Material feeling control of virtual surface generated through tactile Gestalt

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K22869
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 61:Human informatics and related fields
• Research Institution: Nagoya University
• Principal Investigator: OHKA Masahiro 名古屋大学, 情報学研究科, 教授 (50233044)
• Project Period (FY): 2019-06-28 – 2021-03-31
• Keywords: 触覚 / Gestalt / 仮想表面 / 材質感制御 / バーチャルリアリティ / 情報統合化 / 理論構築

Outline of Final Research Achievements

In order to progress this study, first we investigate relationships between VHI intensity and some parameters such as phase difference and velocity ratio based on psychophysical experimental results which are performed by a presentation machine capable of changing two wires’ phage difference and velocity ratio. As the result of this study, we introduce new Gestalt factors such as translation factor and elasticity factor to formulate equations for tactile Gestalt. We prove that these equations can estimate not only the present results but also the previous results performed under different experimental conditions. Furthermore we investigate factors constituting the tactile dimension and activated areas in brain caused by VHI using another psychophysical experiments and NIRS experiments.

Free Research Field

人間情報学，ロボット工学

Academic Significance and Societal Importance of the Research Achievements

本研究では，新しいVRの開発に役立てるために触覚のGestalt理論の確立を目指し，心理物理実験とブレインマシンインタフェース技術を駆使してベルベット錯触とGestaltの関係を調査した．その結果，平行移動の要因と伸縮の要因によりベルベット錯触の生起の強度を予測できることを示し，定式化に成功した．また，因子分析により，ドットマトリクスディスプレイで生起されるベルベット錯触が二本鋼線で生起されるものと同等であることを示し，VRにおいて滑らかさの演出の制御を可能とする道を開いた．