Subject: Random Dot Stereograms

From: [email-masked] (WILLIAMSON, JOHN EDWARD)
Date: 17 Jul 92 06:01:00 GMT

The BEST source of information on random dot stereograms is from the
man who "invented" them, Bela Julesz.  Go to you library and look
for a copy of his book _Foundations of Cyclopean Vision_ (1971) University
of chicago press.  It has hundreds of random dot stereograms (both side 
by side pairs and anaglyph) along with a very detailed description of the
theoretical and psychological aspects of how random dot stereograms work.

Also look at Introductory, perctual, or experimental psychology
textbooks published after 1975.  Nearly everyone of these books will
have at least a very short section on random dot stereograms.

You can create your own very crude random dot stereograms with most
paint programs or write your own 10 line basic program.  Take the
spray can tool and randomly fill in a section, copy this section
and place it to the right, exactly parallel with the original.  Then
copy a square (or other shape) from one side and slide it over about
1/4" and past it down.  You will have to play with the size of the images
but it will work.

---

From: [email-masked] (David Hucaby)
Date: 8 Mar 93 18:37:08 GMT

In article [email-masked], [email-masked] (Russell Caslis) writes:
|
|As a final in one of my computer graphics classes, we are supposed to discuss
|how to create random dot stereograms.  I can't even get a 3d feel to them
|myself.  :-(
|
|Anyway, would anyone be willing to give me a basic overview of how this is
|done?
|
|
|--
|Russ Caslis
[email-masked]

You can find the early paper on random dot stereograms: "Automatic Stereoscopic
Presentation of Functions of Two Variables" by Julesz and Miller, The Bell
System Technical Journal, March 1962, pp. 663-676.

On another note, there is a one page paper "Stereoscopy without instruments:
A Training Device" that describes how to free view any printed stereo image pair.
This appeared in Radiology, June 1985, page 826.

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