Research Article

Human Skeleton Model Based Dynamic Features for Walking Speed Invariant Gait Recognition

Figure 2

Gait frequency analysis: (a) shows COM signal with peaks at double support phases (half gait cycle); (b) shows DFT spectrum with one outstanding frequency indicating half gait cycle length; (c) shows gait cycle starts detection, where left leg double support is detected by leg signal value at main signal autocorrelation peaks.
484320.fig.002a
(a)
484320.fig.002b
(b)
484320.fig.002c
(c)