The Effect of Context Switching, Focal Switching Distance, Binocular and Monocular Viewing, and Transient Focal Blur on Human Performance in Optical See-Through Augmented Reality
The Effect of Context Switching, Focal Switching Distance, Binocular and Monocular Viewing, and Transient Focal Blur on Human Performance in Optical See-Through Augmented Reality
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DOI：
10.1109/tvcg.2022.3150503
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发表时间：
2022-05-01
影响因子：
5.2
通讯作者：
Swan, J. Edward, II
中科院分区：
文献类型：
--
作者：
Arefin, Mohammed Safayet;Phillips, Nate;Swan, J. Edward, II
在光学透视增强现实（AR）中，信息通常分布在真实的上下文和虚拟上下文之间，并且通常出现在离用户不同的距离处。为了整合信息，用户必须反复切换上下文和改变焦距。如果用户的任务是在时间压力下进行的，他们可能会尝试在他们的眼睛仍然改变焦距的同时整合信息，这种现象我们称之为瞬时焦点模糊。此前，Gabbard，Mehra和Swan（2018）研究了这些问题，在单眼光学透视AR显示器上使用基于文本的视觉搜索任务。本文报告了一项实验，该实验在定制的AR Haploscope上部分复制和扩展了这项任务。本实验研究了上下文切换、焦点切换距离、双眼和单眼观看以及短暂焦点模糊对任务绩效和眼疲劳的影响。上下文切换增加了眼睛疲劳，但没有降低性能。增加焦点切换距离会增加眼睛疲劳并降低性能。单眼观看也增加了眼睛疲劳和降低性能。短暂的焦点模糊效果导致额外的性能下降，并且增加了关于AR用户界面设计问题的知识。
In optical see-through augmented reality (AR), information is often distributed between real and virtual contexts, and often appears at different distances from the user. To integrate information, users must repeatedly switch context and change focal distance. If the user's task is conducted under time pressure, they may attempt to integrate information while their eye is still changing focal distance, a phenomenon we term transient focal blur. Previously, Gabbard, Mehra, and Swan (2018) examined these issues, using a text-based visual search task on a one-eye optical see-through AR display. This paper reports an experiment that partially replicates and extends this task on a custom-built AR Haploscope. The experiment examined the effects of context switching, focal switching distance, binocular and monocular viewing, and transient focal blur on task performance and eye fatigue. Context switching increased eye fatigue but did not decrease performance. Increasing focal switching distance increased eye fatigue and decreased performance. Monocular viewing also increased eye fatigue and decreased performance. The transient focal blur effect resulted in additional performance decrements, and is an addition to knowledge about AR user interface design issues.