Cyborg and Bionic Systems / 2021 / Article / Fig 4

Research Article

Classifying Motion Intention of Step Length and Synchronous Walking Speed by Functional Near-Infrared Spectroscopy

Figure 4

The comparison chart of subject 1’s channel 15 under the state of small step and low speed. The results of different channels in other states are similar to this one: the blue line represents the original signal, the green line represents the data after mathematical morphology, and the yellow line is the baseline—its value is zero.

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