期刊
PATTERN RECOGNITION
卷 41, 期 1, 页码 250-271出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.patcog.2007.03.010
关键词
discrete circles; geometric noise; radon transform; model fitting; active contours
This article deals with the problem of the determination of characteristics of imperfect circular objects in discrete images, namely the radius and center coordinates. To limit distortion, a multi-level method based on active contours was developed. Its originality is to furnish a set of geometric envelopes in one pass, with a correspondence between grayscale and a regularity scale. The adequacy of this approach was tested with several methods, among them is the Radon-based method. More particularly, this study indicates the relevance of the use of active contours combined with a Radon transform-based method which was improved using a fitting considering the discrete implementation of the Radon transform. (C) 2007 Pattern Recognition Society. Published by Elsevier Ltd. All rights reserved.
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