Shifty: A Weight-Shifting Dynamic Passive Haptic Proxy to Enhance Object Perception in Virtual Reality
Shifty: A Weight-Shifting Dynamic Passive Haptic Proxy to Enhance Object Perception in Virtual Reality
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DOI：
10.1109/tvcg.2017.2656978
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发表时间：
2017-04
影响因子：
5.2
通讯作者：
André Zenner;A. Krüger
中科院分区：
文献类型：
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作者：
André Zenner;A. Krüger
我们定义的概念，动态被动触觉反馈（DPHF）的虚拟现实，通过引入重量转移的物理DPHF代理对象Shifty。该概念将从主动触觉已知的致动器和从被动触觉已知的物理代理相结合，以构造自动适应其被动触觉反馈的代理。我们描述了我们的不接地的重量转移DPHF代理Shifty和我们的原型的实现背后的概念。然后，我们研究如何Shifty可以，通过自动改变其内部的重量分布，增强用户的感知与两个实验中的虚拟对象进行交互。在第一个实验中，我们表明，Shifty可以增强虚拟物体形状变化的感知，特别是长度和厚度。在这里，Shifty被证明是增加用户的乐趣和感知的现实主义显着相比，相当于被动触觉代理。在第二个实验中，Shifty用于拾取不同虚拟重量的虚拟对象。结果表明，Shifty通过将其动觉反馈适应于拾取的虚拟对象，增强了对重量的感知，从而增强了感知的真实感。在同一个实验中，我们还表明，特定的组合的触觉，视觉和听觉反馈，在拿起互动有助于补偿视觉触觉不匹配的转移过程中感知。
We define the concept of Dynamic Passive Haptic Feedback (DPHF) for virtual reality by introducing the weight-shifting physical DPHF proxy object Shifty. This concept combines actuators known from active haptics and physical proxies known from passive haptics to construct proxies that automatically adapt their passive haptic feedback. We describe the concept behind our ungrounded weight-shifting DPHF proxy Shifty and the implementation of our prototype. We then investigate how Shifty can, by automatically changing its internal weight distribution, enhance the user's perception of virtual objects interacted with in two experiments. In a first experiment, we show that Shifty can enhance the perception of virtual objects changing in shape, especially in length and thickness. Here, Shifty was shown to increase the user's fun and perceived realism significantly, compared to an equivalent passive haptic proxy. In a second experiment, Shifty is used to pick up virtual objects of different virtual weights. The results show that Shifty enhances the perception of weight and thus the perceived realism by adapting its kinesthetic feedback to the picked-up virtual object. In the same experiment, we additionally show that specific combinations of haptic, visual and auditory feedback during the pick-up interaction help to compensate for visual-haptic mismatch perceived during the shifting process.