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- Newsgroups: comp.graphics
- Path: sparky!uunet!panther!mothost!white!sapphire.rtsg.mot.com!graphite20!dalessio
- From: dalessio@rtsg.mot.com (Mario D'Alessio)
- Subject: Re: New stereogram technique
- Message-ID: <dalessio.721340799@graphite20>
- Sender: news@rtsg.mot.com
- Nntp-Posting-Host: graphite20
- Organization: Motorola Inc., Cellular Infrastructure Group
- References: <dalessio.720998995@feldspar28> <1992Nov6.101343.1@kean.ucs.mun.ca>
- Distribution: usa
- Date: Mon, 9 Nov 1992 20:26:39 GMT
- Lines: 58
-
- dstewart@kean.ucs.mun.ca writes:
-
- >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.
-
- The address for N.E. Thing Enterprises is:
-
- N.E. Thing Enterprises
- 19A Crosby Drive
- Bedford, MA 01730
-
- Mario
-
-
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