Tracking a Subset of Skeleton Joints: An Effective Approach towards Complex Human Activity Recognition

Table 3

Confusion matrix for activity recognition when using manual selection of joints.

No.	Activity	1	2	3	4	5	6	7	8	9	10
1	Point in a direction	10
2	Pick from ground		10
3	Check watch			10
4	Sit-stand				10
5	Sit and drink				1	9
6	Wave						9			1
7	Handshake							10
8	Dead ball signal		1						9
9	Four signal						2			8
10	Leg bye signal										10