The objective of the work is to compare and improve the accuracy of existing methods for the computation of rigid body parameters from positions, velocities and accelerations of a set of non colinear anatomical landmarks. Instead of the common Euler angles, Cardan angles or Bryant angles, the results are expressed in terms of the screw axis parameters (i.e. axis versor and rotation angle). In clinical analysis the physical meaning of this axis is surely better understood than the named angles. The paper summarizes also the main steps of noteworthy algorithms for the extraction of finite and infinitesimal screw motion parameters from noisy measurements of markers positions, velocities and accelerations. The sensitivity to data errors of the methods reviewed has been investigated by means of numerical tests. A commercial human motion analysis was also used for the field testing.

Tarantino, U., Perugia, D., Campanacci, G., Pennestri', E. (2004). Computation of rigid body motion parameters from video-based measurements. In BIOMECHANICS AND SPORTS.

Computation of rigid body motion parameters from video-based measurements

TARANTINO, UMBERTO;PENNESTRI', ETTORE
2004-01-01

Abstract

The objective of the work is to compare and improve the accuracy of existing methods for the computation of rigid body parameters from positions, velocities and accelerations of a set of non colinear anatomical landmarks. Instead of the common Euler angles, Cardan angles or Bryant angles, the results are expressed in terms of the screw axis parameters (i.e. axis versor and rotation angle). In clinical analysis the physical meaning of this axis is surely better understood than the named angles. The paper summarizes also the main steps of noteworthy algorithms for the extraction of finite and infinitesimal screw motion parameters from noisy measurements of markers positions, velocities and accelerations. The sensitivity to data errors of the methods reviewed has been investigated by means of numerical tests. A commercial human motion analysis was also used for the field testing.
11th Winter Universiads Conference on Biomechanics and Sports
Udine, ITALY
JAN 24-25, 2003
Rilevanza internazionale
2004
Settore MED/33 - MALATTIE APPARATO LOCOMOTORE
English
SCREW PARAMETERS; AUTOMATIC COMPUTATION; SEPARATED POSITIONS
Intervento a convegno
Tarantino, U., Perugia, D., Campanacci, G., Pennestri', E. (2004). Computation of rigid body motion parameters from video-based measurements. In BIOMECHANICS AND SPORTS.
Tarantino, U; Perugia, D; Campanacci, G; Pennestri', E
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/41519
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 0
social impact