Foo - One of the best illusions you'll ever see

http://www.ebaumsworld.com/castle-illusion.html

Holy ****. I was skeptical at first but gosh thats one of the few optical illusions that works. That rocked :D

That's kinda freaky. :eek:

Color Theory 101. Good one Vic.

I don't know nothin' bout color theory, but that was magic!

Javascript silliness.

The instructions are just there to draw your attention away from the fact that all you're doing is changing the picture that's shown when the mouse moves over the image.

Javascript silliness.

The instructions are just there to draw your attention away from the fact that all you're doing is changing the picture that's shown when the mouse moves over the image.
???

Image when mouse is over picture: here (www.ebaumsworld.com/images2/colorillusion.jpg)
Image when mouse is not over picture: here (www.ebaumsworld.com/images2/colorillusion2.jpg)

If you don't believe you're being fooled by some simple Javascript programming, try to reproduce the illusion on that second link.

jschen, I think you're simply not getting it. Stare at the dot for 30 seconds, then move the mouse back over. The colors on the 2nd image cause the color receptors in your retina (the cones) to fatigue. This temporarily causes the physiological complimentary colors to become dominant. When you move the mouse back over the image, a greyscale picture appears, but your eyes see it as full color. Not a difficult concept, but very well executed here.

<edit> - at the root of this phemonenon are chemical reactions that you are far more likely to be able to explain than I.

You're missing it, jschen. When the mouse moves over the image, it does indeed change - to black and white. The residual color in your head (or whatever) makes the image appear to be colored properly (blue sky, green grass, etc.) until you move your eyes.

Did you actually try it?

edit: damn, ninja posted along with a real explanation. <slinks away>

jschen, I think you're simply not getting it. Stare at the dot for 30 seconds, then move the mouse back over. The colors on the 2nd image cause the color receptors in your retina (the cones) to fatigue. This temporarily causes the physiological complimentary colors to become dominant. When you move the mouse back over the image, a greyscale picture appears, but your eyes see it as full color. Not a difficult concept, but very well executed here.

<edit> - at the root of this phemonenon are chemical reactions that you are far more likely to be able to explain than I.

Yea, that. When you put the mouse over the image it shows the B&W, but it looks like it is in color until you move your eyes.

jschen, I think you're simply not getting it. Stare at the dot for 30 seconds, then move the mouse back over. The colors on the 2nd image cause the color receptors in your retina (the cones) to fatigue. This temporarily causes the physiological complimentary colors to become dominant. When you move the mouse back over the image, a greyscale picture appears, but your eyes see it as full color. Not a difficult concept, but very well executed here.

<edit> - at the root of this phemonenon are chemical reactions that you are far more likely to be able to explain than I.


wtf thats totally dope, its magic and thats that

Afterimage

The most common one is of the the American flag.

Also, you know why surgery walls are painted that light green? It's the color of the afterimage of blood.

In that case, I evidently am not getting it. I did try it as described. And I don't see any afterimage. Just a sudden transition to a high contrast grayscale image.

I'll try again, though.

Okay, now I see it, after blocking out the annoying ad at the top. (I seem to have trouble focusing on a still object as that ad flashes back and forth.) That's cool!

wow... that beats any blonde joke I have ever tried to understand:p :p :p

It made me want to hurl

I talked about that in art class this year:D

There's a bunch of variations on that illusion

links:
http://wohba.com/pages/colorlogan0606.html
http://www.psy.ritsumei.ac.jp/%7Eakitaoka/zanzoe.html
http://illusionsetc.blogspot.com/2006/05/how-to-create-your-own-colorization.html

enjoy!

Like I said, it's just Color Theory.

Wanna see some real magick?

Not so much color theory as biology...

Not so much color theory as biology...

???

all you guys are dope, its magic and its dank.
thats it.
end of story

???I'm assuming you're saying 'color theory' in the sense of the basic color-wheel right? How complimentary colors can be mixed or subtracted in paints and light? In this optical illusion, it's the neurotransmitters in the retina receptors that gets depleted from being exposed to one color. Then when you change the scene, there's a "burnt-in" ghost image that remains until the neurotransmitters are replenished. The color-wheel and actual colors of the images remain constant regardless of what's going on inside the eye.

Fake! There's a real color image in there somewhere!!

Eh I just wanted to be one of those annoying guys that yells fake at everything.

This one's pretty cool too. Tiles A and B are the exact same color.

http://img111.imageshack.us/img111/3249/checkershadow4vk.jpg

It didn't work for me either, and I tried it twice. I did get a full color afterimage on the screen when I went to a white background. What's up with that?

It didn't work for me either, and I tried it twice. I did get a full color afterimage on the screen when I went to a white background. What's up with that?

Nonstop yapping about panniers and bike trunks causes temporary color blindness.

Nonstop yapping about panniers and bike trunks causes temporary color blindness.


You know, the local bike shop had some really nice panniers, really narrow, with a handle like on a briefcase so you could lift them right off your rack.

And I swear, I saw in the Performance catalog some panniers that expanded to be as big as some backpacks. And I bet if you checked them out, you might get a handlebar bag too. And have you heard about those triangular bags that fit inside of the frame?

Of course, one of the cheapest and easiest ways to carry stuff off your back are hanging plastic grocery "t-shirt" bags off the handlebars. But, if you have uncovered brake cables, make sure your bag(s) are not affecting your front brakes by making the pads ride on the rims.

And for real, lightweight convenience and manuevering ability, you could also hang those packs on a helium filled weather balloon and tether it to your bike during your ride. Of course it would tend to slow you down some and you might be pulled into traffic if the wind blows the balloon too strongly.

One last statement: check out those monster seat packs. Look like you are carrying a load, while cycling the road. . .

This one's pretty cool too. Tiles A and B are the exact same color.

http://img111.imageshack.us/img111/3249/checkershadow4vk.jpg

I really like that one. It took some looking at different angles with my laptop monitor to be sure, but pretty neat.

I should see if I can find more like that to use at work. People are always asking for color matches and giving us all sorts of different samples where the refractive properties of the ink and paper change the look of the color. I might have to modify that one and print it on a couple of different stocks to show this...

To the OP, that's a cool illusion, but hardly the coolest ever...

I print it out, then cut the paper in half to match up the squares. It really makes your eyes pop.


I really like that one. It took some looking at different angles with my laptop monitor to be sure, but pretty neat.

I should see if I can find more like that to use at work. People are always asking for color matches and giving us all sorts of different samples where the refractive properties of the ink and paper change the look of the color. I might have to modify that one and print it on a couple of different stocks to show this...

To the OP, that's a cool illusion, but hardly the coolest ever...

lol wtf

h4x.

Fake! There's a real color image in there somewhere!!

Eh I just wanted to be one of those annoying guys that yells fake at everything.

This one's pretty cool too. Tiles A and B are the exact same color.

http://img111.imageshack.us/img111/3249/checkershadow4vk.jpg
huh?

huh?
Oh snap. I wouldn't hvave believed it unless I used Pixie to see the actual hex colors., I still don't believe it. no matter what i cover up.. wtf

I made this a while back

http://img78.imageshack.us/img78/2503/checkerillusion2pb.gif

It doesn't really work to verify the illusion since it appears the color changes as the squares are brought together. :)

Still cool, I guess