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Gradient-based Fast Connectivity Weighted Hough Transform  

Kim, Jeong-Tae (이화여자대학 전자정보통신학과)
Shin, Ji-Young ((주)포스데이타)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.57, no.4, 2008 , pp. 715-717 More about this Journal
Abstract
The connectivity weighted Hough transform is a useful method for detecting well-connected short lines without generating false lines yet requires extensive computation. This letter describes a method that reduces the computation of the connectivity weighted Hough transform by removing unnecessary weight calculations using the gradient angles of feature points. In simulations with synthetic images and experiments with liquid crystal display panel images, the proposed method showed significantly improved speed without compromising detectability.
Keywords
Hough transform; Connectivity; Gradient; LCD panel inspection; Line defects;
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