搜索
焦作大学毕业设计(论文)说明书作者：学号：学院(系)：信息工程学院专业：通信技术题目：基于matlab的车牌识别系统的设计主题：指导教师：职称：讲师2012年12月焦作大学毕业设计说明书II摘要汽车车牌的识别系统是现代智能交通管理的重要组成部分之一。车牌识别系统使车辆管理更智能化，数字化，有效的提升了交通管理的方便性和有效性。车牌识别系统主要包括了图像采集、图像预处理、车牌定位、字符分割、字符识别等五大核心部分。本文主要介绍图像预处理、车牌定位、字符分割三个模块的实现方法。本文的图像预处理模块是将图像灰度化和用Roberts算子进行边缘检测的步骤。车牌定位和分割采用的是利用数学形态法来确定车牌位置，再利用车牌彩色信息的彩色分割法来完成车牌部位分割。字符的分割采用的方法是以二值化后的车牌部分进行垂直投影，然后在对垂直投影进行扫描，从而完成字符的分割。本文即是针对其核心部分进行阐述并使用MATLAB软件环境中进行字符分割的仿真实验。关键词：MATLAB、图像预处理、车牌定位、字符分割焦作大学毕业设计说明书IIIABSTRACTVehiclelicenseplaterecognitionsystemisoneimportantofthemodernintelligenttrafficmanagement.Licenseplaterecognitionsystemtomakemoreintelligentvehiclemanagement,digital,Effectivetrafficmanagementtoenhancetheconvenienceandeffectiveness.Licenseplaterecognitionsystemincludesimageacquisition,imagepreprocessing,licenseplatelocalization,charactersegmentation,characterrecognitionandotherfivecoreparts.Inthispaper,preprocessing,licenseplatelocalization,charactersegmentationmethodfortherealizationofthreemodules.ThisistheimagepreprocessingmoduleandtheuseoftheimagegrayscaleRobertsedgedetectionoperatorsteps.Licenseplatelocationandsegmentationusingmathematicalmorphologymethodisusedtodeterminethelicenseplatelocation，Re-uselicenseplatecolorsegmentationmethodofcolorinformationtocompletethelicenseplateareasegmentation.Charactersegmentationapproachisbasedonthelicenseplateafterthebinarypartoftheverticalprojection,Thenscanintheverticalprojection,thuscompletingthecharactersegmentation.ThisarticleisdescribedforthecorepartandusetheMATLABsoftwareenvironment,thesimulationexperimentsforcharactersegmentation.Keywords:MATLABsoftware,imagepreprocessing,licenseplatelocalization,charactersegmentation.焦作大学毕业设计说明书1目录1.绪论...................................................................................................................................11.1本课题的研究背景.................................................................................................11.2本课题的研究目的及意义.....................................................................................21.3国内外发展状况.....................................................................................................31.4主要应用领域.........................................................................................................51.5设计原理.................................................................................................................62.MATLAB简介......................................................................................................................72.1MATLAB发展历史....................................................................................................72.2MATLAB的语言特点................................................................................................73．工作流程...........................................................................................................................93.1系统框架结构和工作流程.....................................................................................94．各模块的实现.................................................................................................................114.1设计方案................................................................................................................114.2图像预处理............................................................................................................114.2.1图像灰度化................................................................................................114.2.2图像的边缘检测........................................................................................124.3车牌定位和分割....................................................................................................144.3.1车牌的定位................................................................................................154.3.2车牌的分割................................................................................................164.3.3对定位后的彩色车牌的进一步处理........................................................174.4字符的分割和归一化处理....................................................................................174.4.1字符的分割................................................................................................184.4.2字符的归一化处理....................................................................................194.5字符的识别...........................................................................................................195．实验结果和分析.............................................................................................................226．实验总结.........................................................................................................................24致谢.......................................................................................................................................25参考文献...............................................................................................................................26程序附录...............................................................................................................................27