毕业论文基于matlab的车牌号码识别系统设计.doc

2012 届毕业设计 基于MATLAB的汽车车牌的 号码识别系统设计 、 部： 电气与信息工程 学生姓名： 指导教师： 职称 专 业： 班 级： 0802 完成时间： 2012年月 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 选题背景 汽车牌照自动识别系统是制约道路交通智能化的重要因素,包括车牌定位、字符分割和字符识别三个主要部分。实验结果表明,本文提出的方法具有的识别性能。1.2 设计前景 牌照自动识别是一项利用车辆的动态视频或静态图像进行牌照号码、牌照颜色自动识别的模式识别技术。其硬件基础一般包括触发设备、摄像设备、照明设备、图像采集设备、识别车牌号码的处理机等，其软件核心包括车牌定位算法、车牌字符分割算法和光学字符识别算法等。某些牌照识别系统还具有通过视频图像判断车辆驶入视野的功能称之为视频车辆检测。一个完整的牌照识别系统应包括车辆检测、图像采集、牌照识别等几部分。当车辆检测部分检测到车辆到达时触发图像采集单元，采集当前的视频图像。牌照识别单元对图像进行处理，定位出牌照位置，再将牌照中的字符分割出来进行识别，然后组成牌照号码输出。1.3 车牌号码识别原理 车辆牌照识别系统的基本工作原理为：将摄像头拍摄到的包含车辆牌照的图像通过视频卡输入到计