License Plate Location Algorithm Based on Multiresolution Edge Detection

  • Zhang Baohua
  • Gu Yu
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 163)


Because of low precision of license plate location in the color vehicle images with complex background, a new License Plate Location Algorithm was proposed based on multi-scale edge detection method with wavelet transform. Firstly, we perform WT on two directions respectively, and obtain the magnitude of the 2-D WT. Then detect the maxima magnitude of WT as the image edge and get edge image. At last, the projection approach based on two-way back is adopted to examine up-down and left-right boundary of the car license. Experimental results demonstrate that the proposed method can enhance the images location speed and accurate capture license plate region.


License plate location Multiresolution Edge detection 



This work has been supported by Ministry of Education financing project (Z2009-1-01033), Inner Mongolian University technological project and Inner Mongolian Natural science project (2010MS0907)


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.School of Information EngineeringInner Mongolia University of Science and TechnologyBaoTou City, Inner MongoliaPeople’s Republic of China

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