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Line segregation

Line segregation Line segregation 1JACOB BECK, 2 AZRIEL ROSENFELD AND 1*RICHARD IVRY 1Department of Psychology, University of Oregon, Eugene OR 97403, USA and 2Center for Automation Research, University of Maryland, College Park MD 20742, USA Received for publication 1 July 1989 Abstract-Six experiments investigated the preattentive segregation of line-like patterns composed of discrete elements in a background of distractors. The results indicate that other factors in addition to spatial density influence line segregation. Edge alignment, edge length and principal axis orientation also affect line segregation. Differences in the outputs of Gabor filters fail to account for the perceived segregation of the lines. Possible models of line segregation based on element grouping, feature density and search are briefly discussed. 1. INTRODUCTION Global salience In a display composed of disconnected elements such as bars, blobs, dots, etc., one often perceives the display as spontaneously segregated into groups of elements. Julesz (1982), Beck (1966) and many others (e.g., Olson and Attneave, 1970) have studied examples of this phenomenon in which the groups of elements constitute regions. Beck (1967, 1972) has studied examples in which the elements of the groups are randomly interspersed; in this case, the display segregates into interspersed subpopula- tions, not http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Spatial Vision (continued as Seeing & Perceiving from 2010) Brill

Line segregation

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Publisher
Brill
Copyright
© 1989 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0169-1015
eISSN
1568-5683
DOI
10.1163/156856889X00068
Publisher site
See Article on Publisher Site

Abstract

Line segregation 1JACOB BECK, 2 AZRIEL ROSENFELD AND 1*RICHARD IVRY 1Department of Psychology, University of Oregon, Eugene OR 97403, USA and 2Center for Automation Research, University of Maryland, College Park MD 20742, USA Received for publication 1 July 1989 Abstract-Six experiments investigated the preattentive segregation of line-like patterns composed of discrete elements in a background of distractors. The results indicate that other factors in addition to spatial density influence line segregation. Edge alignment, edge length and principal axis orientation also affect line segregation. Differences in the outputs of Gabor filters fail to account for the perceived segregation of the lines. Possible models of line segregation based on element grouping, feature density and search are briefly discussed. 1. INTRODUCTION Global salience In a display composed of disconnected elements such as bars, blobs, dots, etc., one often perceives the display as spontaneously segregated into groups of elements. Julesz (1982), Beck (1966) and many others (e.g., Olson and Attneave, 1970) have studied examples of this phenomenon in which the groups of elements constitute regions. Beck (1967, 1972) has studied examples in which the elements of the groups are randomly interspersed; in this case, the display segregates into interspersed subpopula- tions, not

Journal

Spatial Vision (continued as Seeing & Perceiving from 2010) – Brill

Published: Jan 1, 1989

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