Abstract
Designing usable and effective 3D User Interfaces and 3D Interaction Techniques is very challenging for Virtual Reality system developers and human factors specialists. Indeed, time consuming empirical evaluation is necessary to have an idea about the goodness of the 3D User Interface (3DUI) and the 3D Interaction Technique (3DIT) at the end of their development lifecycle. This may induce a huge loss of time if the result appears not to be satisfying in the end. Moreover, 3DUI evaluation is much more complex than 2D User Interfaces evaluation which is due to heterogeneous Virtual Reality (VR) devices and 3DIT. The aim of this work is to provide a framework allowing developers and experimenters to quickly evaluate 3DUIs and 3DITs during the design and the development lifecycle. The proposed framework is divided into two tools. The first one enables to create an evaluation protocol based on a knowledge database using two data mining algorithms, the "C4.5" to avoid from impossible combinations between devices and indicators and the "Spv Assoc Tree" to build a decision tree between indicators and factors. The second tool of the framework is an Evaluation Virtual Environment (EVE) to perform the evaluation according the protocol created with the first tool.
Highlights
As the technology of display and graphics systems has developed, Virtual Environments (VEs) applications have come into common use outside the research laboratory [1]
We suggest using data mining algorithms to generalize the logical implications over successive experiments to refine the design of tasks scenarios
- to offer design and trace facilities; - to bring fast design of an evaluation by assisted selection of useful metrics and factors; - to draw comparisons between the tested technique and others techniques using developed Virtual Environment and 3D User Interface (3DUI); - to perform statistical analysis; - to recursively enrich a Knowledge Database that can be used for the future experiments
Summary
As the technology of display and graphics systems has developed, Virtual Environments (VEs) applications have come into common use outside the research laboratory [1]. Until now, the only choice has been to validate 3DUIs and 3DITs by ergonomics experts at the end of their development lifecycle. This validating phase takes a long time and if it appears at the end that the result is poor, the validation feedback comes too late. For all these reasons we propose in this paper a framework called 3DUI-EF (3D User Interface Evaluation Framework).
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