A modal approach for the soft tissue artefact mathematical representation in optimal joint kinematics estimators - Archive ouverte HAL Access content directly
Conference Papers Year : 2014

A modal approach for the soft tissue artefact mathematical representation in optimal joint kinematics estimators

Abstract

Soft tissue artefact (STA) compensation is the main problem when aiming at optimal bonepose estimate. Given the complexity and specificity of this phenomenon, its compensation can only rely on its general features. This study aims at investigating the effect on joint kinematics estimation of different STA mathematical representations and related degrees of approximation. A modal approach and three different STA definitions (individual marker displacements, MD; marker-cluster geometrical transformations, GT; skin envelope shape variations, SV) were used. Direct measure of thigh and shank STAs from running volunteers, with both skin and pin markers, were used to test which representation and approximation allowed the best improvement of knee kinematics estimate. For both GT and SV definitions, rms errors in knee kinematics were reduced to below 10% of reference rms values, when eleven and fourteen modes were used to approximate thigh and shank STA, respectively.
Fichier principal
Vignette du fichier
ris00000692.pdf (1.22 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01743790 , version 1 (26-03-2018)

Identifiers

  • HAL Id : hal-01743790 , version 1

Cite

Tecla Bonci, Valentina Camomilla, Raphaël Dumas, Laurence Cheze, Aurelio Cappozzo. A modal approach for the soft tissue artefact mathematical representation in optimal joint kinematics estimators. XIII International Symposium on 3D Analysis of Human Movement, Jul 2014, LAUSANNE, Switzerland. 4 p. ⟨hal-01743790⟩
42 View
23 Download

Share

Gmail Facebook X LinkedIn More