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Journal of Biomedical Optics • Open Access

Glasses-free randot stereotest
Author(s): Jonghyun Kim; Jong-Young Hong; Keehoon Hong; Hee Kyung Yang; Sang Beom Han; Jeong-Min Hwang; Byoungho Lee

Paper Abstract

We proposed a glasses-free randot stereotest using a multiview display system. We designed a four-view parallax barrier system and proposed the use of a random-dot multigram as a set of view images for the glasses-free randot stereotest. The glasses-free randot stereotest can be used to verify the effect of glasses in a stereopsis experience. Furthermore, the proposed system is convertible between two-view and four-view structures so that the motion parallax effect could be verified within the system. We discussed the design principles and the method used to generate images in detail and implemented a glasses-free randot stereotest system with a liquid crystal display panel and a customized parallax barrier. We also developed graphical user interfaces and a method for their calibration for practical usage. We performed experiments with five adult subjects with normal vision. The experimental results show that the proposed system provides a stereopsis experience to the subjects and is consistent with the glasses-type randot stereotest and the Frisby–Davis test. The implemented system is free from monocular cues and provides binocular disparity only. The crosstalk of the system is about 6.42% for four-view and 4.17% for two-view, the time required for one measurement is less than 20 s, and the minimum angular disparity that the system can provide is about 23 arc sec.

Paper Details

Date Published: 9 June 2015
PDF: 9 pages
J. Biomed. Opt. 20(6) 065004 doi: 10.1117/1.JBO.20.6.065004
Published in: Journal of Biomedical Optics Volume 20, Issue 6
Show Author Affiliations
Jonghyun Kim, Seoul National Univ. (Korea, Republic of)
Jong-Young Hong, Seoul National Univ. (Korea, Republic of)
Keehoon Hong, Electronics and Telecommunications Research Institute (Republic of Korea)
Hee Kyung Yang, Seoul National Univ. Bundang Hospital (Korea, Republic of)
Sang Beom Han, Kangwon National Univ. Hospital (Korea, Republic of)
Jeong-Min Hwang, Seoul National Univ. Bundang Hospital (Korea, Republic of)
Byoungho Lee, Seoul National Univ. (Korea, Republic of)

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