摘要
针对LCD显示缺陷检测的重要性以及人工检测速度慢、漏检率高的弊端,提出了一种基于图像形状匹配的LCD显示缺陷自动光学检测方法。该方法的基本原理是:待测图像与标准图像形状配准后建立缺陷模型,利用灰度平均模板与容差模板等信息,通过动态阈值分割的方法检测LCD显示缺陷。实验结果与现场应用表明:采用该方法制作的设备检测速度快,检测正确率达到98.5%,可以替代人眼检测白点、黑点、缺划等LCD显示缺陷,完全达到实际应用的要求。
In allusion to the importance of the inspection for the LCD display defect and the disadvantage of low efficiency and low reliability depend on manual inspection, an AOI method based on shape-based matching algorithm for LCD display defect inspection was proposed .Basic fundamental of the method was as follows：defect model was build after doing shape matching in the detecting image and standard image.With gray-average template and tolerance template, LCD display defect was inspected by method of dynamic threshold operation .Experimental results and application in the industry show that the equipment based on this method could inspect the LCD display defect such as white spot, black spot and stroke-lose rapidly and accurately instead of the manual inspection, which could be used in industrial applications.
出处
《电子设计工程》
2012年第24期1-4,7,共5页
Electronic Design Engineering
基金
粤港招标关键领域重点突破项目(W0511159)
