毕业设计（论文）-基于labview的车牌识别停车系统设计精选.docxVIP

本科毕业（设计）论文 题 目 基于LABVIEW的车牌识别停车系统设计 学 院 机械工程学院 专 业 测控技术与仪器 学生姓名 学 号 年级 2012 指导教师 职称 2016年 4 月 25 日基于LABVIEW的车牌识别停车系统设计 摘要： 随着停车场的管理系统对网络化、智能化要求越来越高，传统的基于I C卡技术的停车场管理系统已经不再满足要求了。在此背景下，本文提出一种基于LABVIEW的车牌识别停车系统的设计方案。 本系统基于NI VISION视觉开发模块进行车牌识别算法设计，车牌识别算法主要由图像预处理、车牌区域的定位、车牌的识别三大部分组成。对需要识别的图像的具体处理过程分为：读取、大小归一化、车牌倾斜校正、车牌区域初步定位并剪切提取、大小再归一化、剪切去掉提取出的车牌边框、二值化、OCR训练、OCR识别9个步骤。车牌区域的定位是实现车牌识别算法的最关键步骤，本设计主要采用HSL模式下颜色阈值及形态学处理来实现的。车牌识别算法采用的是模板匹配法，是通过LABVIEW的视觉助手的OCR功能实现的。在此进出上进一步设计停车管理系统，主要使用LABSQL，并配合SQL指令来进行开发的。实现了车辆进出门禁的自动识别、登记、计费。其中对零时停车按时计费，对包月车辆不收费。对150个实际采集样本测试，车牌区域定位成功140个，完全识别出125个车牌，测试识别率为83.3%。关键词：LABVIEW 车牌识别 停车场管理 视觉助手 LABSQL License plate recognition and Parking management system based on graphics designSpecialty： The measurement and control technology and instrumentStudent Number：2Student：Zeng Xingyu Supervisor：Cheng YueAbstract:As the parking lot management system of network, the software demand is higher and higher, the traditional parking lot management system based on the technology of I C card is no longer meet the requirements.In this background, this paper proposes a design scheme of license plate recognition system based on LABVIEW The design of parking management system is mainly used LABSQL, and cooperate with the development of SQL commands.The vehicle in and out of the door can be automatically identification, registration, billing.Monthly vehicle for temporary parking pricing, on time in case of no charge.This system based on NI VISION development module for license plate recognition algorithm design VISION, license plate recognition algorithm is mainly composed of the positioning of the image preprocessing, license plate area, the license plate recognition of three parts.The images of the need to identify the specific process is divided into: read, size normalization, license plate tilt correction, preliminary localization and shear plate region extraction, size normalization, shear off again to extract the license plate frame, bin