Deakin University
Browse

File(s) not publicly available

Visibility of arcs as a function of radius and chord orientation

journal contribution
posted on 1975-01-01, 00:00 authored by Boris Crassini, R Over
An arc with a vertical chord becomes less visible at brief exposures as its radius is decreased. Tilting the arc by 45° so that its chord is at an oblique orientation improves the visibility of an extremely curved line and lessens the visibility of a slightly curved line. To explain these results it is assumed that arcs are processed in the visual system by reference to orientation gradients rather than on the basis of global curvature. In these terms changes in the visibility of an arc with variation in radius and chord orientation represent special cases of the effect by which oblique straight lines are less visible than vertical straight lines. 1975 Australian Psychological Society

History

Journal

Australian Journal of Psychology

Volume

27

Issue

2

Pagination

143 - 149

ISSN

0004-9530

eISSN

1742-9536

Usage metrics

    Research Publications

    Categories

    No categories selected

    Keywords

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC