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- Path: sparky!uunet!usc!zaphod.mps.ohio-state.edu!uwm.edu!ogicse!news.u.washington.edu!stein.u.washington.edu!hlab
- From: azuma@cs.unc.edu (Ronald Azuma)
- Newsgroups: sci.virtual-worlds
- Subject: SCI: Being underwater (was Re: SCI: More Vr and Psychology)
- Message-ID: <1992Nov21.051549.25432@u.washington.edu>
- Date: 20 Nov 92 18:45:09 GMT
- Article-I.D.: u.1992Nov21.051549.25432
- References: <1992Nov16.095244.9749@u.washington.edu>
- Sender: news@u.washington.edu (USENET News System)
- Organization: The University of North Carolina at Chapel Hill
- Lines: 33
- Approved: cyberoid@milton.u.washington.edu
- Originator: hlab@stein.u.washington.edu
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- In article <1992Nov16.095244.9749@u.washington.edu> AKOSSOWSKY@TURBO.kean.edu wr
- ites:
- >Underwater, your mask magnifies images and give a sense of tunnel
- >vision simalar to the lack of peripheral vision in an HMD. Add that
- >to the fact that you can 'fly' around objects from all directions, and
- >the effect is very 'VR' indeed!
-
- I can confirm that a few of the users that tried our systems made
- unsolicited observations of "feeling like I'm underwater." Besides the lack
- of peripheral vision, several properties might suggest this analogy:
-
- * Distortions in the HMD optics might remind a user of the distortions
- seen through a mask.
-
- * Increased inertia of the head due to the weight of the HMD and
- the latency in the system slow down user motions. In the water,
- your motions are also slower due to increased drag.
-
- * The resolution and contrast of our displays are pretty bad, making
- the images look murky.
-
- I'm not saying that our typical VE demonstrations are good
- simulations of diving underwater, any more than having a user "fly over
- a virtual country landscape by pointing in the direction he wants to go"
- is a convincing flight simulator. I just think of it as an interesting,
- though hardly perfect, analogy. I take it to be a sign of how much more
- work needs to be done to build systems that more closely match our normal
- experiences, on land.
-
- Ron Azuma
- (azuma@cs.unc.edu)
-