| Wavelet packet based feature extraction and recognition of license plate characters |
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| 作者姓名： | HUANGWei LUXiaobo LINGXiaojing |
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| 作者单位： | ResearchCenterofIntelligentTransportationSystemsofMOE,SoutheastUniversity,Nanjing210096,China |
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| 摘 要： | ~~Wavelet packet based feature extraction and recognition of license plate characters1. Poon, J. C. H, Ghadia, M., Mao, G. M. T. et al., A robust vision system for vehicle license plate recognition using gray-scale morphology, in Proc. of the IEEE Interna…
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| 关 键 词： | 牌照 自动识别 图像识别 小波数据包 特征抽出 特征识别 |
| 收稿时间： | 18 August 2004 |
Wavelet packet based feature extraction and recognition of license plate characters |
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| HUANGWei LUXiaobo LINGXiaojing.Wavelet packet based feature extraction and recognition of license plate characters[J].Chinese Science Bulletin,2005,50(2):97-100. |
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| Authors: | Wei Huang Xiaobo Lu Xiaojing Ling |
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| Institution: | (1) Research Center of Intelligent Transportation Systems of MOE, Southeast University, 210096 Nanjing, China |
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| Abstract: | To study the characteristics of license plate characters recognition,this paper proposes a method for fea- ture extraction of license plate characters based on two-dimensional wavelet packet.We decompose license plate character images with two dimensional-wavelet packet and search for the optimal wavelet packet basis.This paper pre- sents a criterion of searching for the optimal wavelet packet basis,and a practical algorithm.The obtained optimal wavelet packet basis is used as the feature of license plate character,and a BP neural network is used to classify the character.The test- ing results show that the proposed method achieved higher recognition rate than the traditional methods. |
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| Keywords: | license plate characters recognition feature extrac- tion wavelet packet optimal wavelet packet basis |
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