. Author manuscript; available in PMC: 2018 Jun 15.

Published in final edited form as: Int J Distrib Sens Netw. 2017 Apr 10;13(4):10.1177/1550147717702914. doi: 10.1177/1550147717702914

Table 5.

Standard error reduction of the method with DCM + EMD and EMD only in different speeds.

No. of subjects	Slow speed error (%)		Normal speed error (%)		Fast speed error (%)
No. of subjects	EMD only	DCM + EMD	EMD only	DCM + EMD	EMD only	DCM + EMD
Sub1	5.58	3.03	1.99	0.55	9.48	5.71
Sub2	0.32	1.92	4.55	1.11	7.91	2.28
Sub3	10.7	11.7	2.21	4.13	6.39	4.00
Sub4	4.05	2.85	5.98	4.86	10.3	8.20
Sub5	3.15	1.46	0.66	1.14	5.43	2.72
Standard error reduction	−1.69%		−1.95%		−3.56%

EMD: empirical mode decomposition; DCM: direction cosine matrix.