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Proceedings Paper

Unsupervised segmentation of lungs from chest radiographs
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Paper Abstract

This paper describes our preliminary investigations for deriving and characterizing coarse-level textural regions present in the lung field on chest radiographs using unsupervised grow-cut (UGC), a cellular automaton based unsupervised segmentation technique. The segmentation has been performed on a publicly available data set of chest radiographs. The algorithm is useful for this application because it automatically converges to a natural segmentation of the image from random seed points using low-level image features such as pixel intensity values and texture features. Our goal is to develop a portable screening system for early detection of lung diseases for use in remote areas in developing countries. This involves developing automated algorithms for screening x-rays as normal/abnormal with a high degree of sensitivity, and identifying lung disease patterns on chest x-rays. Automatically deriving and quantitatively characterizing abnormal regions present in the lung field is the first step toward this goal. Therefore, region-based features such as geometrical and pixel-value measurements were derived from the segmented lung fields. In the future, feature selection and classification will be performed to identify pathological conditions such as pulmonary tuberculosis on chest radiographs. Shape-based features will also be incorporated to account for occlusions of the lung field and by other anatomical structures such as the heart and diaphragm.

Paper Details

Date Published: 23 February 2012
PDF: 6 pages
Proc. SPIE 8315, Medical Imaging 2012: Computer-Aided Diagnosis, 831532 (23 February 2012); doi: 10.1117/12.911574
Show Author Affiliations
Payel Ghosh, Lister Hill Ctr. for Biomedical Communications (United States)
National Library of Medicine (United States)
National Institutes of Health (United States)
Sameer K. Antani, Lister Hill Ctr. for Biomedical Communications (United States)
National Library of Medicine (United States)
National Institutes of Health (United States)
L. Rodney Long, Lister Hill Ctr. for Biomedical Communications (United States)
National Library of Medicine (United States)
National Institutes of Health (United States)
George R. Thoma, Lister Hill Ctr. for Biomedical Communications (United States)
National Library of Medicine (United States)
National Institutes of Health (United States)


Published in SPIE Proceedings Vol. 8315:
Medical Imaging 2012: Computer-Aided Diagnosis
Bram van Ginneken; Carol L. Novak, Editor(s)

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