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Proceedings Paper

A novel circle detection method using Radon transform
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Paper Abstract

A circle detection method utilizing Radon transform is proposed. In this paper, a closed form solution for the Radon transform of a circular structure is derived from the Radon transform of a round disk. Because the Radon transform of circle has the unique property of invariance to the angle change, a universal matched filter can be constructed from the Radon transform of circle. To detect if there is a circular structure of specific radius presented in the image, a pre-defined matched filter is applied to the Radon transform of the image at all angles and a circle presence intensity image is reconstructed from the filtering results through filtered back projection (FBP). By thresholding the circle presence intensity image, the presence and the location of the circle can be easily determined. The preliminary experimental results show that the proposed method is effective and has better signal to noise ratio in output compared to the typical Hough transform approach.

Paper Details

Date Published: 26 February 2008
PDF: 8 pages
Proc. SPIE 6813, Image Processing: Machine Vision Applications, 68130E (26 February 2008); doi: 10.1117/12.766036
Show Author Affiliations
Honghong Peng, Rochester Institute of Technology (United States)
Raghuveer Rao, Rochester Institute of Technology (United States)

Published in SPIE Proceedings Vol. 6813:
Image Processing: Machine Vision Applications
Kurt S. Niel; David Fofi, Editor(s)

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