Real-time system for monitoring driver vigilance

Bergasa, Luis M.; Nuevo, Jesús; Sotelo, Miguel Ángel; Barea, Rafael; López, Elena
Year: 2006
Type of Publication: Article
Keywords: IR illuminator; blink frequency; driver vigilance monitoring; eye closure duration; face position; fixed gaze; fuzzy classification; image acquisition; motorway; nodding frequency; nonintrusive prototype computer vision; percent eye closure; real time system; computer
Journal: Intelligent Transportation Systems, IEEE Transactions on
Volume: 7
Number: 1
Pages: 63 -77
Month: march
ISSN: 1524-9050
DOI: 10.1109/TITS.2006.869598
This paper presents a nonintrusive prototype computer vision system for monitoring a driver's vigilance in real time. It is based on a hardware system for the real-time acquisition of a driver's images using an active IR illuminator and the software implementation for monitoring some visual behaviors that characterize a driver's level of vigilance. Six parameters are calculated: Percent eye closure (PERCLOS), eye closure duration, blink frequency, nodding frequency, face position, and fixed gaze. These parameters are combined using a fuzzy classifier to infer the level of inattentiveness of the driver. The use of multiple visual parameters and the fusion of these parameters yield a more robust and accurate inattention characterization than by using a single parameter. The system has been tested with different sequences recorded in night and day driving conditions in a motorway and with different users. Some experimental results and conclusions about the performance of the system are presented
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