Context-Aware AAL Services through a 3D Sensor-Based Platform

Table 2

Detection performance of four event classes.

Detected event	Semi-occlusions	Angles	Distances	Feature level frequency (%)				Detection performance (%)
				Lev. 1	Lev. 2	Lev. 3	Lev. 4	TNR	TPR
Falls	Yes	All	All	90	10	0	0	97.5	83.0
Wandering	Yes	All	All	50	20	30	0	92.7	81.6
Activities of daily living	Few	All	Med	50	20	25	5	98.3	96.4
Training exercises	No	Front	Low	5	5	40	50	99.2	95.6