Haptic Granular Synthesis: Targeting, Visualisation and Texturing
Andrew Crossan, John Williamson and Roderick Murray-Smith
In: International Symposium on Non-visual & Multimodal Visualization, London, IEEE Computer Soci, London(2004).
In this paper we describe a study that examines human performance
in a tilt control targeting task on a PDA. A three-degree of freedom accelerometer
attached to the base of the PDA allows users to navigate to the targets
by tilting their wrist in different directions. Post hoc analysis of performance
data has been used to classify the ease of targeting and variability of movement
in the different directions. The results show that there is an increase in variability
of motions upwards from the centre, compared to downwards motions. Also
the variability in the x axis component of the motion was greater than that in
the y axis. This information can be used to guide designers as to the ease of
various relative motions, and can be used to reshape the dynamics of the interaction
to make each direction equally easy to achieve.