A new method for non-linear distortion correction of Chinese vehicle license plate

Qirui Zhao; Zhenyu Hu D.V.M.; Wei Xu; Maojun Zhang

doi:10.1117/12.2281746

21 July 2017 A new method for non-linear distortion correction of Chinese vehicle license plate

Qirui Zhao, Zhenyu Hu D.V.M., Wei Xu, Maojun Zhang

Proceedings Volume 10420, Ninth International Conference on Digital Image Processing (ICDIP 2017); 104202E (2017) https://doi.org/10.1117/12.2281746
Event: Ninth International Conference on Digital Image Processing (ICDIP 2017), 2017, Hong Kong, China

Abstract

Since the image acquisition is interfered by various factors, and the image of the license plate is often distorted, the distortion correction of the license plate image is of great significance to improve the accuracy of the license plate recognition. In this paper, we propose a new method to segment distorted images for linear approximation. The main idea is to segment the non-linear distorted license plate images into linear parts according to the license plate character, searching for the corners of each part, then reconstructing the non-linear distortion of the license plate image by using the perspective projection model, finally realizing the license plate image correction. Experimental results show that the proposed method is effective for the correction of non-linear distortion plate images.

Citation Download Citation

Qirui Zhao, Zhenyu Hu D.V.M., Wei Xu, and Maojun Zhang "A new method for non-linear distortion correction of Chinese vehicle license plate", Proc. SPIE 10420, Ninth International Conference on Digital Image Processing (ICDIP 2017), 104202E (21 July 2017); https://doi.org/10.1117/12.2281746

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