To determine a state of a driver including at least one state of drowsiness, fatigue and stress, based on a detection result even when a visual line of the driver while driving a vehicle is detected by a camera with low performance.SOLUTION: In a driver state determination device 10, an imaging data acquisition unit 11 acquires imaging data including an image of eyes of the driver captured by a camera 20; a visual line motion detection unit 12 detects a direction of a visual line of the driver to detect a movement distance of the visual line of the driver per prescribed period, based on a change in the direction of the visual line of the driver over time; a driver state determination unit 13 extracts a duration of a time zone in which the movement distance of the visual line of the driver is relatively small as a visual line retention interval, identifies a tendency of temporal change in the visual line retention interval (tendency of fluctuation of the visual line retention interval), and determines the state of the driver based on the identified tendency.SELECTED DRAWING: Figure 5
【課題】例えば車両運転中のドライバの視線を低性能のカメラで検出した場合であっても、その検出結果に基づいて、眠気、疲労度及び緊張度の少なくとも1つの状態を含むドライバの状態を判定する。【解決手段】ドライバ状態判定装置10において、撮像データ取得部11は、ドライバの眼をカメラ20で撮像した画像を含む撮像データを取得する。視線運動検出部12は、ドライバの視線の方向を検出して、ドライバの視線の方向の経時的変化から、所定時間当たりのドライバの視線の移動距離を検出する。ドライバ状態判定部13は、ドライバの視線の移動距離が相対的に小さい時間帯の時間長を視線滞留間隔として抽出し、視線滞留間隔の経時的変化の傾向(視線滞留間隔のゆらぎの傾向)を特定して、特定された傾向からドライバの状態を判定する。【選択図】図5
DRIVER STATE ESTIMATION DEVICE AND DRIVER STATE ESTIMATION METHOD
ドライバ状態推定装置及びドライバ状態推定方法
2019-10-10
Patent
Elektronische Ressource
Japanisch
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