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Part of the book series: Communications in Computer and Information Science ((CCIS,volume 15))

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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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De-Shuang Huang Donald C. Wunsch II Daniel S. Levine Kang-Hyun Jo

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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

  • eBook Packages: Computer ScienceComputer Science (R0)

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