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

Table 3

Sign matching of two types of “4”.

Match group	Previous signature			Mixed signature
	Average	Min	Max	Average	Min	Max
Type A-A	12.5	11.0	14.2	23.3	21.1	24.6
Type B-B	11.5	10.2	12.3	21.9	18.1	25.3
Type A-B	14.7	12.6	18.9	32.6	25.0	37.4