To appropriately notify a driver of a vehicle of a drowsiness sign.SOLUTION: A drowsiness sign notification device detects a closed eye state of a driver from each of a plurality of face images that represent a face region of the driver of a vehicle and that are generated at different times from each other; determines whether or not a first closed eye ratio exceeds a first threshold value, the first closed eye ratio indicating a ratio of the number of face images in which a closed eye state is detected to the number of a plurality of face images that are generated in a first period; after it is determined that the first closed eye ratio does not exceed the first threshold value, determines whether or not a second closed eye ratio exceeds a second threshold value equal to or less than the first threshold value, the second closed eye ratio indicating the ratio of the number of face images in which a closed eye state is detected to the number of a plurality of face images that are generated in a second period longer than the first period; and notifies the driver that a drowsiness sign has been detected via a notification device provided in the vehicle if it is determined that the first closed eye ratio exceeds the first threshold value or the second closed eye ratio exceeds the second threshold value.SELECTED DRAWING: Figure 5
【課題】車両の運転者に適切に眠気兆候を通知する。【解決手段】眠気兆候通知装置は、車両の運転者の顔領域を表し互いに異なる時刻に生成される複数の顔画像のそれぞれから運転者の閉眼状態を検出し、第1期間に生成された複数の顔画像の数に対する閉眼状態が検出された顔画像の数の割合を示す第1閉眼割合が第1閾値を超えるか否かを判定し、第1閉眼割合が第1閾値を超えないと判定された後に、第1期間よりも長い第2期間に生成された複数の顔画像の数に対する閉眼状態が検出された顔画像の数の割合を示す第2閉眼割合が第1閾値以下である第2閾値を超えるか否かを判定し、第1閉眼割合が第1閾値を超える、または、第2閉眼割合が第2閾値を超えると判定された場合、車両に設けられた通知機器を介して眠気兆候が検出されたことを運転者に通知する。【選択図】図5
DROWSINESS SIGN NOTIFICATION DEVICE, DROWSINESS SIGN NOTIFICATION METHOD, AND DROWSINESS SIGN NOTIFICATION COMPUTER PROGRAM
眠気兆候通知装置、眠気兆候通知方法、および眠気兆候通知用コンピュータプログラム
30.01.2025
Patent
Elektronische Ressource
Japanisch
IPC: | 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 / A61B DIAGNOSIS , Diagnostik / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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