标题: CRT玻璃幕面瑕疵自动视觉检测系统
CRT Screen Defect Inspection by Auto-Vision System
作者: 陈维昱
Wei-Yu Chen
彭德保
工业工程与管理学系
关键字: 电脑视觉;阴极射线管;玻璃;瑕疵检测;Machine Vision;CRT;Glass;Inspection
公开日期: 2002
摘要: 阴极射线管显示器(Cathode Ray Tube,CRT)玻璃幕面乃半透明之玻璃,其生产过程中主要会发生之瑕疵包括:刮痕(scratch)、裂痕(crack)、污点(blemish)及气泡(bubble),而这些瑕疵可能发生于CRT玻璃幕面的内侧及外侧任一处。
虽然目前电脑视觉与自动检测演算法已应用于许多制程的自动检测,然而CRT玻璃幕面之自动视觉检测系统却仍未见于相关文献。由于CRT玻璃幕面需检测之表面相当大(可达40英寸)且呈3D维度之半透明壳状玻璃,本论文将设计出几种影像搜集机构以减少检测影像之取像时间,同时本论文也设计了几种新型的光源系统以辅助瑕疵影像之撷取。
本研究发展之自动视觉检测系统可直接搭载在CRT玻璃幕面生产线上检测,最后将以实验验证本系统之适用性及有效性。
CRT screen is made of translucent glass. The major detects of scratch, crack, blemish and bubble may occur on any inside and outside of the screen surface during the production process.
Though machine vision systems and automatic inspection algorithms are recently used for many automatic inspection processes, no any research paper about vision inspection system for CRT screen defect detection was found. Because the surface of CRT screen to be inspected is very large (up to 40”) and is formed into a 3D translucent hull, in this paper, we devised several kinds of image collecting mechanisms to reduce the screen image capturing time. We also devised several new lighting systems to assist the above mechanisms in screen defects capturing.
The proposed auto-vision inspection system was developed to operate in synchronous with the CRT screen production line. Experimental results show that the propose system can be used to inspect the CRT screen defects efficiently and effectively.
URI: http://140.113.39.130/cdrfb3/record/nctu/#NT910031044
http://hdl.handle.net/11536/69803
显示于类别:Thesis