Fig. 4
The cloud diameter of each landmark (calculation method) and its parameter-wise maximum impact at 50%, 75%, and 95% data points. Ph, Ps, Pp, and Pa stand for the point of femoral head center calculated by annotating six points, midpoint of sacral plate calculated from two points denoting its anterior and posterior ends, pubic tubercles, and the center of anterior superior iliac spines, respectively. θmax-PTm and θmax-PTa are the maximum angular impact at a certain probability threshold, which are caused by the pair of landmarks Ph-Ps and Pp-Pa that defines them.
