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- Newsgroups: comp.graphics
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!torn!csd.unb.ca!morgan.ucs.mun.ca!kean.ucs.mun.ca!dstewart
- From: dstewart@kean.ucs.mun.ca
- Subject: Re: New stereogram technique
- Message-ID: <1992Nov6.101343.1@kean.ucs.mun.ca>
- Lines: 34
- Sender: usenet@morgan.ucs.mun.ca (NNTP server account)
- Organization: Memorial University. St.John's Nfld, Canada
- References: <dalessio.720998995@feldspar28>
- Distribution: usa
- Date: Fri, 6 Nov 1992 12:43:43 GMT
-
- In article <dalessio.720998995@feldspar28>, dalessio@rtsg.mot.com (Mario D'Alessio) writes:
- > In the mail I just received an advertisement from N.E.
- > Thing Enterprises, the makers of "Stare-EO", the random dot
- > stereogram creator. On the front is a stereogram of a
- > frog. But the cool thing is that when you view the image,
- > you can't detect any "layers" in the image.
- >
- > Those of you who viewed the stereograms posted here before
- > know that the stereograms are created from layers. A sphere
- > is actually created of layered circles which can be easily
- > detected. With the new technique, you'll see a smooth sphere.
- >
- > The ad states that it uses the "Salitsky dot". Does anyone
- > know anything about this? How about a program that uses
- > it?
- >
- > Thanks.
- >
- > Mario
- >
- Random dot stereograms were invented by Bela Julesz at the Bell Labs
- in the late 60's. From the point of view of theories of vision they were
- significant in that they demonstrated that retinal disparity is a
- sufficient condition for depth perception. Analysis of the depth effects
- in RDS's contributed to emerging computational theories of vision (see
- Marr's book, _Vision_, for example). One of the features of RDS's is the
- "smoothness" of contour you speak of. A very impressive example is
- Julesz's hyperbolic paraboloid surrounded by a torus which was in his book
- and is also in Frisby's _Seeing_.
-
- Would you post the address for the N.E. Thing people. I don't know
- what a "Salitsky dot" is>
-
- Dan Stewart.
-