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Re: FW: Character Input w/o using Hands, Voice etc.

The camera I have seen them use for tracking eye movement is about the
size of an n sized batter (half the length of an aa batter).

-Paul

On Mon, 20 Apr 1998, Robin Burgener (ExoVision) wrote:

> Tracking the eye with a camera is an interesting idea but it might 
> interfere with the head-mounted display.  What if you could project an 
> IR grid or dot pattern on the eye then use a IR CCD camera to pick-up 
> the image; You should be able to see a distortion in the pattern 
> caused by the bulge of the cornea.  As an added bonus, it should be 
> possible to measure the curvature of the cornea to calculate the eye's 
> focal length.  So that it wouldn't interfere with the HMD, an optical 
> splitter could combine/split the images.
> 
> ----------
> From:  R. Paul McCarty[SMTP:]
> Sent:  Monday, April 20, 1998 8:21 AM
> To:  Bill Nordstrom
> Cc:  
> Subject:  Re: Character Input w/o using Hands, Voice etc.
> 
> On Sun, 19 Apr 1998, Bill Nordstrom wrote:
> > For hands-free, voice free, pointer direction the best approach IMO 
> is to
> > develop an eye tracking solution.  This would require a camera or 
> low power
> > laser within the hmd that would follow the movement of the eye. 
>  I've also seen
> > experimental implementations of this that use a contact lense 
> containing a thin
> > wire in its periphery to aide in tracking.  I also remember seeing 
> something in
> > the movie "Blue Thunder" about how the comanche helicopters have an 
> eye tracking
> > system in the helmet so the pilot just has to look at something to 
> target it.
> 
> There are easier ways to track the eye than using a laser, I know 
> some
> people doing vision research at the university of Rochester, and they 
> are
> using just plain old video grabbed from a miniature camera mounted on 
> the
> head to track the eye.  The eye is also very easy to track if you
> illuminate it with IR light.
> 
> -Paul
> 
> R. Paul McCarty / DARS Coordinator /  / 
> x52059
> 317 Lattimore Hall, University of Rochester, Rochester, NY 14627
> Computers don't make mistakes;what they do,they do on 
> purpose.-Dale/KOTH
> 
> 
> 
> 
> 

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