On the Stability of Lung Parenchymal Lesions with Applications to Early Pneumothorax Diagnosis
Figure 10
Edge detection and risk analysis. (a) and (b) show a lung before and after deformation, with red pixels indicating edge pixels detected by the Sobel Edge Detection algorithm. (c) shows the results of the nonlinear regression analysis performed on different sectors of the lung. Areas characterized as unstable, and thus at risk for lung collapse, are colored in red, whereas areas characterized as stable are colored in green.
