Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Performance of visual search tasks from various types of contour information

Not Accessible

Your library or personal account may give you access

Abstract

A recently proposed visual aid for patients with a restricted visual field (tunnel vision) combines a see-through head-mounted display and a simultaneous minified contour view of the wide-field image of the environment. Such a widening of the effective visual field is helpful for tasks, such as visual search, mobility, and orientation. The sufficiency of image contours for performing everyday visual tasks is of major importance for this application, as well as for other applications, and for basic understanding of human vision. This research aims is to examine and compare the use of different types of automatically created contours, and contour representations, for practical everyday visual operations using commonly observed images. The visual operations include visual searching for items, such as cutlery, housewares, etc. Considering different recognition levels, identification of an object is distinguished from mere detection (when the object is not necessarily identified). Some nonconventional visual-based contour representations were developed for this purpose. Experiments were performed with normal-vision subjects by superposing contours of the wide field of the scene over a narrow field (see-through) background. From the results, it appears that about 85% success is obtained for searched object identification when the best contour versions are employed. Pilot experiments with video simulations are reported at the end of the paper.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Saccadic and perceptual performance in visual search tasks. I. Contrast detection and discrimination

Brent R. Beutter, Miguel P. Eckstein, and Leland S. Stone
J. Opt. Soc. Am. A 20(7) 1341-1355 (2003)

Saccadic and perceptual performance in visual search tasks. II. Letter discrimination

Richard F. Murray, Brent R. Beutter, Miguel P. Eckstein, and Leland S. Stone
J. Opt. Soc. Am. A 20(7) 1356-1370 (2003)

Critical color differences determined with a visual search task

Allen L. Nagy and Robert R. Sanchez
J. Opt. Soc. Am. A 7(7) 1209-1217 (1990)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved