Fig. 3.

Visualisation of the shape model of LSFM-global: mean shape ($\mathit{\mu }$) and first five principal components, each visualized as additions and subtractions away from the mean shape. In more detail, the top (bottom) row corresponds to deviating from $\mathit{\mu }$ in the direction of the corresponding shape eigenvector, with a weight of 3${\mathit{\sigma }}_i$ ($-3{\mathit{\sigma }}_i$), where ${\mathit{\sigma }}_i$ is the standard deviation of the corresponding component