A system designed for black-spot´s automatic identification

An automatic identification system for the OLED´s black-spot detection was designed in this paper. Complete approaches based on machine vision technology are proposed to get the sub-pixel location of black-spots. In this method, feature area is recognized based on the identification of spots´ edge characteristics. The method of circle fitting is used to get positions of the spots´ center. The experiments show that this system can realize the automatic identification for black spot´s feature and center in sub-pixel. The accuracy of algorithm is better, and its self-adaptability is high. It provides an necessary condition for further research of OLED defect detection.