An Intelligent Online Presswork Defect Detection Method and System

With the improvement of printing precise and printing speed, manual quality checking is unable to satisfy the demand of high speed printing quality checking. This paper presents a real-time presswork defect detection method and system based on machine vision. It designs an image fusion-basing fiducially image dynamic updating method, uses multi-channel image subtraction to segment defects, and presents a fake defects removing method based on image contour. The real application shows that this inspection method and system is efficient and valid.