Re: VRML / QuickTime VR marriage

Linas Vepstas ([email protected])
Wed, 18 Oct 1995 12:34:27 -0500


> [email protected] (Michael Linde) says:
> > 3) Here is the weakness of QTVR: it is still-life images
> > mapped into a surround environment. Granted you can create links =
to move
> > to other perspectives or zoom in to some items, the entire =
environment is=20
> static.

Siggraph 95 had a paper from (chapel hill nc?) that showed how one =
could
move through a qtvr-type environment. The demo had full parallax =
motion
effects (i.e. things close to you move "faster" than things far away.
The author had basically taken a series of photographs from different
locations. He had a way of stiching them together so that the cameras
did not have to be perfectly aligned, etc. For the stereo/parrallax
effect, he showed that the problem of matching pixels in one image
to those in another is not as hard as one might think -- something =
about
how they follow a sine curve on a cylinder as the viewer's viewpoint =
moves.

Clearly, QTVR does not currently support this, but given that this =
paper
was immediately followed by the QTVR paper, one can surmise that the
Apple people know about it. And, unless they are asleep, which I doubt,
they are working on it. I personally expect to hear about a QTVR
extension that allows smooth movement, I figure, before end of '97.

---linas


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