Abstract
License Plate Recognition (LPR) is one of the critical techniques for ITS. It can be widely used in traffic control and traffic surveillance. License Plate Detection is one of the important components in LPR. In this paper, we propose a method based on wavelet transform to locate the plate zoom. Firstly, we decompose and de-noise the image using wavelet transform; secondly, the vertical gradient is calculated through four components of one level wavelet decomposition, and then, all the vertical gradients of each detail to obtain a summative image are added. Finally, we take a window traversing through the summative image; find out the coordinate that max summation can be gained, the license plate region can be detected. The experimental results show that our method is effective.
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References
Li, J., Xie, M.: A Color and Texture Feature Based Approach to License Plate Location. In: International Conference on Computational Intelligence and Security 2007, pp. 376–380. IEEE, Los Alamitos (2007)
Liu, D., Xie, M.: Detecting License-plate Based on Color Edge From Complex Scenes. In: Signal and Image Processing, Novosibirsk, Russia (2005)
Hung, K.M., Chuang, H.L., Hsieh, C.T.: License Plate Detection Based on Expanded Haar Wavelet transform. In: Fourth International Conference on Fuzzy Systems and Knowledge Discovery (FSKD 2007) (2007)
Hsieh, J.W., Yu, S.H., Chen, Y.S.: Morphology-based License Plate Detection from Complex Scenses. In: 16th International Conference On Pattern Recognition (ICPR 2002) (2002)
Yang, F., Ma, Z.: Vehicle License Plate location Based on Histogramming and Mathematical Morphology. In: Fourth IEEE Workshop on Automatic Identification Advanced Technologies (AutoID 2005) (2005)
Chen, Y.N., Han, C.C., Wang, C.T., Jeng, B.S., Fan, K.C.: The Application of a Convolution Neural Network on Face and License Plate Detection. In: The 18th International Conference on Pattern Recognition (ICPR 2006) (2006)
Becerikli, Y., Olgac, A.V., Sen, E., Coskun, F.: Neural Network Based License Plate Recognition System. In: Proceedings of International Joint Conference on Neural Networks, Orlando, Florida, USA (2007)
Ganzalez, R., Woods, R.: Digital Image Processing, 2nd edn. Prentice Hall, Englewood Cliffs (2003)
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© 2008 Springer-Verlag Berlin Heidelberg
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Pan, J., Yuan, Z. (2008). Research on License Plate Detection Based on Wavelet. In: Huang, DS., Wunsch, D.C., Levine, D.S., Jo, KH. (eds) Advanced Intelligent Computing Theories and Applications. With Aspects of Contemporary Intelligent Computing Techniques. ICIC 2008. Communications in Computer and Information Science, vol 15. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85930-7_56
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DOI: https://doi.org/10.1007/978-3-540-85930-7_56
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-85929-1
Online ISBN: 978-3-540-85930-7
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