License plate recognition:

‌ Vehicle License Plate Recognition (VLPR) is a technology that uses computer video image recognition technology to automatically recognize automobile license plates. ‌ It is equipped with hardware and software platforms such as digital camera equipment and computer information management system to collect vehicle images, and uses advanced image processing, pattern recognition and artificial intelligence technology to recognize license plate numbers. The specific steps include finding the location of the license plate in the image, extracting the text, letters and numbers on the license plate, and finally giving the real number of the license plate. ‌ 1
License plate recognition technology is widely used in many fields, such as traffic management, parking lot management and public security law enforcement. Through license plate recognition, vehicle information can be quickly and accurately obtained, improving the efficiency of traffic management, reducing manual intervention, and helping to monitor and record the vehicle’s driving trajectory. In addition, license plate recognition technology can also be applied to vehicle access control, illegal parking detection and vehicle classification statistics.
In terms of technical realization, the license plate recognition system usually includes the steps of image acquisition, preprocessing, license plate positioning, character segmentation and character recognition. The pre-processing stage includes image enhancement, noise filtering and binarization to improve the accuracy of recognition. License plate positioning is to determine the position of the license plate in the image through image processing technology, and character segmentation is to separate the characters on the license plate for recognition. Finally, the segmented characters are converted into text information by optical character recognition (OCR) technology.