Research on the measurement of belt speed by video in coal mine based on improved template matching algorithm  

作　　者：ZHU Ai-chun HUA Wei WANG Chun WANG Yong-xing 

机构地区：[1]School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221008, China [2]School of Computer and Communication Engineering, Tianjin University of Technology, Tianjin 300384, China

出　　处：《Journal of Coal Science & Engineering(China)》2011年第4期469-474,共6页煤炭学报（英文版）

摘　　要：In order to improve the intelligence of video monitoring system of belt and make up the deficiency of higher failure rate and bad real-time performance in the traditional systems of measurement of belt speed, according to the fact that the light of coal mine is uneven, the strength of light changes greatly, the direction of belt movement is constant, and the position of camera was fixed, various algorithms of speed measurement by video were studied, and algorithm for template matching based on sum of absolute differences （SAD） and correlation coefficient was proposed and improved, besides, the tracking of feature regions was realized. Then, a camera calibration method using the invariance of the cross-ratio was adopted and the real-time measurement of belt speed by the hardware platform based on DM642 was realized. Finally, experiment results show that this method not only has advantages of high precision and strong anti-jamming capability but also can real-time reflect the changes of belt speed, so it has a comprehensive applicability.

关 键 词：speed measurement by video template matching algorithm DM642 invariance of cross-ratio 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TH432[自动化与计算机技术—计算机科学与技术]