Figure 5

Schematic of post-processing procedure visualised using a distal tibia image. The top row shows the inputs while the bottom row shows the outputs. Block arrows correspond to composite morphological filtering operations: grey—the mask is simply copied, red—iterative binary segmentation filter, pink—minimum cortical shell filter, blue—morphological bone mask filter, and yellow—subtraction (the filtered trabecular mask is subtracted from the filtered bone mask). When multiple arrows converge on the same output mask, this indicates the outputs were combined (union).