13 March 2013 An effective method of locating lisence plate in complex scenes
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Abstract
License plate recognition system(LPRS) is one of the most important parts of the intelligent transportation system(ITS),and the license plate location is the most important step of the LPRS,it derectly affects the performance of the character segmentation and recognition afterward.In this paper,an effective algorithm of lisence plate location is proposed.In this method,Firstly we obtain high frequency coefficient through 1-D discrete wavelet transform. Then we process the image with median filter, binarization and morphology operation.Finally,we label and record the connected regions. Then we can locate the candidate license plates according to the region information. Experiment proved that our method performs well in the long range and complex scenes,and performs well on robustness.
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Jianing Ling, Jianing Ling, Mei Xie, Mei Xie, "An effective method of locating lisence plate in complex scenes", Proc. SPIE 8783, Fifth International Conference on Machine Vision (ICMV 2012): Computer Vision, Image Analysis and Processing, 878314 (13 March 2013); doi: 10.1117/12.2014017; https://doi.org/10.1117/12.2014017
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