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    • 1. 发明授权
    • Doze detection method and apparatus thereof
    • 打盹检测方法及其装置
    • US09286515B2
    • 2016-03-15
    • US14342720
    • 2012-09-04
    • Kiyomi NakamuraHironobu Takano
    • Kiyomi NakamuraHironobu Takano
    • G06K9/00G08B21/06A61B5/18A61B5/11B60K28/06A61B5/00
    • G06K9/00604A61B5/0077A61B5/1103A61B5/18A61B5/4809A61B5/7282B60K28/066G08B21/06
    • A doze detection method, which accurately detects a blink burst and improves speed and accuracy of doze detection, includes measuring a state where the eye is substantially open as an open eye time and another state as a closed eye time, defining a time shorter than an average blink interval of a healthy adult in an alert state as a first threshold time; defining a time longer than an average closed eye time of a healthy adult in an alert state as a second threshold time; and defining blinks as a blink burst when detecting an eye opening equal to or shorter than the first threshold time. A doze state is determined when the closed eye time of a blink among the blinks during the blink burst reaches at least the second threshold time, the blink occurring after an open eye time equal to at most the first threshold time.
    • 准确地检测眨眼脉冲并提高打盹检测的速度和准确度的瞌睡检测方法包括测量眼睛基本上作为睁眼时间的状态和作为闭眼时间的另一状态的时间,该时间短于 处于警戒状态的健康成年人的平均眨眼间隔作为第一阈值时间; 将处于警戒状态的健康成年人的平均闭眼时间定义为比第二阈值时间长的时间; 以及当检测到等于或小于所述第一阈值时间的眼睛开口时,将闪烁定义为闪烁突发。 当在闪烁突发期间闪烁之间的闪烁的闭合眼睛时间达到至少第二阈值时间时,确定打盹状态,在睁眼时间等于至多第一阈值时间之后发生闪烁。
    • 2. 发明申请
    • DOZE DETECTION METHOD AND APPARATUS THEREOF
    • DOZE检测方法及其装置
    • US20140205149A1
    • 2014-07-24
    • US14342720
    • 2012-09-04
    • Kiyomi NakamuraHironobu Takano
    • Kiyomi NakamuraHironobu Takano
    • G06K9/00
    • G06K9/00604A61B5/0077A61B5/1103A61B5/18A61B5/4809A61B5/7282B60K28/066G08B21/06
    • A doze detection method, which accurately detects a blink burst and improves speed and accuracy of doze detection, includes measuring a state where the eye is substantially open as an open eye time and another state as a closed eye time, defining a time shorter than an average blink interval of a healthy adult in an alert state as a first threshold time; defining a time longer than an average closed eye time of a healthy adult in an alert state as a second threshold time; and defining blinks as a blink burst when detecting an eye opening equal to or shorter than the first threshold time. A doze state is determined when the closed eye time of a blink among the blinks during the blink burst reaches at least the second threshold time, the blink occurring after an open eye time equal to at most the first threshold time.
    • 准确地检测眨眼脉冲并提高打盹检测的速度和准确度的瞌睡检测方法包括测量眼睛基本上作为睁眼时间的状态和作为闭眼时间的另一状态的时间,该时间短于 处于警戒状态的健康成年人的平均眨眼间隔为第一阈值时间; 将处于警戒状态的健康成年人的平均闭眼时间定义为比第二阈值时间长的时间; 以及当检测到等于或小于所述第一阈值时间的眼睛开口时,将闪烁定义为闪烁突发。 当在闪烁突发期间闪烁之间的闪烁的闭合眼睛时间达到至少第二阈值时间时,确定打盹状态,在睁眼时间等于至多第一阈值时间之后发生闪烁。