Re: X-eyed Mountain-Dew

[P3D Larry Berlin <lberlin@xxxxxxxxx>]

>Date: Thu, 6 Feb 1997 12:57:31 -0500 (EST)
>From: P3D Dr. George A. Themelis writes:
>(quoting Grant Campos)
>>I was able to see the differences between hyper-, hypo-, ortho-,
>>and pseudo stereo, with two cans of Mountain Dew.
>
>It appears that the caffeine in the two cans of Mountain Dew that you just
>drunk has affected your brain!  ;) ;) ;) 
>
>I have hard time visualizing what you did and how you saw hyper-, hypo-,
>ortho or peudo from two cans of Mounteain Dew.

*****  I'll confirm that it works. I've done it in the past as a casual
stereo viewing pass-time. 

>(quoting Grant Campos)
>>Now, very, very slowly rotate the left one clockwise (right one, 
>>counter-clockwise, if free viewing).  The image will start out flat, 
>>become hypo-stereo, then ortho, then Hyper-stereo.
>
>By rotating you are compressing one image.  That should make the scene
>acquire deph in a linear fashion as if it was tilted.  How can you call that
>hyper-, ortho-, hypo-?

*********  At some point of alignment between the two cans each eye sees an
identical copy of the can. This is the point at which the identical pattern
will cause it to appear flat. Now as you rotate one of the cans you provide
a different angle of perspective which can progress through the full range
Grant observed. Perhaps it is the cylindrical nature of the can that helps
this to end up a workable model. Can't visualize it? Try it out with any
cans or small bottles.

Larry Berlin

Email: lberlin@xxxxxxxxx
http://www.sonic.net/~lberlin/
http://3dzine.simplenet.com/


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