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World of the Bizarre

Exactly what color are these strawberries ?

By T.K. Randall
March 1, 2017 · Comment icon 27 comments

What color are these strawberries ? Image Credit: Twitter / Akiyoshi Kitaoka
An intriguing optical illusion involving a plate of strawberries has been doing the rounds online.
Originally posted on Twitter by experimental psychologist Professor Akiyoshi Kitaoka, the photograph shows a plate of the popular summer fruits with a bluish color filter applied.

The question that has been puzzling the Internet is - what color are the strawberries ? At a casual glance they do appear to have a reddish tinge - but is this really the case ?
The answer, according to Kitaoka, is that the entire picture is actually made up of blue-green pixels, meaning that the reddish appearance of the strawberries is nothing but an optical illusion.




Source: Inverse.com | Comments (27)




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Recent comments on this story
Comment icon #18 Posted by paperdyer 8 years ago
No optical illusion here.  Just science fact.  A blue filer will only let blue light through it. You can do an experiment using a prism and a projector.  You split the light from the projector using the prism then put the colored filters either between the light and prism or in front of the prism and see what happens.  The filters need to be fairly dark but still transparent, typical of what you get in the stained glass kits.  I do a talk on this at our Color Schools we run for our customers.  I'd post it but it's too large.  If anyone's interested I can pdf it and email it to you.
Comment icon #19 Posted by XClashGames 8 years ago
Grey, the strawberries look grey and everything else looks blue. There is definitely 'red' pixels but that is likely down to the quality loss due to the copying of the image.
Comment icon #20 Posted by Chaldon 8 years ago
It's the normal white balance adaptation of the human eye. The brain interpolates all the colours it sees to "calculate" the colour of the light (neutral grey), all the other colours are then "calculated" by difference from that average colour. That psychologist probably knows too little about neurophysiology. This is how Gimp "fixes" the white balance using the same basic principle as our brains. The sunlight constantly changes its tint, but all the primates must be sure about colours, for example, to differentiate a ripe fruit from green or, say, blushed cheeks from pale, that's why the brai... [More]
Comment icon #21 Posted by FlyingAngel 8 years ago
Color is the sum of everything + light that hit our eyes. It's not about pixel by pixel
Comment icon #22 Posted by third_eye 8 years ago
Reminds me of this little experiment ... ~ [00.01:24] ~ Spoiler An example of the red spade experiment conducted by Bruner and Postman.   psyclassics yorku ca link   ~  
Comment icon #23 Posted by Parsec 8 years ago
Well, that's the power of your mind!   Next: how to bend a teaspoon.   Last step: how to make goats explode!
Comment icon #24 Posted by Farmer77 8 years ago
How about lamb? Ive been craving a gyro 
Comment icon #25 Posted by Parsec 8 years ago
Well, if you also manage to cook it in the process, I don't see why not! 
Comment icon #26 Posted by Brassboy86 5 years ago
I call BS, I downloaded said i.age and zoomed in on the strawberries up to 800x and they definitely contain red color information. I went a step further and stripped said color information and the berries turned a dark greenish blue. Optical illusion my ***
Comment icon #27 Posted by Brassboy86 5 years ago
Gyro is lamb, goat and some herbs and spices. It's technically a sausage made from multiple animals. Not just lamb. Albeit it is more lamb than anything else.   


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