Abstract
This paper presents a portable license plate recognition system based on single chip microcomputer with the off-the-shelf mini camera. The system hardware mainly consists of STM32 single-chip microcomputer and the image acquisition sensor OV7670. A TFT color screen is adopted for real time image display and AMS1117 is used for the power conversion and supply. The system uses STM32 MCU to control the overall operation of the license plate recognition system, and controls the mini camera to perform image acquisition through the jump-point analysis and image binary processing method, and then locates the license plate area. With the plate characters successfully localized, the recognition of the license plate is finally obtained through the character segmentation and matching. The experimental results have shown that our system has the best performance under normal light, when the inclination is less than 15° and the character integrity is more than 85%.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant No. 61972207), Jiangsu Provincial Government Scholarship for Studying Abroad and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
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Yang, H., Zhuang, W., Zhou, Q., Dai, D., Zhang, W. (2020). A Portable Intelligent License Plate Recognition System Based on off-the-Shelf Mini Camera. In: Sun, X., Wang, J., Bertino, E. (eds) Artificial Intelligence and Security. ICAIS 2020. Lecture Notes in Computer Science(), vol 12239. Springer, Cham. https://doi.org/10.1007/978-3-030-57884-8_56
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DOI: https://doi.org/10.1007/978-3-030-57884-8_56
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