TactDeform：基于手指垫变形的时空触觉反馈用于虚拟几何探索
TactDeform: Finger Pad Deformation Inspired Spatial Tactile Feedback for Virtual Geometry Exploration
AI总结：
TactDeform通过模拟手指垫变形实现高精度时空触觉反馈，提升虚拟环境中的几何探索体验。
摘要：
空间触觉反馈可以增强虚拟现实应用中几何探索的真实感。当前的触觉反馈方法常面临在渲染不同3D几何体时所需的时空分辨率挑战。受探索3D物体和表面时手指垫自然变形的启发，我们提出TactDeform，一种参数化方法，利用可穿戴的电触觉接口渲染时空触觉模式。系统根据交互上下文（接近、接触和滑动）和几何上下文（几何特征和纹理）动态渲染电触觉模式，模拟现实世界触摸探索中发生的变形。用户研究（N=24）的结果表明，所提出的方法在纹理辨别和几何特征识别方面优于基线方法。受自由3D几何探索阶段结果的启发，我们提供了可以指导未来触觉接口设计的见解。
英文摘要：
Spatial tactile feedback can enhance the realism of geometry exploration in virtual reality applications. Current vibrotactile approaches often face challenges with the spatial and temporal resolution needed to render different 3D geometries. Inspired by the natural deformation of finger pads when exploring 3D objects and surfaces, we propose TactDeform, a parametric approach to render spatio-temporal tactile patterns using a finger-worn electro-tactile interface. The system dynamically renders electro-tactile patterns based on both interaction contexts (approaching, contact, and sliding) and geometric contexts (geometric features and textures), emulating deformations that occur during real-world touch exploration. Results from a user study \rr{(N=24)} show that the proposed approach enabled high texture discrimination and geometric feature identification compared to a baseline. Informed by results from a free 3D-geometry exploration phase, we provide insights that can inform future tactile interface designs.
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