Re: Stereo Window - Poll time!

[P3D Larry Berlin <lberlin@xxxxxxxxx>]

>Date: Fri, 20 Jun 97 
>From: P3D John Bercovitz writes:
>
>Some things to keep in mind during your deliberations.
>Convergence is a weaker depth clue so don't think of the
>eyes as triangulating on something to find its distance
>unless it's very close.  (Extremes of convergence will 
>have an effect.)  The eyes/brain will establish their own 
>infinity from scene context.
>

*****  This comment is interesting. I'm inclined to see convergence as a
rather strong clue in stereo images particularly. Perhaps it is because a
stereo image is in fact a close object, though signifying a larger scene
through relative interpretations? Or is it because I have learned to use
convergence to a greater than normal degree? (in which case I urge anyone to
develop that greater sensitivity!)

The fact that the *eye/brain will establish their own infinity from scene
context* is the mechanism by which a base for detailed relative
triangulation is established. I have always felt that even for persons who
haven't developed this sense, that it was there functioning on more
subconscious levels. It's the fact of it's usually unacknowledged presence
that makes it possible to easily develop the sense to a finer degree.

Larry Berlin

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


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