From kiyo@crl.go.jp Thu May 20 01:32:05 1999
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Date: Thu, 20 May 1999 11:27:32 +0900
To: kiyo@crl.go.jp
Cc: "'3d-ui@hitl.washington.edu'" <3d-ui@hitl.washington.edu>
Subject: Re: Virtual vs. real manipulation
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Status: RO

Hi, all

It's been a quite stimulating discussion that I cant't help writing...

I agree that Doug's question only makes sense for Realistic VEs.
But what should not be forgotten is we will never be able to construct
perfectly realistic VEs, and in terms of lack or incorrectness of any
physical properties, all 'Realistic' VEs are 'Magic' VEs in a certain
extent. . In this context, differences between the real world and such
VEs may affect both well and badly (e.g., the efect of gravity and
friction may go either way) depending on the task.

And unfortunately, VEs often get away from real by trying to make VEs
real..! For example, the more the objects, the slower the graphics. And
the more we add multimodal devices, the more awkward the whole system be.
Things go better, but we all have such dilemma, don't we ?

Anyway, I think the performance comparison only is useless. It'd be
useful with detailed configuration data (still, only useful for
researchers ? :-))

P.S. please change my e-mail address of the ML from
     kiyosi-k@is.aist-nara.ac.jp to kiyo@crl.go.jp

----
Kiyoshi KIYOKAWA
Multimedia Communications Section,
Communications Research Laboratory,
Ministry of Post and Telecommunication, Japan
Email: kiyo@crl.go.jp / Tel/Fax: +81-42-327-6250/7941