Abstract

This experiment demonstrated the degradation in search performance resulting from a decrease in the frame rate of a static, structured display containing visual noise. The display was produced by projecting moving pictures of the static, structured scene. Television-type visual noise in the scene was obtained by double exposure and special printing of the film. After a 10-sec search, the probability of detecting the target was 0.94 in the noise-free display, 0.85 in the noisy display simulating 26 frames/sec, and 0.78 in the noisy display simulating 5.2 frames/sec. These results indicate that restricted usefulness of a low-frame-rate, television-type display may be expected in a low signal-to-noise ratio condition.

Neither peripheral acuity, foveal acuity, nor eye-dominance scores correlated significantly with search time. There was a significant correlation between response time and search time, which can be attributed to the mental processing and decision time common to both tasks.

© 1966 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Visual Search Performance in a Moving Structured Field

Ronald A. Erickson
J. Opt. Soc. Am. 54(3) 399-405 (1964)

Effects of Involuntary Eye Movements on Visual Acuity*

Ulker Tulunay Keesey
J. Opt. Soc. Am. 50(8) 769-774 (1960)

Age and visual search: expanding the useful field of view

Karlene K. Ball, Bettina L. Beard, Daniel L. Roenker, Richard L. Miller, and David S. Griggs
J. Opt. Soc. Am. A 5(12) 2210-2219 (1988)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

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 OSA member, or as an authorized user of your institution.

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

Figures (4)

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

Contact your librarian or system administrator
or
Login to access OSA 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 OSA member, or as an authorized user of your institution.

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