Fully automated gradient based breast boundary detection for digitized X-ray mammograms

Authors:
Pelin Kus;Irfan Karagoz
Affiliations:
Department of Electrical and Electronics Engineering, Gazi University, 06570 Maltepe, Ankara, Turkey;Department of Electrical and Electronics Engineering, Gazi University, 06570 Maltepe, Ankara, Turkey
Venue:
Computers in Biology and Medicine
Year:
2012

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Abstract

Accurate segmentation of the breast from digital mammograms is an important pre-processing step for computerized breast cancer detection. In this study, we propose a fully automated segmentation method. Noise on the acquired mammogram is reduced by median filtering; multidirectional scanning is then applied to the resultant image using a moving window 15x1 in size. The border pixels are detected using the intensity value and maximum gradient value of the window. The breast boundary is identified from the detected pixels filtered using an averaging filter. The segmentation accuracy on a dataset of 84 mammograms from the MIAS database is 99%.