Application of Hough Transform on On-line Detection System of PCB
Yin Ying-ju · Journal of Hunan Environment-biological Polytechnic · 2007
In the printed circuit board(PCB) Visual Inspection System,Image Edge Extraction flaws in the quality and image of the edge of rapid and accurate identification is a key factor to achieve real-time detection.Hough transform,the edge detection technology,is widely applied.In this paper,using rapid Hough transform method to complete the center positioning of PCB detection and determination of the radius,PCB through needle-line detection of specific applications to improve its application.Experimental analysis shows that this kind of algorithm is of the feasibility and advantages in the online detection system.5figs.,5refs.