The Research On License Plate Recogntion Technology Based On DSP

The rapid development in science and technology today, people’s living standard has been greatly improved, the car goes into the thousands of households。 With the rapid increase in road vehicles, while put forward higher demands on our road traffic system operation and managment。 In this background, ITS(Intelligent Transportation System) emerge as the times require。 As an important part of ITS system of LPR(License Plate Recognition) system,its importance is increasingly significant。 LPR system itself is also a way to show the realization of intelligent research results, its main include vehicle image video acquisition、License plate area accurate positioning、 character segmentation、character recognition four modules and so on。Because the application scope of LPR system development is wide, such as the goal of real-time vehicle tracking、a certain region of vehicle management and scheduling、vehicle inspection and other aspects, but also because the license plate of china automobile compared with the developed countries of European has strong specificity(license plate contains China characters etc.), so it has realistic significance of research on LPR system suitable for the suitable of our country。Compared with the traditional LPR system is not easy to carry large、large volume、not easy to transplant and other shortcomings、this paper presents a license plate recognition system based on DSP chip, which has the advantages of light weight, small volume, portable advantages, overcome some shortcomings of traditional PC, it has become the development trend of the times。 This article mainly describes the realization of license plate recognition system from three aspects, the first aspect is the study of algorithms for vehicle image processing, here is the algorithm analysis and research of the four modules of car license plate in the image processing, the second aspect is the construction of the hardware system of license plate recognition and some related peripheral expansion on this basis, and with the module algorithms have been implemented for transplantation, accurately identify the license plate number。 Finally, briefly introduced the development and optimization of its software。...