ENHANCING THE EFFICIENCY OF LICENSE PLATE DETECTION USING YOLO AND OPTICAL CHARACTER RECOGNITION Articles
Main Article Content
Abstract
This research aims to 1) develop and enhance license plate detection using YOLO and Optical Character Recognition (EasyOCR) and 2) study and find techniques and algorithms that are accurate and efficient for system design and development. The research employs image processing techniques that include converting images to grayscale, applying Gaussian blur, edge detection using Sobel, binary image analysis, line detection, and image cleanup using morphological processing. The experiments utilized a total of 100 license plate images, and the proposed method achieved an average detection accuracy of 95.26% and a reading accuracy of 78.68%, respectively.
Article Details

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
This article is published and copyrighted by the Science and Technology Journal. South East Bangkok College
References
S. Yang, H. Wang, and L. Wang, "Smart parking systems: review of technologies and issues," IEEE Trans. Intell. Transp. Syst., vol. 21, no. 9, pp. 3668-3680, 2020.
H. Zhang and S. Zhang, "Optical character recognition: A review," J. Inf. Sci., vol. 44, no. 2,
pp. 247-260, 2018.
S. Agrawal and K. D. Joshi, "Indian commercial truck license plate detection and recognition for weighbridge automation," in Proc. IEEE Int. Conf. on Machine Vision and Information Processing (M2VIP), 2022. [Online]. Available:https://doi.org/10.1109/M2VIP55626.2022.10041077. [Accessed: 7 Nov. 2022].
Y. Li, Y. Zhao, J. Fan, M. Liu, J. Jiang, and Y. Wan, "Research and application of license plate recognition technology based on deep learning," J. Phys.: Conf. Ser., vol. 1237, no. 2, pp. 022155, 2020.
J.-S. Chou and C.-H. Liu, "Automated sensing system for real-time recognition of trucks in river dredging areas using computer vision and convolutional deep learning," Sensors, vol. 21, no. 2, p. 555, 2021.
R. Laroca, E. Severo, L. A. Zanlorensi, L. S. Oliveira, G. R. Gonçalves, W. R. Schwartz, and D. Menotti, "A robust real-time automatic license plate recognition based on the YOLO detector," arXiv, 2018. [Online]. Available: https://doi.org/10.48550/arXiv.1802.09567. . [Accessed: 8 Nov. 2022].
P. Kornkaseam, "Thai car license plate classification and recognition using k-nearest neighbor technique," M.S. thesis, Rajamangala University of Technology Thanyaburi, Pathum Thani, Thailand, 2560. [Online]. Available: http://www.repository.rmutt.ac.th/dspace/handle/123456789/3337. . [Accessed: 7 Nov. 2022].
A. Gattawar, S. Vanwadi, J. Pawar, P. Dhore, and H. Mhaske, "Automatic number plate recognition using YOLO for Indian conditions," Int. Res. J. Eng. Technol. (IRJET), vol. 8, no. 1, pp. 1043-1046, Jan. 2021. [Online]. Available: www.irjet.net.
M. L. Nadimpalli, "Thai digit recognition on license plates using Yolov3," M.S. thesis, Asian Institute of Technology, Bangkok, Thailand, 2019. [Online]. Available: http://203.159.5.9/ait-thesis/detail.php?q=B09350.
D. Islam, T. Mahmud, and T. Chowdhury, "An efficient automated vehicle license plate recognition system under image processing," Indonesian J. Electr. Eng. Comput. Sci., vol. 29, no. 2, pp. 1055-1062, 2023. DOI: 10.11591/ijeecs.v29.i2.pp1055-1062.