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Please see my site for a full field of view alternative for HMDs. Image quality is somewhat degraded beyond 120 degrees, but the sense of presence is very strong. The system is non contacting and works well with both video for telepresence and with real time graphics. Peripheral vision is fully engaged, and it also works in stereo for depth perception. www.flogiston.com Brian Park principal flogiston corporation. ----- Original Message ----- From: Bryn Wolfe <[log in to unmask]> To: <[log in to unmask]> Sent: Wednesday, July 12, 2000 8:16 AM Subject: Re: does anyone know this number? > Your points are well taken, Ian. However, my interest lies in the realm > of telepresence, where maximizing FOV improves immersion. Any person who > has worn a commercial HMD with even 60 degree displays can attest to the > sense of tunnel vision. Saying that stimulating all the perceptible FOV > of humans is ineffective is like saying that surround sound doesn't work > for the ears. Granted, a vision application can take advantage of the > lack of visual acuity of the human eye to present lower resolution in > the periphery, but only as long as the eye is pointed straight ahead. > The higher resolution is needed whereever foviation occurs, so as the > eye moves, so must the higher resolution. I am a proponent for high > resolution insets about the line of sight with lower resolution outside > of the human "stationary field" (to use Sanders' terminology). The HMD > still needs the high resolution display over the entire "eye field" > (again borrowing from Sanders). Software or hardware can implement the > lower resolution presentation outside of the eye field if data bandwidth > is limited to the HMD. > > In conclusion, I have found all commercial HMDs for which I have > experience to be adequate only for focused manipulation tasks. For > navigation, they are marginal, and for interraction with other persons > or moving objects, they are sorely inadequate. > > That's my two cents, discounted for inflation. > > Ian van der Linde wrote: > %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%