The Community for Technology Leaders
Computer Science and Information Engineering, World Congress on (2009)
Los Angeles, California USA
Mar. 31, 2009 to Apr. 2, 2009
ISBN: 978-0-7695-3507-4
pp: 382-387
An efficient method of detecting circles, called Semi-Random Detection (SRD) based on Right Triangles Inscribed in a Circle (RTIC), is presented. Above all, a 2D compressed Array Space based on the Positions of Valid Pixels (ASPVP) is constructed. And then four points searching method is used to search the corresponding right triangles. After employing a few specific and effective tools such as radius constraint, error distance judgment, data merging etc., real circle check is applied to get the real circles. Some composite images with different levels of noises and some real images have been taken to test the performance. Experimental results show that the proposed algorithm is fast, reliable and spatially compact.
Circle Detection, Right Triangles Inscribed in a Circle, Semi-random Detection, Computer Vision

X. Zhang, J. Liu, D. Tian and F. Shang, "An Improved Circle Detection Method Based on Right Triangles Inscribed in a Circle," 2009 WRI World Congress on Computer Science and Information Engineering, CSIE(CSIE), Los Angeles, CA, 2009, pp. 382-387.
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