Vehicle License Plate Localization and License Number Recognition Using Unit-Linking Pulse Coupled Neural Network

  • Ya Zhao
  • Xiaodong Gu
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7667)


In this paper, Unit-linking Pulse Coupled Neural Network (U-PCNN) is applied in vehicle license Plate Localization (PL) and license Number Recognition (NR) being part of optical character recognition(OCR). PL and NR are cores of License Plate Recognition (LPR) system. In PL, firstly, the proposed algorithm based on U-PCNN edge detection highlights plate regions, and then using those results obtains plate locations. In NR, employing U-PCNN extracts features of license number. The experimental results show that the license plates properly extracted were 224 over 233 input images (96.137%) and the NR accuracy is 96.67%.


Unit-linking Pulse Coupled Neural Networks (U-PCNN) Plate Localization(PL) Intelligent Transportation System (ITS) Optical Character Recognition (OCR) 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Ya Zhao
    • 1
  • Xiaodong Gu
    • 1
  1. 1.Department of Electronic EngineeringFudan UniversityShanghaiP.R. China

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