To provide a driver state determination method and a driver state determination system which can secure accuracy in state determination regardless of a learning period of time for a visual line of a driver.SOLUTION: A driver state determination system S that determines a state of a driver in a vehicle comprises: a learning information generating part 26a that generates a second correction coefficient β having a physical state of the vehicle, characteristics of the driver and visual line behavior of the driver associated with one another; a learning visual line distribution generating part 26 that generates a second corrected visual line distribution Y using a reference visual line distribution A and the second correction coefficient β; a learning progress-degree calculating part 27a that calculates a learning progress degree St on the basis of the number C2 of images used in generating the second corrected visual line distribution Y; and an abnormality estimating part 27 that determines that the driver is abnormal when the difference between the visual line behavior distribution B and the second corrected visual line distribution Y is equal to or more than a determination threshold, and increases a weighing ratio of elicited characteristics with respect to latent characteristics as the learning progress-degree St becomes larger.SELECTED DRAWING: Figure 1
【課題】運転者の視線学習期間に拘らず状態判定精度を確保することができる運転者状態判定方法及びその判定システムを提供する。【解決手段】車両の運転者の状態を判定する運転者状態判定システムSは、車両の物理状態と、運転者の特性と、運転者の視線挙動とを関連付けた第2補正係数βを生成する学習情報生成部26aと、基準視線分布Aと第2補正係数βを用いて第2補正視線分布Yを生成する学習視線分布生成部26と、第2補正視線分布Yの生成に用いた画像数C2に基づき学習進捗度Stを演算する学習進捗度演算部27aと、視線挙動分布Bと第2補正視線分布Yとの差異が判定閾値以上のとき、運転者の異常を判定すると共に、学習進捗度Stが大きい程潜在特性に対する顕在特性の重み付け割合を増加する異常推定部27とを有する。【選択図】 図1
DRIVER STATE DETERMINATION METHOD AND DRIVER STATE DETERMINATION SYSTEM
運転者状態判定方法及びその判定システム
2023-02-15
Patent
Electronic Resource
Japanese
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 / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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