Table 2.

The parameters of perturbation modes.

Perturbation modes	Perturbation range	Reference axis	Perturbation number	Total number
Translation distance (mm)	0 to 3 with a 0.2 step size	AP, SI, LM	4,096	4,423,680
Rotation angles (degree)	-20 to 20 with a 5 step size	SI	9
Noise addition level	0, 1, 2, 3	–	4
Contour Randomization	30	–	30

AP, anterior-posterior; SI, superior-inferior; LM, lateral-medial.