利用时空调制触觉指针提高对空中触觉形状的感知

IF 1.9 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING ACM Transactions on Applied Perception Pub Date : 2023-07-29 DOI:10.1145/3611388
Lendy Mulot, Thomas Howard, C. Pacchierotti, M. Marchal
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引用次数: 0

摘要

超声波空中触觉(UMH)设备可以远程在未装备的用户皮肤上呈现振动触觉形状,例如绘制触觉图标或呈现虚拟物体形状。时空调制(STM)是最先进的UMH形状绘制方法,它为形状设计提供了很大的自由度,并为该技术产生了最强的刺激。然而,STM形状通常是模糊的,使形状识别变得复杂。动态触觉指针(DTP)作为一种克服这一问题的技术最近被引入。通过用调幅焦点跟踪轮廓,它们显著提高了STM的形状识别精度,但代价是大大降低了刺激强度。在此基础上,我们提出了时空调制触觉指针(STP),这是一种呈现更清晰、更锐利的UMH形状,同时产生强烈振动触觉的新方法。我们进行了两个人类参与者的实验,结果表明STP形状比DTP形状明显更强,而STM的形状识别精度显著提高,与DTP的形状识别精度相当。我们的工作对UMH的有效形状渲染具有启示意义,并为UMH中振动触觉形状感知的未来心理物理研究提供了见解。
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Improving the Perception of Mid-Air Tactile Shapes With Spatio-Temporally-Modulated Tactile Pointers
Ultrasound mid-air haptic (UMH) devices can remotely render vibrotactile shapes on the skin of unequipped users, e.g., to draw haptic icons or render virtual object shapes. Spatio-temporal modulation (STM), the state-of-the-art UMH shape rendering method, provides large freedom in shape design and produces the strongest possible stimuli for this technology. Yet, STM shapes are often reported to be blurry, complicating shape identification. Dynamic tactile pointers (DTP) were recently introduced as a technique to overcome this issue. By tracing a contour with an amplitude-modulated focal point, they significantly improve shape identification accuracy over STM, but at the cost of much lower stimulus intensity. Building upon this, we propose Spatio-temporally-modulated Tactile Pointers (STP), a novel method for rendering clearer and sharper UMH shapes while at the same time producing strong vibrotactile sensations. We ran two human participant experiments, which show that STP shapes are perceived as significantly stronger than DTP shapes, while shape identification accuracy is significantly improved over STM and on par with that obtained with DTP. Our work has implications for effective shape rendering with UMH, and provides insights which could inform future psychophysical investigation into vibrotactile shape perception in UMH.
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来源期刊
ACM Transactions on Applied Perception
ACM Transactions on Applied Perception 工程技术-计算机:软件工程
CiteScore
3.70
自引率
0.00%
发文量
22
审稿时长
12 months
期刊介绍: ACM Transactions on Applied Perception (TAP) aims to strengthen the synergy between computer science and psychology/perception by publishing top quality papers that help to unify research in these fields. The journal publishes inter-disciplinary research of significant and lasting value in any topic area that spans both Computer Science and Perceptual Psychology. All papers must incorporate both perceptual and computer science components.
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