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http://dx.doi.org/10.5302/J.ICROS.2009.15.8.772

Correction Method for Geometric Image Distortion and Its Application to PCB Inspection Systems  

Lee, Wan-Young (충북대학교 대학원 제어로봇공학과)
Park, Tae-Hyoung (충북대학교 전기전자컴퓨터공학부)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.15, no.8, 2009 , pp. 772-777 More about this Journal
Abstract
The geometric distortion of image is one of the most important parameters that take effect on the accuracy of optical inspection systems. We propose a new correction method of the image distortion to increase the accuracy of PCB inspection systems. The model-free method is applied to correct the randomly distorted image that cannot be represented by mathematical model. To reduce the correction time of inspection system, we newly propose a grid reduction algorithm that minimize the number of grids by the quad-tree approach. We apply the proposed method to a PCB inspection system, and verify its usefulness through experiments using actual inspection images.
Keywords
image correction; optical distortion; inspection systems; quad tree; PCB manufacturing;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 1
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