Augmented Reality (AR) provides a safe and low-cost option for hazardous safety training that allows for the visualization of aspects that may be invisible, such as radiation. Effectively visually communicating such threats in the environment around the user is not straightforward. This work describes visually encoding radiation using the spatial awareness mesh of an AR Head Mounted Display. We leverage the AR device's GPUs to develop a real time solution that accumulates multiple dynamic sources and uses stencils to prevent an environment being over saturated with a visualization, as well as supporting the encoding of direction explicitly in the visualization. We perform a user study (25 participants) of different visualizations and obtain user feedback. Results show that there are complex interactions and while no visual representation was statistically superior or inferior, user opinions vary widely. We also discuss the evaluation approaches and provide recommendations.

翻译：增强现实（AR）为危险安全培训提供了安全且低成本的选择，能够可视化辐射等不可见因素。然而，在用户周围环境中有效传达此类威胁并非易事。本研究描述了利用AR头戴显示设备空间感知网格对辐射进行视觉编码的方法。我们借助AR设备的GPU开发了实时解决方案，该方案可累积多个动态辐射源，并利用模板防止环境被过度饱和的可视化所覆盖，同时支持在可视化中明确编码方向。我们针对不同可视化方案开展了用户研究（25名参与者），并收集了用户反馈。结果表明，存在复杂的交互效应，虽然没有任何一种可视化表现在统计上具有显著优劣之分，但用户意见差异较大。我们还讨论了评估方法并给出了建议。