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摘要现在，随着计算机图像处理技术的进步，设计对车辆牌照的识别程序并有较高的成功率也变得越来越重要了。该系统主要涉及的不仅仅有光学、人工智能、还有数字图像处理、电子控制等。其是通过对图像采集仪器等所采集到的车辆图像做比较全面的系统分析，然后得出汽车独有的牌照，完成系统要求并输出。接着再进行后期的处理就可以实现一系列现代化车辆管理的要求，例如交通流量控制、车辆的定位、汽车防盗与行驶中超速的自动化监管功能等。这就在很大程度上文护了城市的治安与交通的秩序，同时也对实现交通自动化起着重大的作用。
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课题研究的是在matlab软件上对车牌的识别系统设计的实现，它对输入的车牌图片进行一系列处理。例如，灰度变换、边缘检测、二值化、图像增强等。这个将车牌中的字符单独分割出来。图像的预处理模块是将图像灰度化和用Roberts对边框做测试，接着再进行牌照定位与分割是对其进行开启与闭合操作，并在X与Y上寻出牌照的位置并定位出来。它再进行进行分割出车牌区域，接着分割出单独字符，最终再经过归一化后用字符模板匹配的方法，识别出单个字符再输出识别结果。26189
毕业论文关键词：Roberts算子；Matlab；边缘检测；二值化
Abstract
Now, the development of computer image processing technology, the design of the vehicle license plate recognition program becomes more and more important. The system includes optics, artificial intelligence, digital image processing, electronic control etc. Through the collected vehicle images to do a comprehensive analysis, and then get a unique car license, complete the requirements and output. Then we can achieve the requirements of the modern vehicle management after the processing of the later stage. Such as traffic flow control, vehicle positioning, car theft and speeding automatic regulatory functions, etc. This largely maintains the order of the city's peace and order, and plays a major role in the realization of the traffic automation.
This is the MATLAB software for the license plate recognition system design. It is also the input of a series of license plate image processing. For example, gray transformation, edge detection, two value, image enhancement etc. It separates the characters from the license plate separately. Image processing is the gray image and the border to do the test. It then license plate location and segmentation of the open and closed operation and in the X and Y sought out the position of plate and positioning out. Finally, the segmentation of the license plate region and the separate characters are separated, and then the method of template matching is used to recognize the results of single character and output recognition.
Key words：Roberts operator Matlab Edge detection Binarization
目 录
第一章 概述 3
1.1 引言 3
1.2 论文的内容与结构 3
1.2.1研究内容 3
1.2.2 论文结构 4
第二章 图像处理的理论基础 5
2.1 图像处理的基础 5
2.2 Matlab的简介 5
第三章 系统分析与设计 6
3.1 图像预处理 6
3.1.1 图像灰度变换 7
3.1.2 图像边缘检测 7
3.1.3 图像增强 8
3.2 车牌定位 9
3.2.1 车牌区域定位 10
3.2.2 车牌区域分割 10
3.2.3 车牌的二值化 10
3.3 字符分割、字符归一化与识别 11
3.3.1 字符分割 11
3.3.2 字符归一化 12