Modelling three-dimensional trajectories by using Bezier curves with application to hand motion

J J Faraway, M P Reed, J Wang

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

A modelling approach for three-dimensional trajectories with particular application to hand reaching motions is described. Bezier curves are defined by control points which have a convenient geometrical interpretation. A fitting method for the control points to trajectory data is described. These fitted control points are then linked to covariates of interest by using a regression model. This allows the prediction of new trajectories and the ability to model the variability in trajectories. The methodology is illustrated with an application to hand trajectory modelling for ergonomics. Motion capture was used to collect a total of about 2000 hand trajectories performed by 20 subjects to a variety of targets. A simple model with strong predictive performance and interpretablility is developed. The use of hand trajectory models in the digital human models for virtual manufacturing applications is discussed.
Original languageEnglish
Pages (from-to)571-585
Number of pages15
JournalJournal of the Royal Statistical Society Series C-Applied Statistics
Volume56
Publication statusPublished - 2007

Fingerprint Dive into the research topics of 'Modelling three-dimensional trajectories by using Bezier curves with application to hand motion'. Together they form a unique fingerprint.

Cite this