P3D Re: "Hollow Face" illusion

[pd@xxxxxxxxxxxxx]

Dr. George A. Themelis writes:
> I bought an interesting item from Edmund Scientific.  It is called
> "The Living Image" and it is essentially a hollow mask (the inside
> of a mask) mounted on a display with a fluorescent tube lighting it
> underneath.  This display has some interesting properties, of
> interest to stereo vision.

George,

There is an excellent example of this at the entrance to the Haunted
Mansion ride as Disneyland/Disneyworld.  There are sculpted heads
which appear to "follow" you around the room.  The first time I saw
this, it was obvious to me how it was done, yet others were mystified
by it.  Perhaps it's a depth perception thing.

-pd

-- 
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                             Peter Davis
               Funny stuff at http://www.pfdstudio.com
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