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Strawberries without red pixels. Black strawberries: appearance and taste. Remontant strawberry Little Red Riding Hood, reviews from gardeners

Culture

Internet users are divided into two camps, some say they see the red tint of the strawberries in the picture, while others do not.

This image was shared on Twitter by Japanese "experimental psychologist" and psychology professor Akiyoshi Kitaoka.

The photo shows strawberries on a plate, and it looks like the picture was treated with a blue filter to make the strawberries look less red. And yet the red color is not much muted, is it?


In fact, there is not a single red pixel in this image.


Optical illusions and optical illusions

"The strawberry illusion is created using a two-color method. Even though all the pixels in this photo are green-blue, the strawberries appear red," Professor Kitaoka tweeted.

National Eye Institute visual perception specialist Bevil Conway described the image as an example of how our brains adjust the color of the world around us when another color is superimposed on it.


"If you imagine walking down the street under a blue sky, that blueness, in a sense, 'infects' everything you see around you," the professor said.

Light is an electromagnetic wave that can be different lengths(depending on color), frequency and have different speed distribution.

“If you take a red apple and look at the sky under a blue sky, more blue waves will still enter your eye,” he added.

Other Twitter users proved that there is no red in the picture. They isolated some colors that appeared to be red and looked at them against a white background. As a result, they saw only shades of gray and blue.

Pictures with optical illusions

This is not the first illusion presented by the Japanese professor. Here's another optical illusion where flower-like shapes appear to expand in size as you look at them.


And in this illusion, the circles appear to be spinning left and right when you look at them.

Social networks were “blown up” by a new optical illusion that promises to outshine - a blue-black or white-gold dress, dividing the entire global Internet into two camps, leading fierce debates about the color of the outfit. The author of the new “riddle” was psychology professor Akiyoshi Kitaoka from Japan’s Ritsumeikan University, who showed a photo of a cake with red strawberries, explaining the theory of color constancy. A snapshot of the optical illusion was posted on Twitter by University of California neuroscientist Matt Lieberman, asking followers to indicate what color the strawberry was.

Most subscribers said that the strawberries were red, but it turned out that there were absolutely no red pixels in the photo, and the strawberries were actually gray. Nevertheless, Internet users are perplexed as to how he could gray it will turn out red and asked the neurobiologist to explain the origin of the optical illusion, which has again become the subject of serious controversy.

Later, one Twitter user analyzed the photo with the gray-red strawberries and demonstrated that there are indeed no red pixels in the picture. He explained that the human brain balances White color, but as soon as it sees a blue tint, it automatically shifts all colors in the opposite direction. He also pointed out that the blue component is already contained in the light source under which the viewer looks at the strawberry, and therefore automatically subtracts it from each pixel.