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    • 3. 发明授权
    • Drowsiness assessment device and program
    • 嗜睡评估装置和程序
    • US08306271B2
    • 2012-11-06
    • US13257182
    • 2010-03-17
    • Takumi YodaTakuhiro OmiAkira KadoyaIsahiko Tanaka
    • Takumi YodaTakuhiro OmiAkira KadoyaIsahiko Tanaka
    • G06K9/00
    • A61B5/18A61B5/1103A61B5/1128A61B5/6821A61B2503/22B60K28/06G08B21/06
    • Local maxima values and local minima values are derived from eyelid openness time series data in a segment in which a continuous closed eye period of extracted blinks is a specific time duration (for example 1 second) or longer. When plural local minima values are present in the segment of continuous closed eye period of 1 second or longer, blinks are extracted passing over and back through each variable closed eye threshold value of a variable closed eye threshold that is slid in a direction from the derived local maxima value towards the local minima value in set steps to a low value, and a inter-blink interval derived. Determination is made that a blink burst has occurred when the derived inter-blink interval is 1 second or less, and say greater than 0.2 seconds, thereby detecting a blink burst. Blink bursts can be detected with good precision, and the state of drowsiness can be assessed with good precision.
    • 局部最大值和局部最小值是从其中提取的闪烁的连续闭合眼睛周期是特定持续时间(例如1秒)或更长时间段的眼睑开放时间序列数据导出的。 当连续闭眼期为1秒以上的区域存在多个局部最小值时,通过从导出的方向滑动的可变闭眼阈值的每个可变闭眼阈值提取眨眼, 局部最大值对设定步骤中的局部最小值至低值,以及衍生的眨眼间隔。 确定当导出的眨眼间隔为1秒以下,并且说大于0.2秒时发生了闪烁突发,从而检测到闪烁。 可以精确地检测到眨眼,可以精确地评估瞌睡状态。
    • 4. 发明申请
    • DROWSINESS ASSESSMENT DEVICE AND PROGRAM
    • 防尘评估设备和程序
    • US20120002843A1
    • 2012-01-05
    • US13257182
    • 2010-03-17
    • Takumi YodaTakuhiro OmiAkira KadoyaIsahiko Tanaka
    • Takumi YodaTakuhiro OmiAkira KadoyaIsahiko Tanaka
    • G06K9/00
    • A61B5/18A61B5/1103A61B5/1128A61B5/6821A61B2503/22B60K28/06G08B21/06
    • Local maxima values and local minima values are derived from eyelid openness time series data in a segment in which a continuous closed eye period of extracted blinks is a specific time duration (for example 1 second) or longer. When plural local minima values are present in the segment of continuous closed eye period of 1 second or longer, blinks are extracted passing over and back through each variable closed eye threshold value of a variable closed eye threshold that is slid in a direction from the derived local maxima value towards the local minima value in set steps to a low value, and a inter-blink interval derived. Determination is made that a blink burst has occurred when the derived inter-blink interval is 1 second or less, and say greater than 0.2 seconds, thereby detecting a blink burst. Blink bursts can be detected with good precision, and the state of drowsiness can be assessed with good precision.
    • 局部最大值和局部最小值是从其中提取的闪烁的连续闭合眼睛周期是特定持续时间(例如1秒)或更长时间段的眼睑开放时间序列数据导出的。 当连续闭眼期为1秒以上的区域存在多个局部最小值时,通过从导出的方向滑动的可变闭眼阈值的每个可变闭眼阈值提取眨眼, 局部最大值对设定步骤中的局部最小值至低值,以及衍生的眨眼间隔。 确定当导出的眨眼间隔为1秒以下,并且说大于0.2秒时发生了闪烁突发,从而检测到闪烁。 可以精确地检测到眨眼,可以精确地评估瞌睡状态。
    • 10. 发明授权
    • Image processing apparatus and image processing method
    • 图像处理装置和图像处理方法
    • US08199190B2
    • 2012-06-12
    • US12451246
    • 2008-05-09
    • Isahiko TanakaShin-ichi KojimaTakashi Naito
    • Isahiko TanakaShin-ichi KojimaTakashi Naito
    • H04N9/47H04N5/222
    • G06K9/00845G06F9/4831G06F9/4887G06K9/00993
    • An image processing apparatus is configured so that a combination of the processes that are performed is set for each of unit cycles (according to the value of a counter) in accordance with priorities individually set for the processes, and image processing is performed in a fundamental cycle that is constituted of six unit cycles. A face direction determination process, a line-of-sight direction determination process, a blink detection process, a dozing determination process, and a consciousness deterioration level determination process are selectively performed depending on the value of the counter, which varies from 1 to 6. According to the image processing apparatus, it is possible to more efficiently perform image processing that involves a plurality of processes.
    • 图像处理装置被配置为使得根据针对处理单独设置的优先级,针对每个单位周期(根据计数器的值)设置所执行的处理的组合,并且以基本形式执行图像处理 循环由六个单位循环组成。 根据从1到6变化的计数器的值来选择执行面部方向确定处理,视线方向确定处理,眨眼检测处理,打盹确定处理和意识恶化水平确定处理 根据图像处理装置,可以更有效地进行涉及多个处理的图像处理。