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http://dx.doi.org/10.5302/J.ICROS.2004.10.6.494

Development of Automatic ALC Block Measurement System Using Machine Vision  

엄주진 (단국대학교 전자공학과)
허경무 (단국대학교 전자공학과)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.10, no.6, 2004 , pp. 494-500 More about this Journal
Abstract
This paper presents a machine vision system, which inspects the measurement of the ALC block on a real-time basis in the production process. The automatic measurement system was established with a CCD camera, an image grabber, and a personal computer without using assembled measurement equipment. Images obtained by this system was processed by an algorithm, specially designed for an enhanced measurement accuracy. For the realization of the proposed algorithm, a preprocessing method that can be applied to overcome uneven lighting environment, boundary decision method, unit length decision method in uneven condition with rocking objects, and a projection of region using pixel summation are developed. From our experimental results, we could find that the required measurement accuracy specification is sufficiently satisfied by using the proposed method.
Keywords
image processing; machine vision; measurement; edge decision; curvature calibration;
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