A Backstage Processing System With License Plate Location Function For Digital Electronic Police System

Along with the economic development of China, the increasingly crowded urban traffic needs more advanced and effective traffic management and control. In keeping with this trend, intelligent transportation has become the main stream of development whose core technology is communication technology, computer image processing technology. For the widely the digital electronic police system, the administration processing system has been designed and developedThe working principle and system of digital electronic police system is analyzed, and the control flow of digital cameras and violation photo features are given. The framework of digital electronic police system is designed, which can greatly improve the efficiency of background and integrates the functions of automatic vehicle identification, information inquiry of car owner and automatic output of punishment list. Following this, a definition of SFP agreement is given which is applied in picture software transmission and effectively balances the server load. For photo processing software, based on its characteristics of high resolution for photo and complex scenes, the procedure of license plate locating is designed: Using Color Edge Detection algorithm to detect the edge then setting the region of license plate, and finally locating the license plate rapidly and precisely. With the Linux software platform and GTK plus library, the algorithm is realized. Meanwhile, the administration processing software is developed based on .net, whose practical value has been proved through field testing.Finally, the work done had been summed up and the existing problems are discussed. The Automatic Vehicle Identification Technology development of future are also prospected...