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Journal Article

Binokulares Tiefensehen: Informationsquellen, Mechanismen und Aufgaben

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons84072

Mallot,  HA
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Mallot, H. (1997). Binokulares Tiefensehen: Informationsquellen, Mechanismen und Aufgaben. Neuroforum, 3(2), 50-61.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-EA14-5
Abstract
Correpondence is often considered the crucial problem in binocular stereopsis. It consists in finding the images of the same object in the two half--images of a stereogram. With correspondence solved, depth can be determined by triangulation. However, half--images differ in a number of other ways as well, which might be useful for depth perception without involving correspondence. Using intensity--based stereo and disparity--evoked vergence as examples, I will show that in these cases interocular correlation is a more likely mechanism than the purely geometrical notion of correspondence. In conclusion, a task--oriented view of stereopsis is presented. Correlation subserves relatively simple tasks such as depth ordering or vergence control, whereas correspondence is needed for fine depth resolution and figure--ground segmentation (camouflage breaking).