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Your Eyes Are Liars: These Strawberries Aren’t Red


The following is an excerpt from Michelle Starr | March 1, 2017 | CNET.com |

Perception is a funny thing. Visual signals need to be interpreted by the brain, which fills in the gaps of what we're seeing with our eyes so that we can make sense of the world around us. The Dress, which had the internet in a tizzy two years ago, was a perfect example of this. Because of the lighting in the background of the image, many people interpreted its colours as white and gold instead of blue and black.

Something similar is going on with this picture of strawberries on a pie, created by Akiyoshi Kitaoka, professor of psychology at Ritsumeikan University in Japan, and optical illusion artist. Believe it or not, there is not a single red pixel in it.

This is because of a phenomenon known as "colour constancy". You may have seen optical illusions that task you with determining which of two areas in an image is darker, but it turns out they are both exactly the same shade.

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