A Review of License Plate Localization Methods

Abstract

License Plate Recognition (LPR) is the process of locating and extracting the license plate information of the vehicle from captured images. This technology is widely used in various applications such as finding stolen vehicles, parking lot access control, toll payment, and traffic monitoring system. License Plate Localization is the first phase of license plate recognition to find the location of the license plate from the image. This phase is important for the accuracy of license plate recognition because the performance of the extracting process has depended on the accuracy of locating the license plate. In this paper, we have categorized existing methods of license plate localization based on the applied features. We review the methods in terms of techniques, pros, cons, and limitations. Trends for future development are given at the end.