Table 2.

Root mean square (RMS) distances and Hausdorff distances between the five sample bones S1–S5 and their matches predicted by the VGG-based Triplet network and kNN classifier on the 2D image dataset of bones scaled according to their real-world proportions.

Sample bone	Absolute RMS dist. (mm)	Absolute Hausdorff dist. (mm)	Relative RMS dist.	Relative Hausdorff dist.
S1	0.77	2.23	0.0065	0.0188
S2	0.72	2.89	0.0066	0.0266
S3	0.73	2.72	0.0058	0.0217
S4	1.26	5.09	0.0114	0.0462
S5	0.82	2.62	0.0061	0.0195
S1–S5 average	0.86	3.11	0.0073	0.0266

Absolute RMS distance is given in mm; relative distances are given with respect to the bounding box diagonal.