Mixed Signature: An Invariant Descriptor for 3D Motion Trajectory Perception and Recognition

Figure 13

These two figures show the matching blocks of DTW in (a) and our method in (b). The matching in (a) can only choose 3 points: (𝑚,𝑛+1), (𝑚,𝑛), and (𝑚+1,𝑛) while all the points on real lines can be matched in (b).

(a)

(b)