Segmenting Lung Fields in CT Image Using Legendre Moments and Active Contour

Abstract:

Conventional methods that perform lung segment -ation in CT slices rely on a large contrast in hounsfield units between the lung and surrounding tissues. However, the lung fields are affected by high density pathologies, and they are discontinuities in the pixel intensities, the traditional segment- ation methods can’t get the good results. Here, we present a new segmentation method of the active contour, which is constraining with respect to a set of fixed reference shapes of lung fields. This approach is based on the shapes descriptors by the legendre moments computed from the shape regions, and it can be used in some complex lung field segmentation, especially suitable for the segmentation of lung field with the juxta-pleural pulmonary nodules. Experiments illustrate that the proposed method is able to segment the lung fields in the CT images successfully.

• Periodical: Advanced Materials Research (Volumes 433-440)
• Pages: 3564-3569
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.433-440.3564
• Online since: January 2012
• Authors: Jun Lai, Ke Xu
• Keywords: Active Contour, High Density Pathologies, Legendre Moments, Prior Shape, Segmentation

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