Filtering Motion Data Through Piecewise Polynomial Approximation

Vittorio Lippi^*, Carlo Alberto Avizzano^* and Emanuele Ruffaldi^*

^* PERCRO, Scuola Superiore Sant'Anna, Italy
E-mail: v.lippi@sssup.it, c.avizzano@sssup.it, e.ruffaldi@sssup.it

Abstract

In this work we propose a system to filter human movement data and store them into a compact representation. We are interested both in noise reduction and in segmentation. The method described in this paper relies on a iterative optimization and guarantee to converge to a local optimum: it proved anyway to produce stable results and to provide an accurate segmentation on the analyzed data . We analyze the Three ball cascade Juggling as case study: This provides us the challenge to represent both low-pass dynamics of human limbs and juggled balls and the discontinuities produced by contact forces.