Sonic World - Stereogrammes

Stereograms

This section only has the motive to make you aware of one of the most wonderful of your abilities which you may be unaware of.
It is nothing but seeing a 2-D picture as perfectly 3-D with your naked eyes...

What are Stereograms?

In simple words stereograms are computer generated pictures that when viewed by our two eyes in a certain method appears 3-D. If you are interested to know more about it read below else skip to "How to see them 3-D" .

Technically, any stereo picture, but in recent years this term has more commonly been used to refer to computer generated Single Image Random Dot Stereograms. A long name, isn't it? That's why Single Image Random Dot Stereograms are also called S.I.R.D.S. At this site, the term "stereogram" is used only to refer to S.I.R.D.S. RANDOM

SINGLE IMAGE RANDOM DOT STEREOGRAM (S.I.R.D.S.):a computer-generated stereogram in which the depth information is combined into a single image. The first single image random dot stereogram was programmed on an Apple II computer in 1979 by Maureen Clarke and Christopher Tyler.

DOT STEREOGRAM:The prototype for S.I.R.D.S. and Magic Eye stereograms was invented in1959 by Bela Julesz, vision scientist and recipient of the MacArthur Award (a.k.a., the "genius" award). With the random dot stereogram, Dr. Julesz created a computer-generated image that could be perceived only with binocular (two-eyed) depth perception. In one interview Dr. Julesz was quoted as saying he dreams of inventing a tactile version of the random-dot stereogram, so blind people could experience them. Is this guy cool or what? Of course, random dot stereograms are pretty cool, too.

How to see them as 3-D?

Stereograms can be easier to see if viewed on paper rather than a computer screen. If possible, print out this image and follow the instructions below. (You don't need to print in color).

Instructions: Hold stereogram RIGHT UP TO YOUR NOSE and STARE through it as if looking off into the distance. The image will be blurry, try not to blink. Move it VERY SLOWLY away from your face until the two circles above the image turn into three. If you see four circles continue to move the image away from your face until you see only three circles. At this point hold the image still until the 3D illusion slowly comes into focus and the hidden object magically appears! In this example the hidden image is a STAR. The longer you look, the deeper and clearer the hidden image will become. Good Luck!

Example Stereogram

More stereograms

Click on the below links to view them in a new window..

3 Rings
Candies
Dinosour
Fishes
Saturn
Shark
Spring
Tunnel

Useful Links

To learn more about stereograms visit the below listed sites.

http://www.magiceye.com

http://www.vision3d.com

http://www-ai.ijs.si/sirds/SirdsFaq.html

Bibliography

http://www.magiceye.com

http://www.vision3d.com

I have taken all the stereograms in this section from the above listed sites.

LINKS