What is a license plate recognition system?

License plate recognition system is the application of computer video image recognition technology in vehicle license plate recognition. License plate recognition is widely used in expressway vehicle management, and Electronic Toll Collection (ETC) system is also the main means to identify vehicles by DSRC technology.

License plate number recognition system is a complete system based on license plate recognition technology. Firstly, the moving vehicle license plate is extracted from the complex background, and the vehicle license plate number is recognized and output through the technologies of license plate extraction, image preprocessing, feature extraction and license plate character recognition. The recognition rate of letters and numbers can reach 96% and the recognition rate of Chinese characters can reach 95%.

In parking lot management, license plate recognition technology is also the main means to identify vehicles. In the technical requirements of vehicle image and license plate information collection and transmission system in Shenzhen public parking garage (parking lot), license plate recognition technology has become the main means of vehicle recognition.

Vehicle license plate recognition technology combined with electronic toll collection system (ETC) can realize automatic vehicle recognition and automatic toll collection when passing through the intersection. In the management of parking lots, in order to improve the traffic efficiency of vehicles at the entrance and exit, license plate recognition is changing the management mode of entering and leaving the parking lot. For vehicles that don't need to charge parking fees (such as monthly trucks and internal free vehicles), unattended fast lanes are built to avoid picking up cards for parking.