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一种自适应车牌图像定位新方法

DOI: 10.11834/jig.20091009

Keywords: 车牌识别,车牌定位,图像处理,边缘特征,自适应性

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Abstract:

针对不同尺寸车牌图像的定位问题,提出了一种新的自适应车牌定位方法。该方法首先根据车牌区域的共性来提取图像的纵向边缘;然后由车牌区纵向纹理和边缘密度等特征,采用一系列步骤自适应去除干扰边缘来保留类车牌特征区域;最后通过横向形态学运算使类车牌区闭合,以有效地克服以往形态学结构元素难以随车牌尺寸变化自适应选取的问题;同时提出了根据场景实际情况,选用灰度调整和颜色来判别模块的观点。通过实际场景中大量车牌样本的验证结果表明,该算法不仅准确率较高,而且自适应性良好,具有实用价值。

References

[1]  Bai Hong-liang,Liu Chang-ping.A hybrid license plate extraction method based on edge statistics and morphology[A].In:Proceedings of the 17th International Conference on Pattern Recognition[C],Cambridge,UK,2004:831-834.
[2]  Chang Shyang-lih,Chen Li-shien,Chung Yun-chung,et al.Automatic license plate recognition[J].IEEE Transactions on Intelligent Transportation Systems,2004,5(1):42-53.
[3]  Ning Jin,Tang Yuan Y.Text area localization under complex background using wavelet decomposition[A].In:Proceedings of the Sixth International Conference on Document Analysis and Recognition[C],Seattle,WA,USA,2001:1126-1130.
[4]  Wu Zhou-zhou,Li Shu-guang.Real-time license plate detection based on hierarchical distances between neighboring edge points[J].Journal of Image and Graphics,2007,12(2):315-321.[吴舟舟,李树广.基于分级边缘间距的实时车牌检测[J].中国图象图形学报,2007,12(2):315-321.]
[5]  Qin Zhong,Shi Sheng-li,Xu Jian-min,et al.Method of license plate location based on corner feature[A].In:Proceedings of the 6th World Congress on Intelligent Control and Automation[C],Dalian,China,2006:8645-8649.
[6]  Huang Hac-jie,Li Rong,Chang Hong-sen.A method of license plate location based on adaptive gray-scale morphological filtering[J].Microelectronics & Computer,2007,24(4):95-98.[黄豪杰,李榕,常鸿森.基于自适应灰度形态学滤波的车牌图像分割[J].微电子学与计算机,2007,24(4):95-98.]
[7]  Sun Jia-guang,Yang Chang-gui.Computer Graphics[M].Beijing:Tsinghua University Press,1995:186-187.[孙家广,杨长贵.计算机图形学[M].北京:清华大学出版社,1995:186-187.]

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