Re: (hyper or hypo???) Oops! Sorry, wrong again!

[P3D Dr. George A. Themelis <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

>    You can even get hyper stereo, as with a telestereoscope, by 
>    cross-viewing the columns in a real building.
     ^^^^^^^^^^^^^

>Shouldn't that be *HYPO* stereo?

Sorry, I had not seen this cross-viewing! 

Being a total 3D addict, I like to freeview similar patterns like
the keys in my computer keyboard.  The keys will then appear to be
*larger*.  For the longest time I thought to myself: "Wow!  look
at this hyperstereo effect!"

Well, it turns out that there is less disparity than looking at
the keys w/out free viewing.  Which makes it a hypostereo.  Many
people confuse hyper- with hypo-stereo because the hypostereo
looks *bigger* that real life, while the hyperstereo looks 
smaller. 

Crossing the eyes, increases the disparity and makes it hyperstereo.

I realized this just the other day when I was freeviewing two 
identical cups.  Parallel viewing makes them less deep (when they
are placed at a distance equal to the distance of the eyes there
should be no depth because each eye sees the same picture!).
Cross-viewing makes them look much deeper.

Sorry for the confusion!  That's what happens when people (i.e. me!)
don't think before they post!!!!  -- George Themelis


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