Modeling of Finger Motions Measured by Leap Motion Controller Using State-Space Model with Step Input

Modeling the motion of experts in sports is important in demonstrating their motion to beginners. A primary approach to this objective is to study the dynamics of a transient response from one position to another. Hence, finger-motion analysis is a primitive but crucial step to be considered. The state-space representation with a step input is used to eliminate the personal habits of experts from their motion and to present simple models to learners according to their learning stages. Based on the deterministic realization and N4SID algorithms, two algorithms are developed to demonstrate simple motions according to the order of the state-space representation. They are applied to the finger motion captured by the Leap Motion Controller.