We revealed the optimal feedback parameters of visual, auditory, and tactile modalities in the operation of aerial display and determined that aerial display could be further improved for use of as a contactless human interface by multimodal feedback combining these parameters. We proposed applying a vibration motor to the sole of the foot instead of fingertips to provide vibration as tactile feedback to operate the aerial display. Sensory evaluation tests were carried out to evaluate the optimal feedback parameters for operating the aerial display in three senses: visual (image change); auditory (touch tone); and tactile (vibration), and to evaluate the effect on the operation with a combination of these parameters. We analyzed the variance of the experimental data using Scheffé’s method for obtaining significance levels of paired comparisons. We found that the combination of two or three modalities rather than only a single modality makes the aerial display easy to operate.

我们揭示了空中显示操作中视觉、听觉和触觉方式的最佳反馈参数，并确定通过结合这些参数的多模态反馈可以进一步改进空中显示，以用作非接触式人机界面。我们建议将振动电机应用到脚底而不是指尖，以提供振动作为触觉反馈来操作空中显示器。进行感官评估测试，从三个感官评估操作航拍显示器的最佳反馈参数：视觉（图像变化）；听觉（按键音）；和触觉（振动），并评估这些参数的组合对操作的影响。我们使用 Scheffé 方法分析了实验数据的方差，以获得配对比较的显着性水平。我们发现，两种或三种模式的组合而不是单一模式使得空中展示易于操作。