Testbed Evaluation of Virtual Environment Interaction Techniques

  • Bowman D
  • Johnson D
  • Hodges L
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Abstract

As immersive virtual environment (VE) applications become more complex, it is clear that we need a firm understanding of the principles of VE interaction. In par-ticular, designers need guidance in choosing three-dimensional interaction tech-niques. In this paper, we present a systematic approach, testbed evaluation, for the assessment of interaction techniques for VEs. Testbed evaluation uses formal frame-works and formal experiments with multiple independent and dependent variables to obtain a wide range of performance data for VE interaction techniques. We present two testbed experiments, covering techniques for the common VE tasks of travel and object selection/manipulation. The results of these experiments allow us to form general guidelines for VE interaction and to provide an empirical basis for choosing interaction techniques in VE applications. Evaluation of a real-world VE system based on the testbed results indicates that this approach can produce sub-stantial improvements in usability.

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Authors

  • Doug A Bowman

  • Donald B Johnson

  • Larry F Hodges

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