When1: 1962
When2: 1971
Who: Bela Julesz [Julesz, Bela]
What: psychologist
Where: USA
works\ Towards the automation of binocular depth perception [1962: with J. E. Miller]; Foundations of Cyclopean Perception [1971]
Detail: He lived 1928 to 2003. Picture with random, identical, featureless dots {random-dot stereogram} {random dot stereogram} (RDS) [1971] can make perceivers see object surface lying in front of background surface or see three-dimensional object {stereopsis, Julesz}. RDS has no monocular depth cues, so only cyclopean stimuli signal depth. Object and background have same hue and brightness. Stereoscopic fusion and depth do not need recognizable objects or line features.
If dots fall randomly on surfaces with different-color regions, dots fall on colors with specific frequencies {first-order statistic} [1962]. Randomly thrown needles fall on color combinations with specific frequencies {second-order statistic}. Randomly thrown triangles have specific frequencies with which the three vertices fall on color combinations {third-order statistic}. Texture discrimination processes, which happen before attention processes, use first-order and second-order statistics but not third-order statistics. Similar textures have identical second-order and first-order statistics. Second-order texture classes are many.
Social Sciences>Psychology>History>Perception
6-Psychology-History-Perception
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Date Modified: 2022.0224