Minimizing eyestrain on a liquid crystal display considering gaze direction and visual field of view

Won Oh Lee, Hwan Heo, Eui Chul Lee, Kang Ryoung Park

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

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.

Original languageEnglish
Article number073104
JournalOptical Engineering
Volume52
Issue number7
DOIs
StatePublished - 2013

Keywords

  • eye foveation model
  • eyestrain
  • visual field of view

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