Re: stereo on very large scene

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Angus Dorbie (dorbie++at++multipass.asd.sgi.com)
Wed, 18 Jun 1997 14:03:15 -0700

On Jun 18, 3:14pm, Squivid++at++segolene.roazhon.inra.fr wrote:
> Subject: stereo on very large scene
> Hello,
>
> has someone ever worked on stereo with very large scene
> using Digital Elevation Model and satellite image textures
> or something like that ?
> is stereo interisting on this very large scene ?

Yes. Stereo is used to generate elevation information. It's also used for
visualisation although in realistic VR environments on large databases
the stereo doesn't buy you much due to the small eye separation relative
to the database. It *seems* to columate everything unless you have some
information in the near distance In a gods eye representation such as
battlefield visualisation the eye separation is artificially large to
make the stereo usefull for perceiving distance.

Display devices like the Fakespace Immersive Workbench are used for
"electric sandtable" applications where the display geometry is scaled
in the virtual world. The changing frustums used for each eye projection
are determined by the physical display device and the relative viewing
position of each eye.

Cheers,Angus

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