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    • 2. 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。
    • 5. 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。
    • 10. 发明授权
    • Method and apparatus for processing digital map data
    • 用于处理数字地图数据的方法和装置
    • US06470265B1
    • 2002-10-22
    • US09582028
    • 2000-06-21
    • Isahiko Tanaka
    • Isahiko Tanaka
    • G06F700
    • G01C21/32G01C11/00G09B29/00G09B29/106
    • In a digital map data processing device and a digital map data processing method which are useful to generate an accurate road map and particularly can be used for navigation and control of traveling vehicles according to the generated road map, a map image processing station 16 acquires image data of the ground surface through a satellite communication station 14, and an image processing section 20 converts the image data into orthoimage data which is viewed substantially from directly above and free from distortion. A data extraction section 22 extracts a skeleton map (road network data) formed of roads and related stereoscopic information according to the orthoimage data, a data conversion section 24 calculates base road data from the skeleton map, and a map generation section 28 overlays necessary attribute data to generate highly accurate digital orthomap data free from a distortion. The digital orthomap data is sent to a vehicle 18 through a transmission section 30 and used for navigation control and running control.
    • 在用于生成精确路线图的数字地图数据处理装置和数字地图数据处理方法中,特别地可以根据生成的路线图用于行驶车辆的导航和控制,地图图像处理站16获取图像 通过卫星通信站14的地面的数据,以及图像处理部分20将图像数据转换成基本上从上方观察并且没有失真的正射影像数据。 数据提取部22根据正射图像数据提取由道路形成的骨架图(道路网络数据)和相关的立体信息,数据变换部24从骨骼地图计算基础道路数据,地图生成部28将必要属性 数据生成高度精确的数字垂直地图数据,无畸变。 数字垂直地图数据通过传输部分30发送到车辆18,并用于导航控制和行驶控制。