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KMID : 1191420140130020040
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Korean Journal of Optometry and Vision Science
2014 Volume.13 No. 2 p.40 ~ p.45
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Analysis of Eye Blinking with High-Speed Camera
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Lee Woon-Hee
Seo Jong-Mo
Hwang Jeong-Min
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Abstract
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Purpose: A new method for analyzing eye blinking pattern using high-speed camera without a headrest and additional illuminations other than room light was proposed.
Methods: Video clips of the area around an eye with a rectangular-shaped marker (0.5 cm x 1.27 cm) attached under the eye were taken at 240 frames per second. Eye blinking sequences were extracted from the whole video clip and images were aligned by the marker. Shapes and positions of upper eyelid were detected and visualized in three-dimensional graph to be understood easily. Eye blinking cycle was divided into three phases such as ‘Closing phase’, ‘Closed phase’, and ‘Opening phase’ and characteristics of eye blinking were analyzed.
Results: By the proposed method, various experiments were performed with volunteers. Parameters of eye blinking were calculated by analyzing the intensity profile of binary images, and eye blinking patterns were analyzed according to the change of the eyelid position.
Conclusions: Eye blinking patterns are classified by blinking parameters and eyelid position graph. Further studies are needed to apply the proposed method.
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KEYWORD
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Blinking rate, Eye blinking, Eye blinking duration, Eyelid position
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