View Full Version : Optical illusions

yellowish haze
07-17-2006, 10:11 AM
It seems we havenít had a thread about illusions yet Ė illusion being an important aspect of TLís fiction. A few years ago I was quite fond of autotereograms (http://en.wikipedia.org/wiki/Autostereogram) and have recently decided to make some of my own.

Here is one which has been done especially for TLO.
(for those who donít know how to view stereograms, please, read these instructions http://www.wikihow.com/View-Stereograms )


Now my question is: what does this autostereogram represent and where does the (3-D) image come from?

yellowish haze
07-21-2006, 10:20 AM
Oh, I have forgotten to add that in order to see the hidden image properly you have to click on the photo to enlarge.

Here is the answer to my question:


Dr. Bantham
07-25-2006, 11:31 PM
Alas, this trick of light falls short in the shadows of my eyesight. I had both of my eyes operated on simultaneously three years ago, and such exercises eventually induce nauseating flashbacks of my dream demise. My retinas had weathered into the tattered gowns of a blind beggar. Give me some light!

A splendid construct, nonetheless. Does it work for folk with normal ocular ability?

07-26-2006, 09:41 AM
I was unable to see it!! Was anyone else able to see it??

yellowish haze
07-29-2006, 02:00 PM
A splendid construct, nonetheless. Does it work for folk with normal ocular ability?

Thanks. This should work for everyone with normal ocular ability. It's only a matter of practice and patience. If a person needs glasses to read, he'd better use them while viewing stereograms.

My interest in optical illusions has recently become very time consuming. At present, I'm very much fond of anaglyphs - 3-D pictures for which one needs these famous red-green (or red-blue) glasses. They are very easy to make and the final result is incredible. Last week I've designed approximately 200 of such pictures and I'm still wondering why aren't anaglyphs more popular. No matter how much one is fond of 2-D photography, I think that anaglyphic photography is the best way to perpetuate a moment.

Has anyone got these 3-D glasses?

G. S. Carnivals
07-29-2006, 02:44 PM
Has anyone got these 3-D glasses?
I have a pair or two somewhere. One from National Lampoon about thirty years ago when they published a 3-D issue, and one from TV Guide not long ago. Many years ago, on a Friday night (perhaps around Halloween) a Detroit television station ran an early 1950s 3-D movie (I do not recall which one) with much publicity and distribution of 3-D glasses. I drunkenly and stonedly sat through the movie on television with my glasses on. Not one thing flew at my face. I later caught on to the actual process involved in projecting a motion picture in 3-D.

In 3-Duh,

G. S. Carnivals
08-11-2007, 03:53 PM
Eureka! Earlier today I discovered (by accident) my pair of 3-D glasses from TV Guide. They were issued to promote a 3-D episode of Medium (in either 2004 or 2005). I've carefully assembled the spectacles. The front sports a third eye between the red and blue lenses! The wings are audacious in their advertising, for both the magazine and for the program.

At last I've been able to fully enjoy the 3-D images at

My favorite is a photo of Slawek himself holding out a pair of 3-D glasses! *stand back, sir!* Homemade 3-D glasses may be approximated by taping to the eyebrows squares of cellophane which cover the eyes. Be sure that the left eye looks through red. Be sure that the right eye looks through blue. Staples are not recommended! If mishaps occur, please refer to Frank Zappa's Theory of No-D.

Just call me sixeyes,

yellowish haze
08-12-2007, 08:21 AM
Thanks for checking the anaglyphs, GSC. Don't forget to click on the photos to enlarge (and some people do) to see the full effect. The entire gallery is here:

These anaglyphs look best when you have appropriate red-cyan glasses. There is a special 3D test which allows you to see if your glasses are ok:


yellowish haze
08-12-2007, 09:09 AM
Thanks for checking the anaglyphs, GSC. Don't forget to click on the photos to enlarge (and some people do)Of course that's a mistake. I meant to say: some people forget to do so...

08-14-2007, 03:22 AM
Autostereograms always frustrated me. I think I've been successful maybe once in my whole life. Then again, I can't blow bubble gum bubbles, either! :confused:

Sort of on the subject, I found this (http://communities.canada.com/reginaleaderpost/photos/petrie/images/99111/original.aspx) a couple weeks ago. I haven't trusted my sense of sight since I first saw optical illusions like these as a kid. It always amazes me to think of how much goes on that completely defies perception.