Rogue Keeper on 20/6/2006 at 14:45
Sorry, but nobody has provided a better explanation yet, only "not true" statements.
trevor the sheep on 20/6/2006 at 14:49
It'll be something to do with the cones being bleached by staring at the colours of the image so you'll have an image in your mind of the inverse colours. Just putting the images from the site over the top of each other will do fuck all because it's an OPTICAL ILLUSION.
BEAR on 20/6/2006 at 14:52
Someone in IRC linked to a SA thread with that, and I was trying to re-find it so I could show it to someone, so thanks ;) As soon as I saw the thread title it reminded me I had promised to send it. Pretty damn cool BTW. :thumb:
Rogue Keeper on 20/6/2006 at 14:53
That sounds like 6th grade version of what I was suggesting... In my mind. :p
Stitch on 20/6/2006 at 15:06
If by "6th grade version of what I was suggesting" you mean "completely accurate version as opposed to the utterly wrong theory I was suggesting" then yes.
Since when has overlaying grayscale on a color image inverted the colors? Who needs transparent foils to prove that wrong?
In other news, this illusion rocks.
Rogue Keeper on 20/6/2006 at 15:11
In other news, the "negative" version is not exact negative of the original picture. Kiss!
trevor the sheep on 20/6/2006 at 15:14
IT ISN'T? OH GOD HOW DO WE EXPLAIN THIS ONE
COULD IT HAVE SOMETHING TO DO WITH
THE
GRAYSCALE?
of course not, it just proves your theory right doesn't it.
stupidest argument ever!
Stitch on 20/6/2006 at 15:17
Quote Posted by BR796164
In other news, the "negative" version is not exact negative of the original picture. Kiss!
That's true, although it does nothing to support your theory. Trevor's explanation is still at work, the colors have simply been tweaked for maximum visual impact.
Trevor: BR427844's point, I think, is that if you invert the inverse color picture you don't quite get a normal castle with a green lawn and blue sky.
trevor the sheep on 20/6/2006 at 15:21
Yeah I checked, I think that the greyscale will have something to do with that, and that most cones are at the point of focus and not in the peripheral vision. Guess who done a human biology exam this morning?
Rogue Keeper on 20/6/2006 at 15:23
Fine.
(
http://digg.com/science/Amazing_Optical_Illusion_of_a_B_W_photo_that_colors_a_picture_in_your_brain_2)
Quote:
You guys are close on the effect. This is actually caused by an effect known as the opponent color theory. Basically for every neurochemical related to a particular color there is an opposite one for the opposite color. These are interdependent and work in cooperation to allow you to see colors. Each neurotransmitter is generated by your cells at a normal rate and they are normally in balance. When you are staring at the picture you are depleting the neurotransmitters used for those particular colors. When the colors go away (when you hover over for the b&w picture) the opponent color can now overwhelm the depleted opposite neurotransmitter. The desaturated b&w picture provides shading and the opposite transmitter simulates the colors. In a moment the depleted neurotransmitter returns to its normal level and regains balance with its opponent.
I'm off.
