Reach-Bounded, Non-Linear Input Amplification for More Comfortable Virtual Reality
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Date
2020-04-30
Authors
Wentzel, Johann
Journal Title
Journal ISSN
Volume Title
Publisher
University of Waterloo
Abstract
Input amplification enables easier movement in virtual reality (VR) for users with mobility issues or in confined spaces. However, current techniques either do not focus on maintaining feelings of body ownership, or are not applicable to general VR tasks. We investigate a general purpose non-linear transfer function that keeps the user's reach within reasonable bounds to maintain body ownership. The technique amplifies smaller movements from a user-definable neutral point into the expected larger movements using a configurable Hermite curve. Two experiments evaluate the approach. The first establishes that the technique has comparable performance to the state-of-the-art, increasing physical comfort while maintaining task performance and body ownership. The second explores the characteristics of the technique over a wide range of amplification levels. Using the combined results, design and implementation recommendations are provided with potential applications to related VR transfer functions.
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Keywords
virtual reality, input re-mapping, ergonomics, interaction techniques