Fig. 6
From: Adaptive multichannel FES neuroprosthesis with learning control and automatic gait assessment
The distance matrix between the foot-to-ground angle of one step of a SCI participant and the mean foot reference angle. Each sample of the reference is compared to each sample of the measurement and the distance of the two signals visualized as a pixel of the matrix. Black indicates no distance and white indicates the largest distance. The area that can be reached by the DTW is limited by the chosen fundamental steps. For the steps chosen, the grayed-out area cannot be reached by the DTW. (
) is the resulting optimal warping path and (
) are two examples of matched samples