车牌识别系统的图像预处理毕业论文.doc

本科毕业设计(论文) 题目车牌自动识别系统——图像预处理学院物理与电子工程学院年级 2009 级专业电子信息工程班级学号学生姓名指导教师职称副教授论文提交日期 2013 — 05—28 I 车牌自动识别系统——预处理模块摘要随着我国汽车行业的快速发展,信息化社会的程度不断提高,智能化交通管理成为发展的趋势。车牌自动识别系统( LPRS )是智能化交通管理系统( ITS )的重要组成部分之一,适用于各种交通管理场所, 特别有利于提高管理效率及水平,节省人力、物力,以达到交通管理的科学化的规范,而且有着广泛的应用前景。但是车牌识别系统的研究与开发是限制交通系统智能化、现代化的发展,在智能化交通发展中也倍受关注。车牌识别系统可分为图像的预处理,车牌定位,字符识别 3个部分。本文通过对基于车牌自动识别系统中的辆牌预处理及定位行分析,得出一系列特征信息,并基于这些特征信息,研究了车牌识别的各项关键环节。车牌识别系统预处理模块的设计主要针对智能化交通管理系统的车牌识别进行研究,通过获取汽车的唯一车牌对车辆信息进行采集,经过车牌图像灰度化,图像增强,边缘检测,车牌定位,车牌图像二值化,图像的倾斜校正等模块的研究。关键词:图像预处理车牌定位字符识别 II Abstract In the development of the Chinese automatic vehicle levels ,and social information levels is increasing, traffic management and intelligent e a development trend .Vehicle License Plate Recognition System (LPRS) is the Intelligent Transportation Management System (ITS) of an important part of place of management can be used for all types of vehicles, particularly to improve management efficiency and management level, saving manpower, material resources to achieve vehicle management scientific standard, and thus have broad application prospects. But License plate recognition system, intelligent transportation systems research and development is constrained, modern important factor in the development of modern traffic drawn greater attention. The topic of the vehicle license through analysis ofa series of characteristic information obtained, including the automotive image pre-processing, license plate location, license plate image segmentation and character recognition, etc, designed and implemented a prototype system license plate recognition, and the topic through the analysis ofa series of the automotive image pre-processing , license plate location will obtain lots of conclusions , thus start the analysis of the topic , including Gray processing method of color image , Image enhancement , Edge detection , License plate location steps and soon. Key words : image pre-processing ; license plate recognition ; character recognition III 目录一、绪论.