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The Oxford Compendium of Visual Illusions$
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Arthur G. Shapiro and Dejan Todorovic

Print publication date: 2017

Print ISBN-13: 9780199794607

Published to Oxford Scholarship Online: June 2017

DOI: 10.1093/acprof:oso/9780199794607.001.0001

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Weighted Positional Averaging in the Illusions of the Müller-Lyer Type

Weighted Positional Averaging in the Illusions of the Müller-Lyer Type

Chapter:
(p.159) Chapter 11 Weighted Positional Averaging in the Illusions of the Müller-Lyer Type
Source:
The Oxford Compendium of Visual Illusions
Author(s):

Aleksandr Bulatov

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199794607.003.0011

The limited ability to estimate properly the linear extent or spatial separation of objects is one of the well-tested and documented features of visual perception. However, despite a large amount of experimental data collected in various studies of the Müller-Lyer illusion and related visual illusions of extent, the generally accepted view concerning the origin of this phenomenon is still absent. This chapter addresses a possible role of the perceptual positional shifts of the stimulus parts in occurrence of the illusions. It also discusses the most important features of the computational model based on the hypothesis of positional coding via centroids.

Keywords:   visual illusions of extent, positional shift, centroid, Müller-Lyer illusion, computational model

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