Fig. 2
From: Lung nodule pre-diagnosis and insertion path planning for chest CT images
Classification and diagnosis. Results of preliminary segmentation, a CT gray image after Gauss filtering. b Initial segmentation of lung parenchyma. c Left/right lung extracted from initial segmentation of lung parenchyma Lung parenchyma segmentation based on the mathematical morphology, d holes filling, e boundary repairing, f final result of lung parenchyma, g possible pulmonary nodules located in segmentation region. h–j Sketch of some pulmonary nodules