Surface inspection system using the real-time image processing

We have developed an innovative surface inspection system for automated quality control for steel productions in POSCO. We had ever installed the various kinds of surface inspection systems, such as a linear CCD and a laser typed surface inspection system at cold rolled strip production lines. But these systems cannot fulfill the sufficient detection and classification rate, and real time processing performance. In order to increase detection and classification rate, we have used the Dark. Bright and Transition field illumination and area type CCD camera, and for the real time image processing, parallel computing has been used. In this paper, we introduce the automatic surface inspection system and real time image processing technique using the object detection. defect detection, classification algorithm and its application to automatic quality control system. Copyright (C) 2003 IFAC.