Abstract
License plate recognition is an important technology in many application scenarios such as traffic monitoring and vehicle management. Due to variations of viewpoint, illumination, motion-blur, and degradation in imaging process, it is still a challenging problem to detect and recognize license plates in low quality video images. In this paper, we focus on efficient deep representation learning for license plate recognition, detection and tracking. For license plate recognition, we mainly investigate the configuration of different network structures, and propose to use a network structure with a Convolutional Neural Network (CNN) backbone, an Long Short-Term Memory (LSTM) encoder and a Transformer decoder. For license plate detection, a Transformer encoder-decoder based method is adopted. For license plate tracking, a multi-object tracking method is incorporated by using Kalman filtering and temporal matching to associate detected license plates in video frames. Experiments are carried out on the public large-scale video-based license plate dataset (LSV-LP) to validate the proposed methods.
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Zhao, K., Peng, L., Ding, N., Yao, G., Tang, P., Wang, S. (2023). Deep Representation Learning for License Plate Recognition in Low Quality Video Images. In: Bebis, G., et al. Advances in Visual Computing. ISVC 2023. Lecture Notes in Computer Science, vol 14362. Springer, Cham. https://doi.org/10.1007/978-3-031-47966-3_16
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