A driver state estimation device which can estimate a distance to a driver's head position without detecting a center position of the driver's face area in an image, includes a camera, a lighting part, and a CPU including a face detecting section for detecting the driver's face in a first image picked up at the time of light irradiation from the lighting part and in a second image picked up at the time of no light irradiation from the lighting part, a face brightness ratio calculating section for calculating a brightness ratio between the driver's face in the first image and that in the second image, and a distance estimating section for estimating a distance from the driver's head to the camera using the calculated face brightness ratio.
DRIVER STATE ESTIMATION DEVICE AND DRIVER STATE ESTIMATION METHOD
2020-01-02
Patent
Electronic Resource
English
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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / G06V |
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