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. Author manuscript; available in PMC: 2011 Oct 13.
Published in final edited form as: IEEE Trans Signal Process. 2011 Mar;59(3):1309–1316. doi: 10.1109/TSP.2010.2097254

Fig. 3.

Fig. 3

2T-EMD quadrivariate decomposition of the signal s41: (a) original signal (dark) and its 2T-EMD local mean (gray), and (b) exact (dashed line) and estimated (plain line) IMFs projected on the four main axis W, X, Y and Z.