Automatic License Plate Recognition System

ALPR, also known as Automatic License Plate Recognition, is a technological system that employs the characters displayed on a vehicle’s license plate to identify and distinguish the vehicle. This information can be used create a reliable license plate-based automatic vehicle identification system. The technology is put into place at security inspection entries in extremely restricted and secure regions including military zones and areas close to significant government institutions like the Supreme Court and Parliament. The suggested ALPR system employs a multi-step approach that involves optical character recognition (OCR), image processing, and character segmentation. In the image processing stage, techniques such as edge detection, noise reduction, and image enhancement are utilized to enhance the quality of the input images. Individual characters are then separated from the license plate by using the character segmentation module, resolving issues like overlapping characters, different fonts, and varying license plate sizes. Through the use of machine learning and pattern recognition algorithms, the OCR module identifies and extracts alphanumeric characters from the segmented regions. The efficiency of the suggested ALPR system is shown by experimental findings, achieving an overall accuracy of 90% with high precision and recall rates for license plate identification. The system's processing time has been observed to fall within acceptable limits, enabling its real-time implementation in practical applications.

I. Introduction

People's lives now include automatic number/license plate recognition, which could be used in upcoming transportation technologies. There are numerous potentials to change the fundamental transportation system using self-driving car concepts. Intelligent transportation systems currently benefit from ANPR technology, which eliminates the need for human intervention. Not only parking lot fences and cameras on the sides of the road. Several of his ANPR systems have also become portable as a result of the development of smartphone technology. Originally employed in automobiles, it has evolved over time to become mobile. Due to its inexpensive implementation costs, ANPR is frequently employed in the toll and parking industries. The primary factor is that, when compared to UHF-RFID systems, ANPR systems recognize registered license plates without the need for additional transponders (Ultra High Frequency-Radio Frequency Identification) systems [1]. In this modern world, the increasing urbanization of nations is a significant development. People are emigrating from rural areas and favoring urban living more and more. As traffic in these places develops, local governments frequently are not aware of the transportation demands of locals and tourists, both now and in the future. ANPR system is increasingly being utilised to research traffic patterns and advance intelligent transportation.