Extending the Sigma-Lognormal model of the kinematic theory to three dimensions

Schindler, Roman (DIUF department, DIVA group, University of Fribourg, Fribourg, Switzerland) ; Bouillon, Manuel (DIUF department, DIVA group, University of Fribourg, Fribourg, Switzerland) ; Plamondon, Réjean (Laboratoire Scribens, École Polytechnique de Montéral, Montréal, Québec, Canada) ; Fischer, Andreas (School of Engineering and Architecture (HEIA-FR), HES-SO // University of Applied Sciences Western Switzerland)

The Kinematic Theory of rapid human movements and its Sigma-Lognormal model enables to model human gestures, in particular complex handwriting patterns such as words, signatures and free gestures. This paper investigates the extension of the theory and its Sigma-Lognormal model from two dimensions to three, taking into account new acquisition modalities (motion capture), multiple subjects, and unconstrained motions. Despite the increased complexity and the new acquisition modalities, we demonstrate that the Sigma-Lognormal model can be successfully generalized to describe 3D human movements. Starting from the 2D model, we replace circular with spherical motions to derive a representation of unconstrained human movements with a new 3D Sigma-Lognormal model. First experiments show a high reconstruction quality with an average signal-tonoise ratio (SNR) of 18.52 dB on the HDM05 dataset. Gesture recognition using dynamic time warping (DTW) achieves similar recognition accuracies when using original and reconstructed gestures, which confirms the high quality of the proposed model.


Keywords:
Conference Type:
full paper
Faculty:
Ingénierie et Architecture
School:
HEIA-FR
Institute:
iCoSys - Institut des systèmes complexes
Subject(s):
Ingénierie
Publisher:
Montréal, Québec, Canada, 14-17 May 2018
Date:
2018-05
Montréal, Québec, Canada
14-17 May 2018
Pagination:
5 p.
Published in:
Proceedings of ICPRAI 2018 - International Conference on Pattern Recognition and Artificial Intelligence, Celebrating the 30th Anniversary of CENPARMI, 14-17 May 2018 + Public Lecture on 13 May 2018, Concordia University, Montréal, Canada
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 Record created 2019-02-26, last modified 2019-03-05

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