Finding circles by an array of accumulators
Carolyn Kimme, Dana H. Ballard, Jack Sklansky · Communications of the ACM · 1975
We describe an efficient procedure for detecting approximate circles and approximately circular arcs of varying gray levels in an edge-enhanced digitized picture. This procedure is an extension and improvement of the circle-finding concept sketched by Duda and Hart [2] as an extension of the Hough straight-line finder [6].