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车辆牌照图像识别算法研究与实现   论文
双击自动滚屏 文章来源:   发布者:jsjlw99   发布时间:2009/7/6 11:17:59   阅读:1863
车辆牌照图像识别算法研究与实现
 
摘要:近年来随着国民经济的蓬勃发展,国内高速公路、城市道路、停车场建设越来越多,对交通控制、安全管理的要求也日益提高。因此,汽车牌照识别技术在公共安全及交通管理中具有特别重要的实际应用意义。本文对车牌识别系统中的车牌定位、字符分割和字符识别进行了初步研究。对车牌定位,本文采用投影法对车牌进行定位;在字符分割方面,本文使用阈值规则进行字符分割;针对车牌图像中数字字符识别的问题,本文采用了基于BP神经网络的识别方法。在学习并掌握了数字图像处理和模式识别的一些基本原理后,使用VC++6.0软件利用以上原理针对车牌识别任务进行编程。实现了对车牌的定位和车牌中数字字符的识别。
 
关键词:车牌定位;字符分割;BP神经网络;车牌识别;VC++
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Research and Realization of License Plate Recognition Algorithm
Abstract: In recent years, with the vigorous development of the national economy,there are more and more construct in the domestic expressway, urban road, and parking area. The requisition on the traffic control, safety management improves day by day. Therefore, license plate recognition technology has the particularly important practical application value in the public security and the traffic control. In the paper, a preliminary research was made on the license location, characters segment and characters recognition of the license plate recognition. On the license location,the projection was used to locate the license plate; On the characters segmentation, the liminal rule was used to divide the characters; In order to solve the problem of the digital characters recognition in the plate, BP nerve network was used to recognize the digital characters. After studying and mastering some basic principles of the digital image processing and pattern recognition, the task of  license plate recognition was programmed with VC++ 6.0 using above principles. The license location and the digital characters recognition in the license plate were implemented.
 
Keywords: license location,  characters segmentation,  BP nerve network,  license plate recognition,  VC++

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