ISSN : 1796-203X
Volume : 4    Issue : 3    Date : March 2009

MCs Detection with Combined Image Features and Twin Support Vector Machines
Xinsheng Zhang, Xinbo Gao, and Ying Wang
Page(s): 215-221
Full Text:
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Breast cancer is a common form of cancer diagnosed in women. Clustered
microcalcifications(MCs) in mammograms is one of the important early sign. Their accurate
detection is a key problem in computer aided detection (CDAe). In this paper, a novel approach
based on the recently developed machine learning technique - twin support vector machines
(TWSVM) to detect MCs in mammograms. The ground truth of MCs in mammograms is assumed to
be known as a priori. First each MCs is preprocessed by using a simple artifact removal filter and a
high-pass filter. Then the combined image feature extractors are employed to extract 164 image
features. In the combined feature domain, the MCs detection procedure is formulated as a
supervised learning and classification problem, and the trained TWSVM is used as a classifier to
make decision for the presence of MCs or not. A large number of experiments were carried out to
evaluate and compare the performance of the proposed MCs detection algorithm. Experimental
results show that the proposed TWSVM classifier is more advantageous for real-time processing of
MCs in mammograms.

Index Terms
mammogram, support vector machine, twin support vector machine, microcalcification, ROC curves