计算机工程与应用 ›› 2010, Vol. 46 ›› Issue (14): 62-65.DOI: 10.3778/j.issn.1002-8331.2010.14.018

• 研发、设计、测试 • 上一篇    下一篇

一种基于线扫描相机的新型交通检测器

徐志刚1,赵祥模1,李 娜2   

  1. 1.长安大学 信息工程学院,西安 710064
    2.西安邮电学院 通信工程系,西安 710121
  • 收稿日期:2009-04-27 修回日期:2009-06-04 出版日期:2010-05-11 发布日期:2010-05-11
  • 通讯作者: 徐志刚

Novel vehicle detection system based on line scan camera

XU Zhi-gang1,ZHAO Xiang-mo1,LI Na2   

  1. 1.School of Information Engineering,Chang’an University,Xi’an 710064,China
    2.Department of Communication Engineering,Xi’an University of Post & Telecommunications,Xi’an 710121,China
  • Received:2009-04-27 Revised:2009-06-04 Online:2010-05-11 Published:2010-05-11
  • Contact: XU Zhi-gang

摘要: 针对基于视频的交通检测器的检测精度和实时性难以提高的问题,提出了一种基于线扫描相机的新型交通检测器。该检测器通过两个相距2米的线扫描相机捕获移动车辆的俯视图像,采用小波变换算法进行图像背景更新和目标提取,运用目标投影曲线相关匹配的方法进行车辆速度估计,最终检测出经过检测断面所有车辆的个数和速度。实验结果表明,基于线扫描相机的交通检测器在车辆计数和车速估计方面的性能上均要优于传统的基于视频的交通检测器。

关键词: 智能交通系统, 交通检测器, 线阵扫描照相机, 图像处理, 小波变换

Abstract: In order to improve the precision and real-time character of the traditional video-based traffic detector,a novel vehicle detector based on line scan camera is developed.In this system,the vertical view images of vehicles are captured by two line scan cameras which are mounted on the pole’s arm over the roadway.The distance between two cameras is 2 meters along the road.The vehicle’s outline region in the captured image is extracted with a wavelet transform algorithm,and the vehicle’s speed is estimated by a curve correlation method.The testing result proves that the performance of vehicle detector based on line scan camera on vehicle counting and speed estimation is better than the vehicle detector based on video camera.

Key words: intelligent transportation system, vehicle detector, line scan camera, image processing, wavelet transform

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