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Characterising patterns of eye movements in natural images and visual scanning

Lookup NU author(s): Lynn Gareze, Professor Julie Harris, Professor Carlo Barenghi, Dr Yoav Tadmor

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Abstract

A method to characterise the pattern of human eye movements as a person views a scene is developed. Rather than describe the spatial distribution of fixations, a new concept is introduced-crossing number-that uses a single number to describe the complexity of the eye scan. First a gaze pattern, i.e. the curve formed by joining all the points of fixation in consecutive order, is generated. The number of times that the curve crosses over itself is the total crossing number. In two different experiments free eye movements were measured during viewing of natural scenes and the performance of a specific visual task requiring an eye scan through a randomly positioned set of items. We demonstrate that there are sometimes large individual differences in crossing number that may reflect different scanning strategies used by different observers.

Publication metadata

Author(s): Gareze L, Harris JM, Barenghi CF, Tadmor Y

Publication type: Article

Publication status: Published

Journal: Journal of Modern Optics

Year: 2008

Volume: 55

Issue: 4-5

Pages: 533-555

ISSN (print): 0950-0340

ISSN (electronic): 1362-3044

Publisher: Taylor & Francis Ltd

URL: http://dx.doi.org/10.1080/09500340701470102

DOI: 10.1080/09500340701470102

Notes: 3rd European Meeting in Physiological Optics: 7-9 September 2006

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