To reduce computational complexity required for processing, such as object recognition in an image, and improve the accuracy of detecting whether a driver is holding a steering wheel or not.SOLUTION: A in-vehicle camera captures an image including hands of a driver and a steering wheel. A predetermined easy-to-process steering wheel model is prepared, to transform the captured image into a coordinate system of the steering wheel model (S52), using a transformation matrix prepared in advance. A determination processing unit identifies whether the position of the steering wheel in the captured image overlaps the steering wheel model in the coordinate system of the steering wheel model (S53). A rotation angle θ on the steering wheel model corresponding to the change in position of the hands and the steering wheel in the captured image, is compared with the change in steering angle Φ acquired by a steering angle acquisition unit (S55). When the hands are on a circumference of the steering wheel model and when the rotation angle θ matches the change in steering angle Φ, holding of the steering wheel is detected.SELECTED DRAWING: Figure 10

    【課題】画像中の物体認識などの処理に必要な計算量を削減すると共に、運転者によるハンドル保持の有無を検出する精度を上げること。【解決手段】運転者の手と操舵用ハンドルの両方を含む像を車載カメラで撮影する。処理が容易な事前に定めたハンドルモデルを用意しておき、撮影した画像を事前に用意した変換行列を用いて、S52でハンドルモデルの座標系に変換する。判定処理部は、撮影した画像におけるハンドルの位置が、ハンドルモデルの座標系において前記ハンドルモデルと重なるか否かをS53で識別する。更に、撮影した画像における手とハンドルの位置変化に対応するハンドルモデル上の回転角度θと、舵角取得部が取得した舵角Φの変化とをS55で比較する。手がハンドルモデルの円周上にあり、かつ回転角度θと舵角Φの変化が一致した場合にハンドル保持を検知する。【選択図】図10


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    Title :

    APPARATUS FOR DETECTING HOLD OF STEERING WHEEL FOR VEHICLE


    Additional title:

    車両用ハンドル保持検出装置


    Contributors:

    Publication date :

    2023-11-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL



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