Peripheral vision plays a significant role in human perception and orientation. However, its relevance for human-computer interaction, especially head-mounted displays, has not been fully explored yet. In the past, a few specialized appliances were developed to display visual cues in the periphery, each designed for a single specific use case only. A multi-purpose headset to exclusively augment peripheral vision did not exist yet. We introduce MoPeDT: Modular Peripheral Display Toolkit, a freely available, flexible, reconfigurable, and extendable headset to conduct peripheral vision research. MoPeDT can be built with a 3D printer and off-the-shelf components. It features multiple spatially configurable near-eye display modules and full 3D tracking inside and outside the lab. With our system, researchers and designers may easily develop and prototype novel peripheral vision interaction and visualization techniques. We demonstrate the versatility of our headset with several possible applications for spatial awareness, balance, interaction, feedback, and notifications. We conducted a small study to evaluate the usability of the system. We found that participants were largely not irritated by the peripheral cues, but the headset's comfort could be further improved. We also evaluated our system based on established heuristics for human-computer interaction toolkits to show how MoPeDT adapts to changing requirements, lowers the entry barrier for peripheral vision research, and facilitates expressive power in the combination of modular building blocks.

翻译：外周视觉在人类感知与定向中扮演着重要角色。然而，其在人机交互（尤其是头戴式显示器）领域的潜力尚未得到充分探索。过去虽已开发出几种专用设备用于显示外周视觉线索，但每种设备仅针对单一特定用例设计，尚不存在专门增强外周视觉的多用途头戴设备。我们提出MoPeDT：模块化外周显示工具包——一款可免费获取、灵活可重构且可扩展的头戴设备，专为外周视觉研究设计。MoPeDT可通过3D打印和现成组件构建，配备多个空间可配置的近眼显示模块，并支持实验室内外完整的3D追踪。利用该系统，研究人员和设计师可轻松开发并原型化新型外周视觉交互与可视化技术。我们通过空间感知、平衡、交互、反馈及通知等多种应用场景展示了该头戴设备的通用性。此外，我们开展了一项小型研究评估系统可用性，发现参与者基本未受外周线索干扰，但头戴设备舒适度有待提升。我们还基于人机交互工具包既定启发式评估标准对系统进行评价，结果表明MoPeDT能适应需求变化、降低外周视觉研究准入门槛，并通过模块化组件的组合增强表达力。