abstract

• The present study deals with the reconstruction of the continuous-time state space parameters proper of human quiet standing. The reconstruction utilized a hybrid non-linear extended Kalman filter to combine a biomechanical model with the discrete-time position measurements provided by two web-cameras via a General Linear Camera model. After camera calibration and validating the filter in simulation, we performed the estimation on a group of volunteers whose quiet standing was perturbed by means of a hold and release paradigm. The filter allowed estimating stiffness and damping of the ankle during quiet standing as well as the kinematic variables of the subjects%27 center of mass. © 2014 IEEE.
• The present study deals with the reconstruction of the continuous-time state space parameters proper of human quiet standing. The reconstruction utilized a hybrid non-linear extended Kalman filter to combine a biomechanical model with the discrete-time position measurements provided by two web-cameras via a General Linear Camera model. After camera calibration and validating the filter in simulation, we performed the estimation on a group of volunteers whose quiet standing was perturbed by means of a hold and release paradigm. The filter allowed estimating stiffness and damping of the ankle during quiet standing as well as the kinematic variables of the subjects' center of mass. © 2014 IEEE.

authors

• Cárdenas Galindo Juan Antonio
• Piovesan D.
• Romero R.C.

publication date

• 2015-01-01

funding provided via

• Gannon University  Grant

published in

• 2014 IEEE Signal Processing in Medicine and Biology Symposium, IEEE SPMB 2014 - Proceedings  Proceedings

keywords

• biomechanics Extended Kalman Filter; General Linear Camera model; joint stiffness Biomechanics; Continuous time systems; Extended Kalman filters; Kalman filters; Signal processing; Stiffness; Viscoelasticity; Bio-mechanical models; Camera calibration; Continuous-time; Joint stiffness; Kinematic variables; Linear cameras; Stiffness and damping; Viscoelastic properties; Cameras

Digital Object Identifier (DOI)

• 10.1109/SPMB.2014.7002973

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