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Bela Julesz : ウィキペディア英語版
Béla Julesz

Béla Julesz (February 19, 1928–December 31, 2003) was a visual neuroscientist and experimental psychologist in the fields of visual and auditory perception.
Julesz was the originator of random dot stereograms which led to the creation of autostereograms. He also was the first to study texture discrimination by constraining second-order statistics.
==Biography==
Béla Julesz was born in Budapest, Hungary, on February 19, 1928. He immigrated to the United States with his wife Margit after receiving his Ph.D. from the Hungarian Academy of Sciences in 1956.
In 1956, Julesz joined the renowned Bell Laboratories, where he headed the Sensory and Perceptual Processes Department (1964–1982), then the Visual Perception Research Department (1983–1989). Much of his research focused on physiological psychology topics including depth perception and pattern recognition within the visual system.
In 1959, Julesz created the random-dot stereogram using pairs of random dot patterns that were identical except for slight differences in the horizontal position of a subset of dots. When these patters were viewed one to each eye via a stereoscope, the subset of dots appeared to be at a different depth from the remainder. Julesz referred to this, whimsically, as ''cyclopean vision'', after the mythical Cyclops, a creature with a single eye in its forehead instead of the usual two. This was because the shape of the depth area was invisible to either eye separately; it is visible only to the ''cyclopean eye'' of stereoscopic perception that combines the information from the two eyes. Later, Christopher Tyler, a former student of Julesz, used the principles of random-dot stereograms to invent autostereograms, which create the same effect using a single image instead of two.
Julesz made important contributions to the theory of human visual perception of texture. In 1962 he originated the Julesz Conjecture, which states that humans cannot distinguish between textures with identical second-order statistics. In 1973, he proved this conjecture false, though the concept that image textures could be modeled based on low-order statistics remained. In 1981, he originated the Texton Theory, which states that textons, composed of local image features, are "the putative units of pre-attentive human texture perception".
In 1989, he retired from Bell Labs and began teaching in the Psychology department at Rutgers University in Piscataway, New Jersey. It was there that he established and directed the Laboratory of Vision Research, which was dedicated to investigating mechanisms of stereopsis, motion, binocular vision, texture perception and attention. The lab helped establish cognitive science, neuroscience, and vision science as important fields of study at Rutgers. Julesz became professor emeritus in 1999, and remained the director of the lab until his death on December 31, 2003.

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