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    • 44. 发明申请
    • PASSIVE SINGLE CAMERA IMAGING SYSTEM FOR DETERMINING MOTOR VEHICLE SPEED
    • 被动单摄像机成像系统确定机动车辆速度
    • WO2008060916A2
    • 2008-05-22
    • PCT/US2007/083895
    • 2007-11-07
    • UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.DIXON, Warren, E.GANS, Nicholas, R.GUPTA, Sumit
    • DIXON, Warren, E.GANS, Nicholas, R.GUPTA, Sumit
    • G01P3/38G01S11/12
    • G01S11/12G06T7/246G08G1/052G08G1/16
    • A system for passively determining a speed of moving vehicles includes a single imaging device (103) for acquiring a plurality of images at a first time and at least at one second later time, wherein each image includes a moving vehicle (406) on a vehicle pathway (402) and at least one fixed object (404) proximate to the vehicle, defining a first plane (7I1) intersecting an adjacent portion of the vehicle pathway (402), wherein no geometric lengths of the vehicle (406) are known a priori. The system can also include a processor (121) operable to receive data associated with the images and determine a speed of the vehicle (406) in the images, wherein the processor (121) estimates at least one geometric length of the vehicle (406) by applying homography using the plurality of images, and where the processor (121) determines a speed of the vehicle (406) from the plurality of images and the estimated geometric length using a velocity estimation method.
    • 用于被动地确定移动车辆的速度的系统包括用于在第一时间和至少一秒以后的时间获取多个图像的单个成像装置(103),其中每个图像包括 在车辆路径(402)和邻近车辆的至少一个固定物体(404)上移动车辆(406),限定与车辆路径(402)的相邻部分相交的第一平面(71I),其中没有几何长度的 车辆(406)是先验已知的。 该系统还可以包括可操作以接收与图像相关联的数据并且确定车辆(406)在图像中的速度的处理器(121),其中处理器(121)估计车辆(406)的至少一个几何长度, 通过使用多个图像应用单应性,并且其中处理器(121)使用速度估计方法从多个图像和估计的几何长度确定车辆(406)的速度。