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FrozenGate by Avery

Optical Illusions

Looked like a cave at first. When I read it was a shark I saw the fins, and it was clear.
 





To me it's also interesting that the speed of the background movement seems to change.

@ARG - Stereograms.net - 3d stereogram gallery of optical illusions free magic hidden image

Here's a non moving version... had a little trouble with it;
shark1.jpg


Hello, anybody there;
telephone.jpg


EDIT: Maybe someone can explain it... but the "hard" ones are the easiest for me to see... at the same time, the "basic" was very hard to see. Having just stared at TJ's pictures again, I may be getting a slight headache... but still nada:(

Don't blink.
Look at a point in the center.
Just enough to prevent you from focusing.
Try to look 'through' the image without focusing.
Do not blink as you stare, let your vision blur.
The image will then become three dimensional and jump off your screen.
Persist and it will work for you!
Click to expand...

Edit... I have no trouble with the "complex" ones, but for some reason just can't get the more basic side by side pictures to work for me.

http://lookmind.com/illusions.php?id=736&cat=11
 
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Hmm, I can see those stationary ones just fine! couldn't see the moving one though.
 
Can see both the moving and stationary ones fine. The trick is not to force yourself to go crosseyed. Kind of just let your vision de-focus by itself, then just go ever so slightly crosseyed. Keep trying a few times, once you can catch the outline, you'll know where to look and can hold the image there. It's not like the previous 3D ones where you have to go so crosseyed you see 2 images.
 
Yes, that is how I do it. Relax the eyes but stay focus. Once you see the whole 3D object then you can admire the picture.

btw does anybody see the cave with the girl picture ?
Here are more 3D pictures from the same artist, http://3dimka.deviantart.com/gallery/
 
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With those stereograms, the method I learned long ago is to just find two pieces of the image that look alike, and cross your eyes until they match up. Your eyes will lock those two parts of the image together and you'll see the 3D.
 
^Yeah, what BB said. Although I think that produces almost a negative effect, unless that is what it is supposed to look like. My problem is that the pattern is too distracting for me to see the 3D "shapes" on complex ones. Shark, swimming shark, telephone, all easy.

Someone mentioned a video about flying through fractals.

Check out this old page google made a while back:
Julia Map

EDIT: As it turns out, googlelabs has closed its doors. A still browsable, but not as smooth and not as cool fractal map can be found here: http://gis.ibbeck.de/apps/Mandelbrot/htdocs/wms_mandelbrot_frames.html
 
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I think you guys will love this one: Strobe Illusion - Stare into the Strobe and begin to hallucinate!
(Warning! Not for people with photosensitive epilepsy.)

It reminds me of an article I read about how the brain adapts to a change in sensory input. They made people wear goggles which turned everything upside down. After a couple of days their brain flipped everything back to normal, which meant that their vision was now upside down for a several days without the goggles.
Here are some related links:
Perceptual adaptation - Wikipedia, the free encyclopedia
http://www.cns.nyu.edu/~nava/courses/psych_and_brain/pdfs/Stratton_1896.pdf
Transformation of the perceptual world

These two are not illusions but they are still fun to mess around with and quite pretty:

Barry Martin's Hopalong Orbits Visualizer - WebGL Experiment

Imagination - Play with beautiful wavy lines
​
 
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^I built one of those. In person, it only works if you have one eye closed.
 
The dragon illusion is an amazing thing. I had build one few years ago. Looks very cool.
 
About to show my nerdiness here, but anybody ever play guitar hero and get way too focused on playing the song? After the song is over, your eyes have had time to compensate for the endless notes flying towards you at a constant rate, and have zeroed that motion as motionless. So afterwards, everything you look at looks like it's morphing upwards :crackup:
 
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