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Article

End-to-End Application of Convolutional Neural Networks in License Plate Recognition

Jian Sun

Iowa State University, Ames, IA 50011, USA.

*Corresponding author: Jian Sun

Published: 21 October 2025 How to cite this paper

Abstract

License Plate Recognition (LPR) is a critical component of intelligent transportation systems, widely applied in electronic toll collection, traffic violation monitoring, and other fields. Traditional methods rely on manual feature extraction and modular design, leading to insufficient robustness and complex processing pipelines. This paper proposes an end-to-end LPR method based on Convolutional Neural Networks (CNN), integrating license plate detection and character recognition into a unified framework to improve accuracy and computational efficiency. The proposed approach employs an improved detection network to localize license plates, incorporates a Spatial Transformer Network (STN) to rectify tilted plates, and utilizes a Connectionist Temporal Classification (CTC)-based sequence recognition module for character prediction. Experimental results demonstrate that the proposed method achieves high detection and recognition accuracy on public datasets (e.g., CCPD, AOLP), outperforming traditional two-stage approaches and existing deep learning models. This study provides an efficient and robust solution for LPR in complex environments.

KEYWORDS: License Plate Recognition (LPR); Convolutional Neural Network (CNN); end-to-end learning; Spatial Transformer Network (STN); Connectionist Temporal Classification (CTC)

References

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How to cite this paper

Jian Sun. End-to-End Application of Convolutional Neural Networks in License Plate Recognition. OA Journal of Computer Networking, 2025, 4(1), 1-4.


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