Subpixel determination of imperfect circles characteristics

摘要: This article deals with the problem of determination characteristics imperfect circular objects in discrete images, namely radius and center coordinates. To limit distortion, a multi-level method based on active contours was developed. Its originality is to furnish set geometric envelopes one pass, correspondence between grayscale regularity scale. The adequacy this approach tested several methods, among them Radon-based method. More particularly, study indicates relevance use combined Radon transform-based which improved using fitting considering implementation transform.