摘要
显示屏在生产、组装过程中易出现多种类型的缺陷,传统的人工检测方法工作量大,主观性强,检测标准难以量化,误判率高。为此,提出一种使用折线阈值对候选区域对比度进行阈值判断的显示屏缺陷检测方法。通过计算候选区域对比度来检出点状、块状、Mura缺陷,候选区域对比度的计算方式克服了显示屏亮度不均匀产生的影响,使用折线阈值对候选区域对比度进行阈值判断,提高了低对比度Mura缺陷的检测精度。
Screens are prone to many types of defects during the production and assembly process,the traditional manual detection method has a heavy workload and strong subjectivity,the detection standard is difficult to quantify,and the misjudg-ment rate is high.A defect detection method for screen using broken line threshold to judge the candidate-area-contrast is proposed in this paper.The dot,block,and Mura defects are detected by calculating the candidate-defect-contrast,the calculation method of candidate-area-contrast overcomes the influence caused the uneven brightness of the screen,the broken-line thresholding is used to threshold candidate-area-contrast,which improves the detection accuracy of low-contrast Mura defects.
出处
《工业控制计算机》
2022年第5期67-69,共3页
Industrial Control Computer
关键词
缺陷检测
Mura缺陷
候选区域对比度
折线阈值
defect detection
Mura defect
candidate-area-contrast
broken-line thresholding
