Abstract: Concerning the wild increase of cars that use fake license plate, a fake plate detection system based on grid monitoring was presented. The system used license plate recognition technique to gather car information, such as license plate and the time it appeared. The system automatically detected fake plate with the rules that one car cant appear in two places at the same time. With a reliable license plate recognition technique, it can get a detection rate no less than 99%.

Key words: vehicle detection, license plate recognition, grid monitoring, fake plate, fake plate judgement

摘要： 针对目前套牌车泛滥的现状，提出了一种基于网格化监控的套牌车检测系统。该系统使用车牌识别技术，采集经过监测点车辆的信息，如车牌、出现时间。按照一辆车不可能“同时”出现在两个地点的原理，自动完成套牌检测。在车牌识别技术可靠的基础上，该系统的套牌检测率不低于99％。

关键词: 车辆检测, 车牌识别, 网格化监控, 套牌, 套牌判定