PROBLEM TO BE SOLVED: To provide a driver state estimation device that can accurately estimate a position of a head of a driver in a real world from an image without being affected by differences in a seating position and a direction of a face of the driver.SOLUTION: A driver state estimation device comprises: a monocular camera 11 that picks up an image including a face of a driver sitting on a driver's seat; and a CPU 12. The CPU 12 includes: a head center position estimation part 23 that estimates a head center position x of the driver in the image picked up by the monocular camera 11 by using a three-dimensional face shape model fitted to the face of the driver in the image; and a distance estimation part 28 that estimates a distance B between an origin O provided in a front direction of the driver's seat and a head center position H of the driver in a real world, on the basis of information including the head center position x of the driver in the image estimated by the head center position estimation part 23 and specifications and a position and an attitude of the monocular camera 11.SELECTED DRAWING: Figure 2
【課題】運転者の着座位置や顔の向き等の違いによる影響を受けることなく、実世界における運転者の頭部の位置を画像から精度良く推定することができる運転者状態推定装置を提供すること。【解決手段】運転席に着座している運転者の顔を含む画像を撮像する単眼カメラ11と、CPU12とを備え、CPU12が、単眼カメラ11により撮像された画像中の運転者の顔にフィッティングさせた3次元顔形状モデルを用いて画像中の運転者の頭部中心位置xを推定する頭部中心位置推定部23と、頭部中心位置推定部23により推定された画像中の運転者の頭部中心位置xと単眼カメラ11の仕様及び位置姿勢とを含む情報に基づいて、運転席の正面方向に設けた原点Oと実世界における運転者の頭部中心位置Hとの距離Bを推定する距離推定部28とを装備する。【選択図】図2
DRIVER STATE ESTIMATION DEVICE AND DRIVER STATE ESTIMATION METHOD
運転者状態推定装置、及び運転者状態推定方法
27.09.2018
Patent
Elektronische Ressource
Japanisch
DRIVER STATE ESTIMATION DEVICE AND DRIVER STATE ESTIMATION METHOD
Europäisches Patentamt | 2018
|DRIVER STATE ESTIMATION DEVICE AND DRIVER STATE ESTIMATION METHOD
Europäisches Patentamt | 2021
|DRIVER STATE ESTIMATION DEVICE AND DRIVER STATE ESTIMATION METHOD
Europäisches Patentamt | 2018
|DRIVER STATE ESTIMATION DEVICE AND DRIVER STATE ESTIMATION METHOD
Europäisches Patentamt | 2020
|DRIVER STATE ESTIMATION DEVICE AND DRIVER STATE ESTIMATION METHOD
Europäisches Patentamt | 2019
|