To determine that a vehicle is going to enter a dark place before entering the dark place.SOLUTION: A dark place determination device includes an acquisition unit that acquires a composite image obtained by combining a first captured image obtained by capturing a forward area of a vehicle at a first sensitivity and a second captured image obtained by capturing the forward area of the vehicle at a second sensitivity lower than the first sensitivity, a dark place progress degree calculation unit that calculates, as a dark place progress degree, a time change in a ratio of a first number of first pixels of the first captured image included in a predetermined determination area of the composite image or a second number of second pixels of the second captured image included in the determination area to a number of determination pixels included in the determination area, and a determination unit that determines that the vehicle is going to enter a dark place when the dark place progress degree is equal to or greater than a predetermined threshold value.SELECTED DRAWING: Figure 3

    【課題】暗所に進入する前に、暗所に進入予定であることを判定することができる。【解決手段】暗所判定装置は、第1感度で車両の前方を撮影した第1撮影画像と、前記第1感度よりも低い第2感度で前記車両の前方を撮影した第2撮影画像と、を合成した合成画像を取得する取得部と、前記合成画像の予め定めた判定領域に含まれる判定画素の画素数に対する、前記判定領域に含まれる前記第1撮影画像の第1画素の第1画素数又は前記判定領域に含まれる前記第2撮影画像の第2画素の第2画素数の割合の時間変化量を、暗所進行度として算出する暗所進行度算出部と、前記暗所進行度が予め定めた閾値以上である場合に、暗所に進入予定であると判定する判定部と、を備える。【選択図】図3


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    Title :

    DARK PLACE DETERMINATION DEVICE, DARK PLACE DETERMINATION METHOD, AND DARK PLACE DETERMINATION PROGRAM


    Additional title:

    暗所判定装置、暗所判定方法、及び暗所判定プログラム


    Contributors:
    SATO KENTA (author) / IMATO YUKI (author)

    Publication date :

    2024-09-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS