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

<table>The Samples used in calculating the unknown points (linked by dashed) are denoted by circles. Linear interpolation uses only 2 points in A, while cubic polynomials interpolation uses 4 points in B.</table>

Mathematical Problems in Engineering

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Figure 14

Figure 14: Mixed Signature: An Invariant Descriptor for 3D Motion Trajectory Perception and Recognition 