Algorithms for license plate detection :A survey

To identify a vehicle, License Plate identification technology is the key technology of intelligent transport system, finding a stolen vehicle, monitoring traffic flow, in townmanagement, highway tolls etc. The major issue in such applications is to detect the exact location of plate, becausefinding the location of number plate could vary and as well as its size and color; many of the vehicles have an uncertain difference in License plate position, location and uncleanLicense Plate. In this paper we have conducted a very fresh survey of most authentic techniques of license plate detectionfrom a car, we studied different techniques and compared them; we figured out every technique has its own limitations, everymethod gives best results under some certain conditions so do bad results, we figured out all we need to do is to have locus of control, we shall control the environment we are working in, some techniques works good in dark light, some for bright light etc; every technique has its own parameters toidentify license plate; this paper will lead you to choose the best technique for detection just according to your circumstance

کلیدواژه ها:

License plate detection ، DWT (Discrete wavelet transform) ، ANN (artificial neural networks) ، Morphological Operator