车牌识别系统外文文献.docx

PAGE 668 PAGE 668 Vehicle License Plate Recognition System Based on Digital Image Processing Yao Yuan,Wu xiao-li Department of Computer SCienCe and Engineering, Henan University of Urban ConstruCtion eyaoyuan@126.Com Akf1cll-Thiplsapler analyzetshe basic method of digitavlideo image processing, studiesthe vehiclle icenspelatreecognition iIn figure 1. system based on image processing in intelligternatnsport system, presents a character recognition approach based on neuralnetwork perceptron to solvethe vehiclelicenseplate Image extraction Image preprocessing recognition in real-timetraffifc lowE.xperimentalresults show that the approach can achieve better positioning effect, has a certain robustness and timeliness.  Recognition results Inìormation recognition Figure I. Vehicle license plate recognition system structure Keywonllicespnl-savtreelctoic/geimnliltiogne; process/IinflJgto,l· oiggilyll INTRODUCTION SinCe the 21st Century, with soCial development and improvement of living standards, the number of vehiCles is Continuously inCreased, the traffiC Conditions is worsening, whiCh brought huge pressures to the soCiety and environment. Intelligent transport system is a real-time, aCCurate, and effiCient transportation management system built based on a relatively perfeCt road infrastruCture and by synthetiCally using the advanCed eleCtroniC teChnology, information teChnology, sensor teChnology and systemiC In the vehiCle liCense plate reCognition system, the image aCquisition is Completed mainly by the hardware, whiCh is to extraCt the foreground image of the vehiCle, to Convert the Cameras video signal to digital image signals to be sent to the Computer for proCessing. BeCause the impaCt of the natural environment and the lighting Conditions, there are many disturbanCes in the liCense plate images, whiCh brings inConvenienCe to the positioning of the liCense plate, so in order to better extraCt the liCense plates, it need