Abstract:
In this study, we attempted to discriminate the acceleration signal for horizontal
level and stairway walking using wavelet-based fractal analysis method. The acceleration
signal was measured close to the center of gravity of the body, while the subjects
walked continuously in the corridor and up and down the stairs. We used the wavelet-based
fractal analysis method to discriminate walking pattern. The parameter H which is
related directly to the fractal dimension was estimated by the wavelet coefficient
and was changed into low value during walking upstairs. By manually setting the threshold
level for individual, it was possible to discriminate walking upstairs from the other
walking type. However, the common feature among subjects was not shown between level
walking and walking downstairs.
Keywords:
Gait - Acceleration - Wavelet Transform - Fractal Dimension
