Figure 3
From: Unsupervised CT Lung Image Segmentation of a Mycobacterium Tuberculosis Infection Model
Lung segmentation evaluation workflow illustrated using a sample sagittal CT slice multiplied by its lung mask: (a) Axial slice of the segmented lung obtained after the Lung and Airway Segmentation and Airway Extraction processes showing holes (black areas inside the parenchyma) and fuzzy boundaries (in yellow); (b) Segmentation after the 3D morphological hole filling process including the holes enclosed by the lung parenchyma; (c) Seeds extracted on the eroded lung surface both in fuzzy boundaries (in yellow) and in TB lesions attached to the pleura (in red); (d) Respiratory motion artifact in the diaphragm area (in yellow) and TB lesion mask (in red) extracted by the combined level set and active contour approach; (e) Final segmentation in which the lesion attached to the pleura has been included and the fuzzy boundaries excluded.
