一种单幅运动模糊图像的车速测量算法  

A vehicle speed measurement algorithm based on single motion-blurred image

作　　者：陈佳[1] 库鹏森 玉振明[1] CHEN Jia;KU Pengsen;YU Zhenming(Guangxi Colleges and Universities Key Laboratory of Image Processing Information and Intelligent System,Wuzhou University,Wuzhou 543002,China;College of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]梧州学院广西高校图像处理与智能信息系统重点实验室,广西梧州543002 [2]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《中国测试》2018年第3期120-123,共4页China Measurement & Test

基　　金：国家自然科学基金项目(61562074);广西自然科学基金项目(2015GXNSFAA139295);广西高校科学技术研究项目(KY2015LX446);梧州学院中青年骨干教师培养计划基金资助(梧院发[2015]51号);梧州学院校级科研项目(2011C002)

摘　　要：针对道路中行驶车辆速度测量的问题,利用运动车辆所产生的单幅运动模糊图像可获取车辆在曝光时间内的运动信息,从中提取其运动参数,进而实现行驶车辆的速度测量。在分析运动模糊成像机理和车速测量模型的基础上,构建道路交通场景实验环境,用CCD相机以多种快门速度对车速在25~130 km/h之间的行驶车辆进行多次抓拍;通过定位单幅模糊图像中车辆轮毂的边界,并计算轮毂运动方向和非运动方向上的直径差来估算车辆的运动参数,完成车速测量实验。实验数据表明:不同曝光时间和不同车速情况下,车速测量的误差绝对值都在8%以内。结果表明该算法对成像环境要求不高,且适用于不同车型。With regard to speed measurement of running vehicles on road,a single motion-blurred image of moving vehicle is used to obtain the moving information of the vehicle the during exposure time so as to extract its motion parameters and finally work out the speed vehicle of.After analyzing the motion blur imaging mechanism and vehicle speed model measurement,a test environment of traffic scene on the road is set up.And then,a CCD camera used is to capture the images of moving vehicles running at a speed of 2 5-1 3 0 km/h at different several shutter speeds.After that,by positioning the border of the vehicle’s wheel hub in blurred the image and calculating the diameter difference of the wheel hub in the moving and direction the non-moving direction,the motion parameters of the vehicle are calculated to finish vehicle the vehicle the speed measurement.Experimental data shows that the absolute value of error of speed that speed'showing the algorithm doesn’t have high requirements on imaging environment and it is suitable different for kinds of vehicles.

关 键 词：道路交通 车辆速度测量 单幅运动模糊图像 运动参数 车辆轮毂 直径差 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]