On the licence plate recognition algorithm based on image correction and improvement SE-LPRNet

Abstract

Localisation detection and recognition of licence plate plays an important role in road traffic environment. In order to improve the intelligent traffic system and solve the problem of low recognition rate due to tilted licence plate numbers, a licence plate recognition method based on image rectification and improved LPRNet is proposed, and a Chinese parking dataset is used for training and testing. Firstly, the licence plate image is greyscaled, the edges are extracted by Canny operator, the tilt angle is obtained by Radon transform, and the tilted licence plate is cut after tilt correction; then it is recognized based on the model SE-LPRNet. The results show that the average recognition accuracy of the licence plate recognition model is more than 98%, and the proposed method shows strong robustness in the scene of tilted licence plate, and there is also an obvious advantage in recognition speed.