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http://dx.doi.org/10.6109/jkiice.2014.18.9.2203

An Improved Hough Transform Using Valid Features  

Oh, Jeong-Su (Department of Image Science & Engineering, Pukyong National University)
Abstract
The Hough transform (HT), that is a typical algorithm for detecting lines in images, needs considerable computational costs and easily detects pseudo-lines on the real world images, because of the large amount of features generated by their complex background or noise. This paper proposes an improved HT that add a preprocessing to estimate the validity of features to the conventional HT. The feature estimation can remove a lot of inessential features for the line detection using a pattern of $3{\times}3$ block features. Experiments using various images show that the proposed algorithm saves computational costs by removing 14%~58% of features depending on images and besides it is superior to the conventional HT in valid line detection.
Keywords
Hough transform; line detection; valid feature; block pattern;
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