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http://dx.doi.org/10.9717/kmms.2013.16.7.829

Lung Segmentation Considering Global and Local Properties in Chest X-ray Images  

Jeon, Woong-Gi (국립암센터 의공학연구과)
Kim, Tae-Yun (국립암센터 의공학연구과)
Kim, Sung Jun (영상의학과, 연세대학교 의과대학)
Choi, Heung-Kuk (인제대학교 컴퓨터공학부, 유비쿼터스헬스케어연구센터)
Kim, Kwang Gi (국립암센터 의공학연구과)
Publication Information
Abstract
In this paper, we propose a new lung segmentation method for chest x-ray images which can take both global and local properties into account. Firstly, the initial lung segmentation is computed by applying the active shape model (ASM) which keeps the shape of deformable model from the pre-learned model and searches the image boundaries. At the second segmentation stage, we also applied the localizing region-based active contour model (LRACM) for correcting various regional errors in the initial segmentation. Finally, to measure the similarities, we calculated the Dice coefficient of the segmented area using each semiautomatic method with the result of the manually segmented area by a radiologist. The comparison experiments were performed using 5 lung x-ray images. In our experiment, the Dice coefficient with manually segmented area was $95.33%{\pm}0.93%$ for the proposed method. Effective segmentation methods will be essential for the development of computer-aided diagnosis systems for a more accurate early diagnosis and prognosis regarding lung cancer in chest x-ray images.
Keywords
Lung segmentation; Active shape models; Localizing region based active contour model;
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Times Cited By KSCI : 9  (Citation Analysis)
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