PROBLEM TO BE SOLVED: To provide a driver monitoring method and a driver monitoring apparatus, which are capable of detecting the face orientation angle of a driver with high accuracy even when the imaging direction of a camera is tilted with respect to the back-and-forth direction of a moving body.SOLUTION: A reference point q1 is set in a screen to be imaged by a camera 21 installed in such a manner that a driver of a vehicle can be imaged. When the driver is facing forward in the traveling direction of the vehicle, a positional deviation amount δX between the reference point q1 in the scree imaged by the camera 21 and a current feature point q2 that is the position of a feature point set for the driver in the screen is obtained. Then, based on the positional deviation amount δX, an installation angle φ, which is an angle between the imaging direction of the camera 21 and the back-and-forth direction of the vehicle, is corrected. More specifically, a deviation angle δθ is calculated based on the positional deviation amount δX, the deviation angle δθ is added to the installation angle φ, and an offset angle θoffset is obtained.SELECTED DRAWING: Figure 5
【課題】カメラの撮像方向が移動体の前後方向に対して傾いている場合でも、ドライバの顔向き角度を高精度に検出することが可能なドライバモニタ方法、及びドライバモニタ装置を提供する。【解決手段】車両のドライバを撮像可能に設置したカメラ21で撮像される画面内に基準点q1を設定する。ドライバが車両の進行方向前方を向いているときに、カメラ21で撮像される画面内の、基準点q1と、ドライバに設定した特徴点の画面内の位置である現特徴点q2と、の位置ずれ量δXを求める。そして、この位置ずれ量δXに基づいて、カメラ21の撮像方向と、車両の前後方向とのなす角度である設置角度φを補正する。即ち、位置ずれ量δXに基づいてずれ角度δθを演算し、設置角度φにずれ角度δθを加算して、オフセット角度θoffsetを求める。【選択図】図5
DRIVER MONITORING METHOD AND DRIVER MONITORING APPARATUS
ドライバモニタ方法及びドライバモニタ装置
18.10.2018
Patent
Elektronische Ressource
Japanisch
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