公开(公告)号：US08935082B2

公开(公告)日：2015-01-13

申请号：US13357034

申请日：2012-01-24

申请人： Edul N Dalal ,  Wencheng Wu

发明人： Edul N Dalal ,  Wencheng Wu

IPC分类号： G06F19/00 ,  G08G1/01 ,  G06K9/20

CPC分类号： G08G1/0116 ,  G06K9/2018 ,  G08G1/052 ,  G08G1/054

摘要： A system and method which detects and uses a point of contact between a vehicle's tire and the pavement as a reference point to improve the accuracy of vehicle speed detection in a motorized vehicle speed detection system. In one embodiment, a plurality of infrared images of a moving vehicle are received. Each of the images is separated in time by known intervals. The images are captured using an infrared camera which can be a single-band or multi-band camera which operates in an infrared wavelength band selected to enhance a contrast between the vehicle's tires and the road surface. For each image, a point of contact is determined where a same tire contacts the road surface. These points and the time interval separations are used to calculate the vehicle's speed. An alert signal is initiated to a traffic enforcement authority if the speed exceeds the road's speed limit.

摘要翻译： 检测并使用车辆的轮胎与路面之间的接触点作为基准点的系统和方法，以提高机动车辆速度检测系统中的车辆速度检测的精度。 在一个实施例中，接收移动车辆的多个红外图像。 每个图像以已知的间隔在时间上分离。 使用红外线摄像机捕获图像，该红外摄像机可以是选择的红外波长带中操作的单频带或多频带相机，以增强车辆轮胎和路面之间的对比度。 对于每个图像，确定相同轮胎接触路面的接触点。 这些点和时间间隔分离用于计算车辆的速度。 如果速度超过道路的速度限制，则向交通执法机关发出警报信号。