Re: Dominating eye -> stereoblindness ???

[P3D <PTWW@xxxxxxx>]

>I put the slide in a viewer and showed it my wife explaining that this
>is what I see when I freeview the cartoons.  "Sorry, I don't understand...
>what do you mean?"  what her reaction...  "What two pictures? I only see
>ONE picture!"

>Hmmm... Houston, we have a problem... ;)

Problem?  I thought that was the whole purpose of looking at stereo slides
through the viewer, or even of freeviewing...to perceive two pictures
as one!

>I asked her to alternate eyes but she said she cannot do it.  I pointed
>at one specific difference.  "Does the bird have a long or short beak?"
>She forced one eye closed and then the other.  Now she could see that
>there are two pictures involved but with both eyes open she could only
>see the long beak which was the LEFT picture and had NO clue that there
>was a second different picture involved.

What happens if you reverse the slide?  Does she still see only the long
beak, which would now be in the right view?  Or only the short beak?

>For me, it is clear that I am looking at two overlapping pictures with
>some minute differences.

This would seem to tell us that you have a higher sensitivity to retinal
rivalry than your wife, which IMO is consistent with your high sensitivity
to mounting errors in slides viewed through a viewer.  I'm not convinced
this is related to the ability to reconstruct 3D space.

>Now, my wife does _not_ enjoy stereo as much as I do.
                                      ^^^^^^^^^^^^^^^
Hmmmm.  Imagine that.  You know, I heard Michael Jordan's wife doesn't
enjoy playing basketball as much as he does either.  ;)

> (BTW, is that a valid reason for divorce??? ;) ;) ;))

Absolutely!  I'll bet any judge would be very sympathetic to her complaints!
"He uses me as a subject for science experiments, and publishes the results
on the internet!!!"  ;) ;) ;)

> In the past she has managed to
>pass my standard stereopsis tests (how about these being part of a marriage
>test???)  but with some hesitation (needing more time to read stereopsis
>-based hidden messages)

Is there some info about these available on Intro-3d?

>I have heard some talk about "dominating eyes".  Can that explain the
>very different people's reactions when exposed to stereo images?  Are
>people who have one "strong" (dominating) eye less impressed by stereo
>than those who have "equal strengths" in both eyes?

I don't think it is possible to ambiretinal, or whatever you might call
it.  I wonder if you're in the "right church, wrong pew?"  I don't see
the mere fact that one has a dominant eye, or whether it is right vs.
left, as being related to perceiving depth in stereo images.

Paul Talbot


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