Rib Fracture Detection with Dual-Attention Enhanced U-Net

Figure 2

The procedures of preprocessing: (a) the original CT image, (b) the binary bone region mask after thresholding at 180 HU, (c) the mask after removing small connected components, (d) the mask after morphological dilation, (e) the mask after extracting the largest connected component, (f) the extracted bone regions by applying the mask, (g) the bone regions after data normalization, and (h) the 3D view of the preprocessing output.

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