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.