7Pan Wenmin, Kuah Geok K, Su Shilin, et al. Automatic vehicle classification system[C]//Proceedings of the 2nd International Conference on Applications of Advanced Technologies in Transportation Engineering. Minneapolis, MN, USA, 1991.
8M Tomizuka. Automated Highway Systems: An Intelligent Transportation System for the Next Century[J]. IEEE International Symposium on Industrial Electronics, 1997(1) : 124.
9Micchalopoulos P G. Vehicle Detection Through Video Image Processing: AUTOSCOPE System[J]. IEEE Transactions on Vehicular Technology, 1991,40(1) :21229.
10J Versavel, et al. Camera and Computer Aided Traffic Sensor[C]//IEEE the 2nd International Conference on Road Traffic Monitoring, 1989.
