Affordable Access

Validering av Inertial Measurment Units som insamlare av data för drivande av OpenSim-modell

Authors
  • Holm, Malin
  • Roepstorff, Christoffer
  • Svedberg, Martin
Publication Date
Jan 01, 2012
Source
DiVA - Academic Archive On-line
Keywords
License
Unknown
External links

Abstract

The purpose of this paper is to investigate the possibility of replacing data from highspeed filming (Qualisys motion capture) with data from Inertial Measurement Units (X-io technologies), when used to run a model of torso and pelvis in OpenSim. Qualisys motion capture data is used as the golden standard to validate the result visually and with Bland-Altman plots. In order to obtain comparable data experiments are conducted where both methods of collecting data are used simultaneously. Data from the IMU's then need to be processed in Matlab before it can be used to run the OpenSim modell. Several Matlab programs rotate the IMU data to a static reference frame, filter and integrate it, then create viritual markers that correspond to Qualisys' optical markers. The conclusion is that using IMU as a method for collecting data can replace Qualisys in some applications, but not in ones that require high precision. However, this paper only begins the examination of IMU's and there are most likely improvements to be made.

Report this publication

Statistics

Seen <100 times