Developing the Flaw Inspection Systemon on the Surface of VCD and DVD Disk

• Main Author: 梁俊傑
• Other Authors: 林宜弘
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/51265128839639901130

碩士 === 國立屏東科技大學 === 機械工程系 === 90 === The objective of this research was devoted to develop an automatic inspection system for detecting the flaws on the surface of VCD and DVD disk. A self-designed inspection system is divided into two subsystems including the “feeder-loading and sorter-loading” and the machine vision system. The main equipments of the present inspection system comprise a personal computer, a programmable motion controller, feeder/sorter mechanism and illumination light structure. The inspected disk was initially transported from feeder-loading to place at a rotary plate for further taking images. The disk was fixed by vacuum force and successively captured by two cameras for further detection of various flaws. The flaws of the present investigation including pinholes, scratch, oil stain and clouds were effectively recognized by using the frame processing of image Subtraction, blobs analysis and morphology method. The experimental results indicate that if the flaw area is larger than 0.026mm2, the investigated flaws are completely detected.