CUED Publications database

A procedure for automatically estimating model parameters in optical motion capture

Ringer, M and Lasenby, J (2004) A procedure for automatically estimating model parameters in optical motion capture. Image and Vision Computing, 22. pp. 843-850. ISSN 0262-8856

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Abstract

Model-based optical motion capture systems require knowledge of the position of the markers relative to the underlying skeleton, the lengths of the skeleton's limbs, and which limb each marker is attached to. These model parameters are typically assumed and entered into the system manually, although techniques exist for calculating some of them, such as the position of the markers relative to the skeleton's joints. We present a fully automatic procedure for determining these model parameters. It tracks the 2D positions of the markers on the cameras' image planes and determines which markers lie on each limb before calculating the position of the underlying skeleton. The only assumption is that the skeleton consists of rigid limbs connected with ball joints. The proposed system is demonstrated on a number of real data examples and is shown to calculate good estimates of the model parameters in each. © 2004 Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Computed tomography Optical motion capture Training sequence
Subjects: UNSPECIFIED
Divisions: Div F > Signal Processing and Communications
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:14
Last Modified: 27 Nov 2014 19:21
DOI: 10.1016/j.imavis.2004.02.011