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Optical Engineering • Open Access

Minimizing eyestrain on a liquid crystal display considering gaze direction and visual field of view
Author(s): Won Oh Lee; Hwan Heo; Eui Chul Lee; Kang Ryoung Park

Paper Abstract

Recently, it has become necessary to evaluate the performance of display devices in terms of human factors. To meet this requirement, several studies have been conducted to measure the eyestrain of users watching display devices. However, these studies were limited in that they did not consider precise human visual information. Therefore, a new eyestrain measurement method is proposed that uses a liquid crystal display (LCD) to measure a user’s gaze direction and visual field of view. Our study is different in the following four ways. First, a user’s gaze position is estimated using an eyeglass-type eye-image capturing device. Second, we propose a new eye foveation model based on a wavelet transform, considering the gaze position and the gaze detection error of a user. Third, three video adjustment factors—variance of hue (VH), edge, and motion information—are extracted from the displayed images in which the eye foveation models are applied. Fourth, the relationship between eyestrain and three video adjustment factors is investigated. Experimental results show that the decrement of the VH value in a display induces a decrease in eyestrain. In addition, increased edge and motion components induce a reduction in eyestrain.

Paper Details

Date Published: 9 July 2013
PDF: 9 pages
Opt. Eng. 52(7) 073104 doi: 10.1117/1.OE.52.7.073104
Published in: Optical Engineering Volume 52, Issue 7
Show Author Affiliations
Won Oh Lee, Dongguk Univ. (Korea, Republic of)
Hwan Heo, Dongguk Univ. (Korea, Republic of)
Eui Chul Lee, Sangmyung Univ. (Korea, Republic of)
Kang Ryoung Park, Dongguk Univ. (Korea, Republic of)

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