P3D Re: The Imagination Effect

[wier@xxxxxxxxxxxxxxxxx (Bob Wier)]

>I experienced a similar effect first time last year and found it too
>real and stunning to be completely "imagined."  I think each eye
>selectively concentrates on different parts of the image sufficiently
>to trigger 3D perception.  In this respect I'd say it is stereoscopic.
>Sort of like perceiving the notes of a an arpeggio as a chord, except
>that the necessary cues are strung out in a 2D field instead of time.
>The effect happened to me after an evening of staring at stereograms.
>I think the training partly involves decoupling onès facility of
>focusing from that of depth perception.
>
>Oleg Vorobyoff

During a rather intense period of activity on 3d computer graphics use
a couple of years ago, I was freeviewing so much that I got to the point
where it was difficult *not* to see things in stereo, even if there were not
two views present. I attribute this to other depth clues in the image, such
as shading, objects obscuring other objects, chromadepth, and pufritch
effects. This was
a distinctly different "feel" than intellectually knowing the depth ordering
of objects via "analyzing" the picture - it "felt" like stereo (for want of
a better term).

I would not have believed it possible had I not experienced it myself...

FWIW

--bob wier

              Bob Wier
     mailto:wier@xxxxxxxxxxxxxxxxx
   1:03 PM Saturday, October 31, 1998
        Unix/Internet Administrator
   Rocky Mountain College, Billings MT.
 keeper of the Photo-3d and Overland-Trails
mailing lists and the USA GPS Waypoint server



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