Ten lectures on wavelets
The analysis of digital mammograms: spiculated tumor detection and normal mammogram characterization
The analysis of digital mammograms: spiculated tumor detection and normal mammogram characterization
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In this paper, we present a novel approach to the classification of digital mammograms into normal and abnormal classes for breast cancer detection. First, the structures in mammograms produced by normal glandular tissue of varying density are eliminated using a Wavelet Transform (WT) based local average subtraction. Then the linear markings formed by the normal connective tissue are identified and removed. Any abnormality that may exist in the mammogram is therefore enhanced in the residual image, which makes the decision regarding the normality of the mammogram much easier. Features derived from the residual images are applied to a Probabilistic Neural Network (PNN) for classification.