Physically accurate (authentic) reproduction of affective touch patterns on the forearm is limited by actuator technology. However, in most VR applications a direct comparison with actual touch is not possible. Here, the plausibility is only compared to the user's expectation. Focusing on the approach of plausible instead of authentic touch reproduction enables new rendering techniques, like the utilization of the phantom illusion to create the sensation of moving vibrations. Following this idea, a haptic armband array (4x2 vibrational actuators) was built to investigate the possibilities of recreating plausible affective touch patterns with vibration. The novel aspect of this work is the approach of touch reproduction with a parameterized rendering strategy, enabling the integration in VR. A first user study evaluates suitable parameter ranges for vibrational touch rendering. Duration of vibration and signal shape influence plausibility the most. A second user study found high plausibility ratings in a multimodal scenario and confirmed the expressiveness of the system. Rendering device and strategy are suitable for a various stroking patterns and applicable for emerging research on social affective touch reproduction.

中文翻译：

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基于幻觉的情感触摸模式的振动触觉渲染


前臂上情感触摸模式的物理精确（真实）再现受到执行器技术的限制。然而，在大多数 VR 应用中，无法与实际触摸进行直接比较。这里，合理性仅与用户的期望进行比较。专注于合理而非真实的触摸再现的方法可以实现新的渲染技术，例如利用幻觉来创造移动振动的感觉。遵循这个想法，构建了触觉臂带阵列（4x2 振动执行器），以研究通过振动重新创建合理的情感触摸模式的可能性。这项工作的新颖之处在于采用参数化渲染策略的触摸再现方法，从而实现了 VR 中的集成。第一项用户研究评估了振动触摸渲染的合适参数范围。振动持续时间和信号形状对合理性影响最大。第二项用户研究发现多模式场景中的可信度很高，并证实了系统的表达能力。渲染设备和策略适用于各种抚摸模式，适用于社交情感触摸再现的新兴研究。