Visual search controlled by spatial frequency without salient features in an image1. (14th October 2015)

• Record Type: Journal Article
• Authors: Kato, Kazuo; Tashiro, Kazuki; Kuroki, Tomohiro; Ishikawa, Atsuo
• Is Part Of: IEEJ transactions on electrical and electronic engineering. Volume 10:(2015)Supplement 1
• Page Start: S91
• Page End: S95
• Publication Date: 2015-10-14
• Subjects: visual search -- spatial frequency -- eye movement -- 1/fβ -- scan path; Electrical engineering -- Periodicals; Electronics -- Periodicals; 621.3
• DOI: 10.1002/tee.22169
• Languages: English
• ISSNs: 1931-4973

Abstract

Abstract : To clarify the characteristics of visual search that are controlled by spatial frequency, we measured the scan path during eye movement in response to visual stimuli. A target stimulus with the spatial frequency of 1/ f β (where β is the slope of power spectral density of luminance in an image) was embedded in a background stimulus with white (1/ f 0 ) characteristics. An instruction‐based task was employed in this study, wherein a subject searches for the target as rapidly as possible and fixates on it. Participants were six healthy males aged 21–22 years. In the task, a threshold for spatial frequency that was the minimum value required by the subjects for the search corresponded to β =∼ 0.2 − 0.3. This finding has potential application in the design of visual presentation media, such as signs and tablets, by providing ease of viewing to the user. © 2015 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.