Robust Blink Detection Method For Low Frame Rates
Robust Blink Detection Method For Low Frame Rates
カテゴリ: 論文誌(論文単位)
グループ名: 【D】産業応用部門(英文)
発行日: 2014/09/01
タイトル(英語): Robust Blink Detection Method For Low Frame Rates
著者名: Takeshi Toda (Nihon University), Kouhei Tsuruoka (Nihon University), Tatsuhiko Miyakawa (Nihon University), Xinxin Liu (National Institute of Occupational Saftey and Health)
著者名(英語): Takeshi Toda (Nihon University), Kouhei Tsuruoka (Nihon University), Tatsuhiko Miyakawa (Nihon University), Xinxin Liu (National Institute of Occupational Saftey and Health)
キーワード: visual display terminal (VDT),eye dryness,blink detection,template matching,built-in camera,frame rate
要約(英語): In recent times, personal mobile devices have become an integral part of daily life. However, since these devices typically demand prolonged durations of focus, they adversely affect a user's blinking rate. Blinking is an essential function of the eye that spreads tears, and thereby, helps avoid eye dryness and soreness. Several blink detection methods have been proposed, however, these methods are unable to effectively monitor involuntary blinks when the camera frame rate is low. To address this issue, this paper proposes a blink detection method for a real-time vision system implemented on the devices that dynamically change the frame rate of the built-in camera according to the usage environment. In the proposed method, the location of eyes is determined and an open-eye template is created by image differencing the initial blinks of the user. Subsequently, the eye is tracked by template matching using the open-eye template in each frame. During eye tracking, the correlation score is analyzed and thresholded with a criterion in order to detect closed eyelids at each frame. Several-frames-of-moving-averaged value of highest correlation score at each frame is used as the threshold value with an offset. In the experimental evaluation, the proposed blink detection method was implemented on a laptop-PC. A total of more than 10,000 true blinks from twenty-three test subjects yielded detection accuracies of 92.2 and 90.1% at 30 and 6 fps frame rate, respectively.
本誌: IEEJ Journal of Industry Applications Vol.3 No.5 (2014)
本誌掲載ページ: 374-380 p
原稿種別: 論文/英語
電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/3/5/3_374/_article/-char/ja/
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