Towards Efficient Visual Guidance in Limited Field-of-View Head-Mounted Displays
Towards Efficient Visual Guidance in Limited Field-of-View Head-Mounted Displays
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DOI：
10.1109/tvcg.2018.2868584
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发表时间：
2018-11-01
影响因子：
5.2
通讯作者：
Navab, Nassir
中科院分区：
文献类型：
--
作者：
Bork, Felix;Schnelzer, Christian;Navab, Nassir
在混合现实（MR）环境中理解、导航和执行面向目标的动作是一项具有挑战性的任务，并且需要关于场景中所有虚拟对象的位置的足够的信息传递。当前的头戴式显示器（HMD）具有有限的视场，其中可以显示增强对象。此外，复杂的MR环境可以包括可以分布在用户的扩展的周围空间中的大量对象。本文提出了两种新的技术，在基于HMD的MR视觉引导用户的注意力向视图外的对象：3D雷达和镜球。我们评估我们的方法对现有的技术在三个不同的对象收集的情况下，模拟现实世界的探索性和目标导向的视觉搜索任务。为了更好地理解不同的可视化如何引导用户的注意力，我们分析了所有技术的头部旋转数据，并引入了一种新的方法来评估和分类头部旋转轨迹。我们的研究结果提供了支持证据，证明视觉引导技术的类型会影响用户在MR中搜索虚拟对象的方式。
Understanding, navigating, and performing goal-oriented actions in Mixed Reality (MR) environments is a challenging task and requires adequate information conveyance about the location of all virtual objects in a scene. Current Head-Mounted Displays (HMDs) have a limited field-of-view where augmented objects may be displayed. Furthermore, complex MR environments may be comprised of a large number of objects which can be distributed in the extended surrounding space of the user. This paper presents two novel techniques for visually guiding the attention of users towards out-of-view objects in HMD-based MR: the 3D Radar and the Mirror Ball. We evaluate our approaches against existing techniques during three different object collection scenarios, which simulate real-world exploratory and goal-oriented visual search tasks. To better understand how the different visualizations guide the attention of users, we analyzed the head rotation data for all techniques and introduce a novel method to evaluate and classify head rotation trajectories. Our findings provide supporting evidence that the type of visual guidance technique impacts the way users search for virtual objects in MR.