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A modified fuzzy c-means algorithm for bias field estimation and segmentation of MRI data

Ahmed, M.N., Yamany, S.M., Mohamed, N., Farag, A.A., Moriarty, T.·2002·IEEE Transactions on Medical Imaging

Abstract

In this paper, we present a novel algorithm for fuzzy segmentation of magnetic resonance imaging (MRI) data and estimation of intensity inhomogeneities using fuzzy logic. MRI intensity inhomogeneities can be attributed to imperfections in the radio-frequency coils or to problems associated with the acquisition sequences. The result is a slowly varying shading artifact over the image that can produce errors with conventional intensity-based classification. Our algorithm is formulated by modifying the objective function of the standard fuzzy c-means (FCM) algorithm to compensate for such inhomogeneities and to allow the labeling of a pixel (voxel) to be influenced by the labels in its immediate neighborhood. The neighborhood effect acts as a regularizer and biases the solution toward piecewise-homogeneous labelings. Such a regularization is useful in segmenting scans corrupted by salt and pepper noise. Experimental results on both synthetic images and MR data are given to demonstrate the effectiveness and efficiency of the proposed algorithm.

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Metadata

Authors
Ahmed, M. N., Yamany, S. M., Mohamed, N., Farag, A. A., & Moriarty, T.
Venue
IEEE Transactions on Medical Imaging
Published
2002-03
Volume
21
Issue
3
Pages
193-199
ISSN
0278-0062 (ISSN-L)
OpenAlex
W2115242586
Cited by
1,792
References
1
FWCI
26.58
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: A modified fuzzy c-means algorithm for bias field estimation and segmentation of MRI data. https://app.cochat.ai/papers/10.1109/42.996338
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Ahmed, M. N., Yamany, S. M., Mohamed, N., Farag, A. A., & Moriarty, T. (2002). A modified fuzzy c-means algorithm for bias field estimation and segmentation of MRI data. IEEE Transactions on Medical Imaging. https://doi.org/10.1109/42.996338

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