Magic eye bela julesz biography

  • Magic eye posters from the '90s
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    THE FIRST RANDOM

     dot stereogram was invented by Dr. Bela Julesz in 1959 as an experiment to test stereopsis, the ability to see in 3D. Read more about the history of stereograms here LINKLINKLINK. By using a random dot pattern, Julesz eliminated the depth cues that are inherent in recognizable images.

    Consider this example. First create a rectangle of randomly arranged dots. (fig 1). Within that rectangle select a group of dots that make up a small shape. In this example the small shape is a circle and the selected dots are the dots that fall within the blue circle. (fig. 2).

    Next, create a new rectangle identical to the original rectangle, except that the dots within the small shape have been shifted to the left. (fig. 3). When the two rectangles are viewed together as a stereo pair, the image of the circle appears to float above the background. (fig. 4).

    In 1979 Christopher Tyler discovered that the offset scheme could be applied to a single image. This

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    The Hidden History of Magic Eye, the Optical Illusion That Briefly Took Over the World

    This story is part of our Weekend Reads series, where we highlight a story we love from the archives. It was originally published in issue #02 of Eye on Design magazine.

    For a flash in the 1990s, Magic Eye, the world’s most famous—and infamously frustrating—optical illusion, was everywhere. Posters bearing the brightly colored op-art hung from the walls of Midwestern mall kiosks. Postcards filled gift store racks. Books with taglines like “A new way of looking at the world,” lined and then disappeared from store shelves as people snatched up more than 20 million copies of the series.

    Magic Eye was something of a paradox: a deliberate graphic mess that relied on grids and precision to achieve its intended effect. The fact that it was so difficult to see the 3-D shape hiding behind the hypercolored patterns was a major part of its appeal. To find the secret image, people adopted a signature

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    Random dot stereogram

    Type of 3D image

    A random-dot stereogram (RDS) is stereo pair of images of random dots that, when viewed with the aid of a stereoscope, or with the eyes focused on a point in front of or behind the images, produces a sensation of depth due to stereopsis, with objects appearing to be in front of or behind the display level.

    The random-dot stereogram technique, known since 1919, was elaborated on by Béla Julesz, described in his 1971 book, Foundations of Cyclopean Perception.

    Later concepts, involving single images, not necessarily consisting of random dots, and more well known to the general public, are autostereograms.

    History

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    In 1840, Sir Charles Wheatstone developed the stereoscope. Using it, two photographs, taken a small horizontal distance apart, could be viewed one to each eye so that the objects in the photograph appeared to be three-dimensional in a three-dimensional scene.

    Around 1956, Béla Julesz initiated a project at Bell

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