Cyclopal picture

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Cyclopean image - a single mental image of the observed scene created by the brain by combining two flat images obtained from both eyes. The mental process responsible for its construction is essential for stereoscopic vision. Autostereograms use this process to deceive the brain, creating a cyclopathic picture of apparently random patterns.

The name came from the mythical Homer's Odyssey, a single-eye creature, and refers to the way in which normal people perceive the center of binocular vision as lying between their eyes as if seen through the eye of a cyclopian. Other terms of the cyclopaedia eye are "third central imaginary eye" and "binoculus" (English wikipedia).

The term "cyclopathic stimulus" refers to such a form of visual stimulus, which is determined solely by the divergence of images from two eyes. This name was created by the Hungarian engineer Béla Julesz. He thought that stereopathy could help to see camouflaged objects. An important aspect of his research was demonstrating stereograms from random dots (RDSS) that the differences in displacement were sufficient to produce a stereoscopic effect. For other results, Charles Wheatstone showed that it required bifurcation to do so.

The statement "cyclopathic stimulus" is ironic because cyclops would not be able to see it. With only one eye, he could not see the diaphragm depths (such as discrepancies between right and left eye images).

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