Rethinking perceptual organization:
BibTeX
@MISC{_rethinkingperceptual,
author = {},
title = {Rethinking perceptual organization:},
year = {}
}
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Abstract
A principle of perceptual organization, called uniform connectedness (13C), is described, and a theoretical approach to perceptual organization is proposed inwhich this principle playsafundamental role. The principle ofUC states that closed regions ofhomogeneous properties-such as lightness,chromatic color, texture,and so forth--tend to be perceived initially as single units. We demonstrate its effects and show that they occur even when opposed bypowerful grouping principles such as proximityand similarity.Weargue that UGcannotbereduced to such grouping principles, because it is not a form ofgrouping at all.We thenproposeatheoreticalframework within whichUC accounts for the initial (or entry level) organization ofthe visual field into primitive units. Classical principles ofgrouping operate after UC, creating superordinate units consisting oftwo ormore basic-level units. Parsing processes also operate afterUC, dividing basic-level units into subordinate parts.UG in the retinal image is proposed to be a necessary, but not a sufficient, condition far unit formation, since connected elements on the retina that are perceived to lie in separatedepthplanes fail tobe perceived as units. This fact, together with otherevidence thatthe Gestalt principles ofgrouping arebased on perceived (rather than retinal) relations, suggeststhat the organization of visual stimulation intoUC objects is ultimately
