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From: vicorp!ron@uunet.UU.NET (Ron Peterson)
Newsgroups: sci.virtual-worlds
Subject: Re: Japanese stereo TV/computer terminals
Message-ID: <1991Jun20.231600.1697@milton.u.washington.edu>
Date: 19 Jun 91 20:15:54 GMT
References: <1991Jun18.161206.19250@milton.u.washington.edu>
Sender: hlab@milton.u.washington.edu (Human Int. Technology Lab)
Organization: V. I. Corporation, Amherst, Massachusetts
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Approved: cyberoid@milton.u.washington.edu



In article <1991Jun18.161206.19250@milton.u.washington.edu> hlab@milton.u.washin
gton.edu (Human Int. Technology Lab) writes:

>From BUSINESS WEEK, June 24, 1991:
>        THREE DIMENSIONS, NO FUNNY GLASSES
>        NTT's display has
>        two infrared sensors that track a viewer's head position
>        and adjust for these movements.

Any indication of how the tracking is accomplished?  Does the viewer
have to wear an emitter or perhaps paste an IR reflective sticker on
their forehead?  Or does it just look for reflections from the face?
(And how would that work with black people and other colors?  In the IR
band is everyone white/reflective?)  Sounds like it won't work with
two people also.

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