T3D Re: Cardboarding...

[Peter Homer <P.J.Homer@xxxxxxxxxxxxx>]

>Here's a problem I'd like your input in solving..
>
>I believe "card boarding" is a dual lens artifact; it results from the brain
>only recognizing self-similarities between edge boundaries, typical to a
>dual lens stereo pair. These self-similarities are only obvious to the brain
>because background shifts are apparent. In other words, I don't think a
>smooth, non-textured object will display volume in a dual lens system unless
>other stereo clues, such as shading or movement, are present.
>
>One way of testing this thesis might be to suspend dull, un-textured spheres
>(such as last years "Father Christmas"'s balls) in an evenly illuminated set
>(having a back ground that contrasts the spheres), and examining the results?
>
>Do you know of any arguments to theis concept?

I was wondering about this when we were discussing Euclid,s sphere which
was also the first example chosen by Da-Vinci. Would a mat featureless
sphere give any stereo effect even though each eye would be viewing a
different hemishere?.       P.J.Homer



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