基于计算机视觉的架空线近距离预警系统  

A Close-Distance Warning System of Overhead Lines Based on Computer Vision

作　　者：魏赛[1] 刘政怡[1] 郭星[1] 吴建国[1] 

机构地区：[1]安徽大学计算机科学与技术学院,合肥230601

出　　处：《华东理工大学学报（自然科学版）》2013年第4期482-487,共6页Journal of East China University of Science and Technology

基　　金：安徽省自然科学基金青年基金项目(11040606Q07);高校省级重点自然科学研究项目(kj2010A023);安徽大学青年科学研究基金(2009QN0019B);安徽大学青年骨干教师培养对象经费资助;安徽大学研究生学术创新研究项目

摘　　要：在户外工作环境中,由于机械设备臂展较长以及操作过程中受设备操作人员的注意力、判断力、视线范围的限制,极易发生作业设备与架空线相碰而引发的电力事故,因此设计并实现了一种架空线近距离预警系统。该系统由两个摄像头负责采集实时环境图像,根据透视投影模型,由矫正过后图像中的点与标定板上点的映射关系以及两个摄像头的坐标位置,计算出目标物的物理坐标,再求得目标物和架空线之间距离,若小于安全距离则报警。仿真实验结果表明:预警系统具有良好的实时性和准确性,能够满足一定范围内的预警需求。In the outdoor environment, mechanical equipments often inevitably touch and destroy overhead lines due to long mechanical arm or negligence, error judgment and sight restriction of operators. To avoid these damage accidents, a close-distance warning system is proposed in this paper. Two cameras installed on a voltage pole are responsible for real-time collecting images of environment. By means of distortion correction and foreground object detection, the two-dimension coordinates of target object in the images are firstly computed. And then, by utilizing the mapping relation between two-dimension coordinate of target object in the image and three-dimensional coordinate of mapping point in the calibration panel in perspective projection model, both the three-dimensional coordinate of mapping point and the distance between two cameras are obtained. Besides, the cameras are connected with the corresponding mapping point for making up two space lines, while they are intersected in the target object. Finally, the distance between target object and overhead lines can be obtained. When the distance is less than safe distance, the warning is sent out. Simulation experiments show that the proposed system can attain better accuracy and higher real-time performance.

关 键 词：计算机视觉 架空线 预警系统 透视投影 标定板 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]