Automatic car plate recognition using artificial intelligence

• Main Author: Zhu, Ziwei
• Other Authors: Yap Kim Hui
• Format: Thesis-Master by Coursework
• Language: English
• Published: Nanyang Technological University 2022
• Subjects: Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/162680
• Institution: Nanyang Technological University

As one of the critical technologies of the intelligent transportation system, the license plate recognition system has developed rapidly in recent years. In particular, new deep learning methods promote the update of license plate recognition algorithms. The license plate recognition algorithm can complete the recognition under complex conditions such as blurred images, uneven illumination, and tilted license plate. However, its vast computational load and slow recognition efficiency make it challenging to deploy the algorithm to the front of the device. For this reason, our primary work is as follows: (1)Design and implement an end-to-end real-time license plate recognition algorithm. We use the method of feature separation and feature recombination to design and implement a separate license plate detection network. It improves the speed of the license plate recognition algorithm effectively. (2)We improve the expression of the license plate shape as a five-dimensional vector and propose a rotating RoIAlign operation matching the five-dimensional vector. (3)We use the newest license plate dataset for model training and testing. Our model performs better and can be better applied to some scenes. Keywords: license plate recognition, end-to-end, Rotating RoIAlign.