| 基于小波变换和数学形态法的车牌定位方法研究 |
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| 引用本文： | 郭航宇,景晓军,尚勇.基于小波变换和数学形态法的车牌定位方法研究[J].微机发展,2010(5):13-16. |
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| 作者姓名： | 郭航宇 景晓军 尚勇 |
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| 作者单位： | 北京邮电大学;北京大学; |
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| 摘 要： | 随着智能交通技术的发展,车牌识别系统已成为其中的一个重要环节,一般来说,车牌识别系统分为车牌定位、字符分割和字符识别三个部分。车牌定位作为字符切分和字符识别的前提,在车牌识别中起着关键的作用。在前人研究的基础上提出了一种基于小波变换域和数学形态法相结合的定位方法。首先利用小波变换后垂直细节图像的水平投影进行行定位,然后再对候选区域进行垂直投影,结合车牌自身的特点去除伪车牌区域,最后结合数学形态学知识实现车牌的精确定位。实验证明,该方法在背景较为复杂或存在干扰的情况下具有很好的效果。
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| 关 键 词： | 车牌定位 小波变换 水平投影 垂直投影 形态学 |
License Plate Location Method Based on Wavelet Transform and Mathematical Morphology |
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| GUO Hang-yu,JING Xiao-jun,SHANG Yong.License Plate Location Method Based on Wavelet Transform and Mathematical Morphology[J].Microcomputer Development,2010(5):13-16. |
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| Authors: | GUO Hang-yu JING Xiao-jun SHANG Yong |
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| Affiliation: | GUO Hang-yu1,JING Xiao-jun1,SHANG Yong2(1.Beijing University of Posts , Telecommunications,Beijing 100876,China,2.Beijing University,China) |
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| Abstract: | With the development of Intelligent Transportation System(ITS),License Plate Recognition(LPR)is a key point of it.The license plate recognition consists of 3 parts:license plate location,character segmentation and character recognition.As plate location is the basement of characters cut and recognition,it plays an important role in the License Plate Recognition(LPR).A method for license plate location is proposed based on the wavelet and mathematical morphology.Firstly,the candidate regions is detected by t... |
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| Keywords: | plate location wavelet transform horizontal projection vertical projection mathematical morphology |
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