Re: AN interesting comment.
Craig A. Vrana (craig++at++nvg.aircrew.asu.edu)
Thu, 16 Jan 1997 17:58:56 -0700
On Jan 16, 3:53pm, Nathaniel Bletter wrote:
> Subject: Re: AN interesting comment.
> In studies we've done with simple images, double or triple framing causes
> multiple images of the moving object to appear as your eye is moving at a
> constant rate but the object is flashing twice in one spot, then twice in the
> next spot. You will get (refresh rate)/(update rate) images of the object, so
> for a 15 Hz update on a 60 Hz screen, you'll get 4 images. These images can
be
> very close together and low contrast so they're not always visible, but it is
> a real effect we have observed.
>
> --
>
> Nat Bletter
> SRI International
> nat++at++od.sri.com
> http://os.sri.com/people/nat/
> (415) 859-4358
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>-- End of excerpt from Nathaniel Bletter
I beleive an Air Force TR was written about this effect by Dr. Julie Lindholm
last year. I'll post the reference tomorrow.
--
Craig A. Vrana
Project Engineer
Night Vision Device Simulation
craig++at++nvg.aircrew.asu.edu
Hughes Training, Inc. - Armstrong Laboratory
6001 S. Power Rd., Building 560
Mesa, Arizona 85206
Tel: 602-988-9773 x-410
DSN: 474-6410
Fax: 602-988-3556
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on Mon Aug 10 1998 - 17:54:21 PDT