registration of the images on the planes, and no
doubt you would have to play around with the levels
of transparency to get it to work.

Then again to really use the power of a ray tracer you
would want to transform the data into a true three
dimensional model. That would be a real challenge and
has been accomplished by Voxel and other companies
that charge huge sums of money for the process.

 HB


"Kaveh" <kav### [at] delete_thisfocalimagecom> wrote in message
news:1fk1v9v.1kv3c4e1dl2lc8N%kaveh@delete_this.focalimage.com...
> Le Forgeron <jgr### [at] freefr> wrote:
>
> > Kaveh wrote:
> >
> > > I am interested in taking medical data, such as MRI, CAT, etc, and
> > > putting them together in povray to give a realistic view of the data
in
> > > 3D. This can be done holographically, by multiply recording the slices
> > > (e.g. http://www.voxel.com), but I want to see how good it would be in
> > > povray.
> > >
> > > There is a lot of work in detecting surfaces from the data,
> >
> >
> > http://astronomy.swin.edu.au/~pbourke/modelling/polygonise/
>
> Thanks for this link which is actually interesting and which I am
> reading now.
>
> But actually I don't want to do any such computation, but just put the
> planes up together and look at it as a whole, and let the eye/brain
> decipher the data.
>
> --
> Kaveh

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