Application Of Design Patterns And Image Compression In Traffic Alarm System

Traffic Alarm System is an ITS tool .which is used to monitor and detect illegal escape fake license plate mobile vehicle brigandage.Traffic Alarm System has four subsystems: frontal reg-server subsystem image server subsystenu frontal server subsystem, back-end subsystem. Frontal reg-server subsystem captures images and recognise the license plate. It also sends the datum including image data time data hardware data to image server subsystem . Image server subsystem stores the image data and send other datum to next subsystem. Frontal server subsystem provides the interface for back-end subsystem. Back-end subsystem judges whether the car is illegal. These subsystems which have common characteristics are modularized as transmission module data storage and data processing module presentation module. To migrate and expand system easy, many design patterns are referred, analyzing their features. We apply these design patterns to our system, which makes each module interface and its implementation separate. In the similar system, we can reuse the frame and code done before because of high modularization.Image Compression is motived by the special and transmitted limit. Analyzing many compression algorithms, we propose our JPEG algorithm based on standard JPEG. In our JPEG, we use the edge information to conduct selection of quantization table, combined with vehicle images.