Friday, November 28, 2008

Shape Distortion Illusion

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This illusion is known as the Café Wall illusion, and it was first discovered by Richard Gregory's laboratory in a café in Bristol, in the U.K. The black and white tiles are perfectly straight, but look tilted. It is a shape distortion illusion: an object will appear to take on shapes that are different from its actual shape. Like brightness and color illusions, shape distortion effects are also produced by the interaction between the actual shape of the object and the shapes of nearby figures. For the brain, perception is very often dependent on context.

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