Figure 11From: Novel coarse-to-fine dual scale technique for tuberculosis cavity detection in chest radiographs Sample histograms of cavity properties. (a) Histogram of diameter; (b) histogram of circularity; (c) histogram of wall thickness of four categories: “Thick” (≥16 mm), “Intermediate” (4–15 mm), “Thin” (<4 mm), and “Uncertain” (wall not discernible).Back to article page