Stereograms are for staring. Also sometimes known as Stare-o-grams. Stereograms are a type of random dot image that tricks the eye so that it sees a 3D image. The dots need not be just dots... they can be replaced with small images. It's the arrangement of these points of attention that the brain tries to make meaningful.
Click here to get an easy-to-see Stereogram made of these small images.
Here is another neat example; you may have noticed it before...
... and This one is one of my favorites. Here is a great idea , I think, but for me it's difficult. Sometimes it 'comes in' properly and sometimes it doesn't! Here is a classic [off-site]. This one is interesting, click here... it's also a book... see Amazon.com elsewhere on this page.
Stereograms are not like the familiar pictures one
views with 3D viewers 
or with 3D glasses.
The image one perceives by staring at them is generated when the brain tries to make sense
of the patterns.
Also, Stereograms are not like these... after you click here, cross your eyes slightly & wait for the middle picture to form... (This is the Chinese character "ai" it means "love" Wo ai ni means I love you). This one shows that even with two low quality pictures, you can see a better one, in stereo.
Cross your eyes to see this
one , it's not too difficult...
cross your eyes to see this
one! , it's easy and really neat. This is a nanotechnology differential gear made of just a bunch of atoms. (It's not real -- yet, but it will
be. Here is a larger version. It's at this a web site which is about nanotechnology:
http://www.imm.org/Parts/.
And here and
here are more!
Another way to see 3-D from a flat surface is for the surface to somehow reconstruct the wave front of light that the real object would reflect if it were present. White light HOLOGRAMS can do this. This one was scanned in with an ordinary scanner, frame and all. (Of course you can't get the three dimensional effect on your screen, but this gives you some idea of what it looks like. In the original hologram, when you move your head from side to side, you can see somewhat AROUND the 'object' just as happens in real life -- as if the object were there.)
Photographing a person's
face with a cone-shaped mirror in front of the lens creates a
distorted, doughnut- shaped image (left). The cone provides two
extra perspectives of the face on opposite sides of the center
point, providing enough information to construct a 3-D model.
LINK:
Jan Ottley
Computer Vision Lab., Columbia Univ.
Count them... wait for
the image to move !
Next page: Interesting illusions
Voigtlander Stereo Camera
3-D 35mm camera tested on the International Space station, 2003
Albert Einstein.
If you stand 15 feet away,
It will become Marilyn Monroe.
Two images taken within 10 minutes
of each other by the Mars Reconnaissance Orbiter. Use
Wind on Mars - Cross your eyes...
This image was acquired at the Phoenix landing site on
day 13 of
the mission on the surface of Mars, Sol 12.
June 2008 Source:
nasa.gov
@ Com
2009
Next page: Interesting illusions
Grumpy Guru of the Cathedral Rocks Photo
ChipStephan
1 Km from Yosemite Village, California USA
Microscopic faces of Barack Obama made using nanotechnology, and imaged using a
scanning electron microscope. Each face consists of millions of vertically-aligned carbon
nanotubes, grown by a high temperature chemical reaction.
Next page: Interesting illusions
This image was found on Google Earth
Benoit Mandelbrot family
2D, 3D, 4D? 3.7D??...More or Less D's??? ~ press here...Fractals-1 Fractals-2 Fractals-3 Search for Mandelbrot