Fig. 5.

Average Dice similarity coefficients (DSC; agreement between manual and semi-automated segmentation) obtained from the active shape models (ASMs) that were trained using an increasing number of randomly selected training data (in steps of n = 5) and that were then applied to 20 MRI CSA images from OAI participants to evaluate the segmentation performance. This analysis was performed five times each using a different randomization, and the error bars indicate the minimal and maximal average DSC that was observed for the five runs of the five different randomly training data sets with similar n. Please note that the scale differs between graphs