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澳洲论文网:Explicit Task Representation based on Gestu

Explicit Task Representation based on Gesture InteractionChristian Müller-Tomfelde and Cécile Paris
CSIRO - Information and Communication Technologies CentreLocked Bag 17, North Ryde, NSW 1670, AustraliaChristian.Mueller-Tomfelde@csiro.au and Cecile.Paris@csiro.au
Abstract
This paper describes the role and the use of an explicittask representation in applications where humans interactin non-traditional computer environments using gestures.The focus lies on training and 澳洲论文网assistance applications,where the objective of the training includes implicit
knowledge, e.g., motor-skills. On the one hand, theseapplications require a clear and transparent description ofwhat has to be done during the interaction, while, on theother hand, they are highly interactive and multimodal.Therefore, the human computer interaction becomesmodelled from the top down as a collaboration in whicheach participant pursues their individual goal that isstipulated by a task. In a bottom up processing, gesturerecognition determines the actions of the user by applyingprocessing on the continuous data streams from theenvironment. The resulting gesture or action is interpretedas the user’s intention and becomes evaluated during thecollaboration, allowing the system to reason about how tobest provide guidance at this point. A vertical prototypebased on the combination of a haptic virtual environmentand a knowledge-based reasoning system is discussed andthe evolvement of the task-based collaboration becomesdemonstrated.1
Keywords: task model, collaboration, gesture interaction,gesture recognition, virtual environment.
1 Introduction
The user interaction in virtual environments follows aspatial paradigm, while in traditional computer desktopenvironments the notion of Windows, Icon, Menus andPointing interaction (WIMP) is prevailing. http://ukthesiss.com/Thesis_Writing/Computer_Science/Theinteraction in virtual environments provides an intuitiveaccess to simulated objects. Simulations have achievednowadays considerable realism or plausibility, and thefocus can be shifted towards more quality in the
interaction (Smith et al., 1999). On the one hand, researchhas been done to specify new software models andspecification languages to cope withnon- and post-WIMP user interfaces (Jacob, 1996 and Beaudouin-
with which traditional User Interface ManagementSystems (UIMS) are not designed to deal. On the other
Copyright © 2006, Australian Computer Society, Inc. Thispaper appeared at the NICTA-HCSNet Multimodal User
Interaction Workshop (MMUI2005), Sydney, Australia.Conferences in Research and Practice in InformationTechnology, Vol. 57. Fang Chen and Julien Epps, Eds.Reproduction for academic, not-for profit purposes permitted
provided this text is included.
hand, effort has been made to populate a virtualenvironment with additional information to enrich theenvironment. In an early work of Feiner et al. (1993) onaugmented reality systems, additional task-relevant



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