期刊
PATTERN RECOGNITION
卷 45, 期 4, 页码 1255-1264出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.patcog.2011.09.018
关键词
Cervical cell; Boundary extraction; Radiating gradient vector flow; Active contour
资金
- City University of Hong Kong [7002696]
- Natural Science Foundation of China [91024012, 60603015, 60970034]
- Foundation for the Author of National Excellent Doctoral Dissertation [2007B4]
A Radiating Gradient Vector Flow (RGVF) Snake aiming at accurate extraction of both the nucleus and cytoplasm from a single-cell cervical smear image is proposed. After preprocessing, the areas in the image are roughly clustered into nucleus, cytoplasm and the background by a spatial K-means clustering algorithm. After initial contours are extracted, the image is segmented using RGVF. RGVF involves a new edge map computation method and a stack-based refinement, and is thus robust to contaminations and can effectively locate the obscure boundaries. The boundaries can also be correctly traced even if there are interferences near the cytoplasm and nucleus regions. Experiments performed on the Herlev dataset, which contains 917 images show the effectiveness of the proposed algorithm. (C) 2011 Elsevier Ltd. All rights reserved.
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