matlab液晶显示屏缺陷自动光学检测系统研究
本文将设计一套比较完整的自动光学检测系统，包含的内容有：
首先查阅资料，了解国内外该类检测系统的发展状况，分析LCD显示缺陷形成的原因及类型，光学系统设计。
其次，重点研究了相关的图像处理算法，有各种阈值分割、形态学处理、仿射变换等；基于特征图像匹配，边缘检测对比；还有差影法实现缺陷的检测，用matlab软件实现了检测比较容易出现的几种缺陷。25424
最后，用matlab软件将以上的研究融合在一起，设计了用户界面。为本课题进一步的软件设计研究打下基础。
关键词 自动光学检测 图像处理 差影法 matlab
毕业设计说明书外文摘要
Title Research of the LCD defect automatic optical inspection system
Abstract
Automatic optical inspection based on machine vision has fast detection speed,non-contact,high accuracy advantages.To a large extent make up for the deficiency of the traditional manual inspection,have very good application prospectsin the LCD display defect detection industry.
This paper will design a complete set of automatic optical defect detection system, the article contents are as follows:
First of all, access to information, to understand the status of the development of the detection system at home and abroad, analyze the cause and the type of the LCD display defect, optical system design.
Second, the research is mainly focused on the related image processing algorithms, there are all sorts of threshold segmentation, morphology processing, affine transformation, etc;based on the characteristics of the edge of the image registration, contrast edge detection operator; realize the defect subtraction method;using MATLAB software to realize the detection of severaldefects is relatively easy.
Finally,using MATLAB software to the above research together,design the user interface.Have a great role in promoting the in-depth study on the subject.
Keywords AOI image processing subtraction method MATLAB
目 次
1 绪论 1
1.1 论文背景以及意义 1
1.2 国内外发展现状 2
1.3 本论文研究的内容和方法 4
1.4 本章小结 5
2 LCD缺陷及系统设计 6
2.1 显示缺陷的形成及分类 6
2.2 缺陷检测系统设计及框图 9
2.3 系统模块介绍 9
2.4 光学系统设计 9
2.5 本章小结 13
3 系统图像处理 14
3.1 数字图像处理基础知识 14
3.2 阈值分割 14
3.3 形态学处理 17
3.4 仿射变换及二值连通标记 20
3.5 本章小结 22
4 缺陷检测 23
4.1 检测的原理以及框图 23
4.2 检测模板 23
4.3 图像配准 23
4.4 缺陷检测及信息统计 27
4.5 本章小结 29
5 matlab界面设计 31
5.1 图像处理界面 31
5.2 缺陷检测界面 32
5.3 本章小结 33
结 论 34
致 谢 35
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