The Goggles, They Do Nothing

Suchetha writes "In anticipation of a slow news day i would like to direct the Slashdot hordes to Akiyoshi Kitaoka's Optical Illusions page. The page also has explanations on why/how they occur (in icky PDF format). The page is on a .jp uni server so they SHOULD be able to handle the herd of rhinos that is ./."

Comments

Coral Cache Link!

[Anonymous Coward]

Use the cache so more people can see! Thanks!

Re:Coral Cache Link!

[Anonymous Coward]

Works fine in 1.7

Re:Coral Cache Link!

[Anonymous Coward]

Why Slashdot doesn't cache, from the Slashdot FAQ

Interesting warning on the site...

[daveschroeder]

Caution: This page contains some works of "anomalous motion illusion", which might make sensitive observers dizzy or sick. Should you feel dizzy, you had better leave this page immediately.

Some of the pictures on this website can cause dizziness or might possibly epileptic seizures. The latter happens when the brain can't handle the conflicting information from your two eyes. If you start feeling unwell when using this website, immediately cover one eye with your hand and then leave the page. Do not close your eyes because that can make the attack worse.

Mirror

[alienfluid]

Here here

Google Image Search has some copies

[billstewart]

Some of these images have been copied elsewhere. Google Image Search shows some of the pictures, such as rotsnake2.gif

Slashdotted - Mirrors Here

[Kinetic]

As always, mirrors are here: MirrorDot.

Re:Only because its a university domain....

[Nos.]

Considering its static HTML (the main page) there's no reason an older machine can not stand up to a slashdotting. When we /. something is usually for one or two reasons, the most common being the pipe is full. The other reason is overloading the server (when we see things like too many mysql connections) . Rarely does the server itself actually die. I've had a PII 600 with about 256MB server several thousand hits per hour and never see the load average climb above .5, and this is php/mysql generated pages.

Sigh

[quantaman]

Only on /. does a Simpson's quote get mangled in the headling.

For future reference,

My Eyes! The goggles do nothing!

Re:Sigh

[Anonymous Coward]

Actually, the quote is:
"Ach, mein eyes! The goggles, they do nothing!"

Re:now that is crazy

[kagelump]

Explanation (the peripheral drift illusion) (PDF file)

that?

No vector files?

[Frappuccino]

The guy took off the download page for the vector files because too many people were illegally using the files. So what if I wanted to download the Adobe Illustrator file of the roating snakes to print out a giant poster on my Epson 7600?

Archive.org to the rescue!

http://web.archive.org/web/20031203215948/www.psy. ritsumei.ac.jp/~akitaoka/download.html/

This will probably get slashdotted really quick because the archive.org servers are already slow. Someone make a mirror of this page quick so everyone can have a piece!

Mirrordot to the rescue!

[nxtr]

Just use this. Just saw it on Wired. They mirror every website Slashdot news includes.

mod this up!

[Anonymous Coward]

why isnt this on the slashdot frontpage?

Re:mod this up!

[Anonymous Coward]

it's all about money. The /. editors won't cache stories themselves, because it would take eyeballs away from advertisers on the quoted pages. They probably feel the same way about some other cache site... they don't want to give it the light of day.

Re:mod down retarded

[Anonymous Coward]

Read the script! -- You, sir, are the one who is wrong.

Re:Lies!

[TrentL]

lol. But sriously, the JPEG artifacts cause the values to be *slightly* off on some pixels. But I encourage you to cut out the A square and drag it next to the B square. When they're next to each other, they look exactly the same.

Here's the direct link.

[veg_all]

rotsnakes.ai(4MB)

Re:My favorite optical illusion

[harlows_monkeys]

I did that. I still dont beleive it. It pisses me right off

What's interesting is that I blocked out the rest of the picture by covering it with other windows, leaving just parts of those two squares visible...and they STILL look like different shades.

Re:My favorite optical illusion

[jtriska]

Its actually a pretty simple illusion thats both a problem to artists as well as a useful tool.

Basically, colors always effect other colors. For example, if a gray square is surrounded by black squares, the gray square will seem much brighter than it would sitting next to other tones of gray.

If you surround the gray square with white squares, the gray square will seem much darker.

I guess you could call it the color theory of relativity.

This works with colors, not just with shades of gray. Surround a medium gray square by orange squares, and the gray square will take on a cool blueish hue (blue is complementary/opposite of orange), even if its rgb is 128,128,128.

In this optical illusion, the shadow cast from the cylinder onto the 'A' squares is affecting the appearance of the 'B' square. Its only the shadow thats causing the illusion.

Re:A practical use...

[Lord Ender]

Citing the navy isn't the best or oldest example. Think about the Zebra (or many other African animals) /just got back from a safari

Re:My favorite optical illusion

[achurch]

What's interesting is that I blocked out the rest of the picture by covering it with other windows, leaving just parts of those two squares visible...and they STILL look like different shades.

Make sure you cover up the letters, too, or the contrast (one letter is light, the other dark) will trick your brain just like the surrounding squares. I was able to see through the illusion by covering up everything but the corners of both squares.

Re:My favorite optical illusion

[gopher_hunt]

Here is the original link, along with an explanation of why this illusion works.

Link