Optical illusion : are these two photos of a street identical?


"Roads in Mexico" par le français Daniel Picon

The picture of a cobblestone road lets those who watched it scratch their heads. In fact, the image displays two photos side by side with one and only one image of the road, however, side by side, it makes us want to think that it is indeed the same street photo, but not from the same angle of view.


"Credit: Daniel Picon

At first glance, it seems that the two images are taken from a different angle and/or at a different height, but if you look at them more closely, you will see that they are perfect replicas of each other, however different they may seem. This image is a perfect example of the power of our brain that can change what we think we see.

On Reddit, where the photo was posted, the user “Saberfox” explains:

“I can say it’s the same image, but something makes my brain unwilling to believe it.”

Video credit: Indy100

Also, an explanation of what is happening was proposed by the user “All-Cal” always on Reddit:

“This is because the two streets meet at the bottom of the images. Your brain tries to perceive it as a single image with a forked street and therefore the street of the left image must be at a different angle from the right image [for your brain].”

The images were uploaded to Imgur, and have accumulated more than 2 million visits in 2 days. There are a number of other examples of similar optical illusions around the world. Architects often use this kind of illusion in buildings to attract tourists.

Crédit: Interesting Engineering

Another fairly similar example is the illusion of the “wall of coffee”, discovered by British psychologist Richard Gregory. The black and white tiles look curved while they are perfectly straight. It’s again because of the way brain neurons interact with the scene.


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