matlab车牌识别系统设计+代码
毕业论文关键词： MATLAB；车牌识别；图像预处理；字符分割；字符识别
License Plate Recognition System and Research based on Matlab
Abstract:
LPR system is an important part of contemporary intelligent traffic management. Management license plate recognition system more intelligent, digital, improve ease of use and effectiveness of traffic management. License plate recognition system includes five core components: image acquisition, image preprocessing, license plate location, character segmentation and character recognition. This document describes the image preprocessing, license plate location, character segmentation and character recognition four modules of implementation. Image preprocessing is grayscale images, the image enhancement and binarization. Complete license plate location using mathematical morphology method, and then the color information of color segmentation plates were pided across the plate. Character segmentation method used is part of the pided plate binarization and vertical projection, rear projection sweep perpendicular to the plane, get segmented characters. Character recognition method based on template matching algorithm, the character soon after the pision with all the templates match, choose the best match as a result.
Keywords: MATLAB; License Plate Recognition;Image Pre-processing;
Character Segmentation;Character Recognition
目录
摘要 i
Abstract i
目录 iii
1 绪论 1
1.1 课题研究背景 1
1.2 课题研究目的和意义 2
1.3 国内外的发展状况 3
1.4 主要应用领域 4
1.5 设计原理 5
2 MATLAB简介 6
2.1 MATLAB发展历史 6
2.2 MATLAB的语言特点 6
3 总体设计方案 8
4 各模块的实现 10
4.1 程序输入待处理原始图像 10
4.2 图像的灰度化 10
4.3 对原始图像进行开操作得到图像背景图像 12
4.4 原始图像与背景图像作减法，对图像进行增强处理 13
4.5 取得最佳阈值，将图像二值化 14
4.6 边缘检测 15
4.7 对得到图像作开操作进行滤波 16
4.8 车牌提取 18
4.9 对水平投影进行峰谷分析 20
4.10 计算车牌旋转角度 23
4.11 去水平（上下）边框,获取字符高度 26
4.12 将计算计算获取的字符图像与样本库进行匹配，自动识别出字符代码 28
5 实验结果及分析 30
6 总结 32
致谢 33
参考文献 34