. Author manuscript; available in PMC: 2017 Jun 15.

Published in final edited form as: Med Image Comput Comput Assist Interv. 2016 Oct 2;9901:344–351. doi: 10.1007/978-3-319-46723-8_40

Table 3.

Border positioning errors (mm) achieved by hierarchical classifier, gradient cost and single stage RF classifier.

	NAF+RF (Proposed)	Gradient	p-value	RF only
Femur signed	0.03±0.19	−0.31±0.28	≪ 0.001	−0.06±0.18
Femur unsigned	0.55±0.11	0.68±0.20	≪ 0.001	0.56±0.11
Tibia signed	0.10±0.17	0.08±0.35	0.62	0.16±0.24
Tibia unsigned	0.61±0.14	0.81±0.18	≪ 0.001	0.65±0.17