车牌识别系统matlab附加源代码.doc

ABSTRACT Vehicle license plate recognition system is one important of the modern intelligent traffic management. License plate recognition system to make more intelligent vehicle management, digital, Effective traffic management to enhance the convenience and effectiveness. License plate recognition system includes image acquisition, image preprocessing, license plate localization, character segmentation, character recognition and other five core parts. In this paper, preprocessing, license plate localization, character segmentation method for the realization of three modules.This is the image preprocessing module and the use of the image grayscale Roberts edge detection operator steps. License plate location and segmentation using mathematical morphology method is used to determine the license plate location，Re-use license plate color segmentation method of color information to complete the license plate area segmentation. Character segmentation approach is based on the license plate after the binary part of the vertical projection, Then scan in the vertical projection, thus completing the character segmentation. This article is described for the core part and use the MATLAB software environment, the simulation experiments for character segmentation. Keywords: MATLAB software, image preprocessing, license plate localization, character segmentation . 目 录 1. 绪论 1 1.1 本课题的研究背景 1 1.2 本课题的研究目的及意义 2 1.3 国内外发展状况 3 1.4 主要应用领域 5 1.5 设计原理 6 2. MATLAB简介 7 2.1 MATLAB发展历史 7 2.2 MATLAB的语言特点 7 3．工作流程 9 3.1 系统框架结构和工作流程 9 4．各模块的实现 11 4.1设计方案 11 4.2图像预处理 11 4.2.1图像灰度化 11 4.2.2图像的边缘检测 12 4.3车牌定位和分割 14 4.3.1车牌的定位 15 4.3.2车牌的分割 16 4.3.3对定位后的彩色车牌的进一步处理 17 4.4字符的分割和归一化处理 17 4.4.1字符的分割 18 4.4.2字符的归一化处理 19 4.5 字符的识别 19 5．实验结果和分析 22 6．实验总结 24 致谢 25 参考文献 26 程序附录 27 第一章 绪论 1.1 本课题的研究背景 现代社会已进入信息时代，随着计算机技术、通信技术和计算机网络技术的发展，自动化信息处理能力和水平不断提高，作为现代社会主要交通工具之一的汽车在人们的生产生活的各个领域得到大量使用，对他的信息进行自动采集和管理具有十分重要的意义，成为信息处理技术的一项重要研究课题。 此外，智能交通系统，简称ITS（Intelligent Traffic System）ALPRS或LPRS，该系统