Research on virtual reality interface to display sense of material using human perception mechanism

利用人类感知机制显示物感的虚拟现实界面研究

• 批准号: 13680478
• 负责人: FUJITA Kinya
• 金额: $ 2.56万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13680478/
• 关键词: virtual reality; haptic; virtual space; remote sharing; tactile; elastic object; 仮想現実感; 接触面積; 指

1. ObjectiveConventional haptic interface devices for virtual space interaction have limitations, for instance, those devices do not have performance to display the softness of virtual objects in passive touch motion. In this study, an innovative softness display device was developed based on the result of human motion analysis for softness perception. An experimental system to share the sense of softness over network has also implemented.2. Projects and resultsThe human pinch motion to perceive the softness of objects was analyzed experimentally. It was found that the peak contact area is constant in despite of the object softness, and that tendency can be explained by the constant imaginary displacement hypothesis.Based on the constant contact area tendency, a softness display device was developed, which controls the contact area between the finger and the device dynamically. The distinguish rate between four virtual objects were ninety-four percent and the cognitive rate of the four … More virtual objects compare to the original object was seventy-five percent. The feasibility of softness display by contact area control was demonstrated.An experimental softness-sharing system was constructed using two computers with fingertip force-display devices over UDP/IP network. The transmitted reaction force from the object was displayed by the force-display and the fingertip displacement was displayed by the CRT monitor without the restriction of fingers positions. It was demonstrated that the distinguish among 50, 100, 200, 400 N/m softness is possible.3. Concluding remarks and future workThe feasibility of softness display by contact area control, which was developed based on the experimentally found tendency of human pinch motion for softness perception, was demonstrated. The feasibility of remote sharing of softness sense using force-displays over network was also demonstrated. The further study for applying these results on remote cooperation such as telerehabilitation is required. Less

1.目的传统的虚拟空间交互触觉接口设备存在局限性，如不能在被动触摸运动中显示虚拟物体的柔软度等。本研究基于人体运动分析的结果，开发了一种新颖的柔度显示装置，用于柔度感知。并实现了一个在网络上共享柔软感的实验系统。项目与结果从实验上分析了人体感觉物体柔软度的捏合运动。研究发现，在物体柔软度不变的情况下，最大接触面积是恒定的，且这一趋势可以用恒定虚位移假设来解释，基于恒定接触面积的趋势，研制了一种柔软度显示装置，可以动态控制手指与装置之间的接触面积。四个虚拟物体的识别率分别为94%和四个…的认知率更多的虚拟物体与原始物体相比是75%。论证了接触区控制柔软度显示的可行性，通过UDP/IP网络，利用两台带有指尖测力显示装置的计算机构建了一个实验柔软度共享系统。力显示器显示物体传递的反作用力，CRT显示器显示指尖位移，不受手指位置的限制。证明了50、100、200、400N/m柔软度的区分是可能的。最后总结和下一步工作基于实验发现的人体收缩运动对柔软度感知的趋势，论证了通过接触区域控制柔软度显示的可行性。论证了通过网络力显远程共享柔软感的可行性。需要进一步研究如何将这些成果应用于远程合作，如远程康复。较少

项目成果

藤田欣也: "弾性物体の硬さ認知のためのつまみ動作における制御則"電子情報通信学会論文誌D-II. (掲載予定).

Kinya Fujita：“用于识别弹性物体硬度的捏动运动的控制定律”IEICE Transactions D-II（待出版）。

藤田欣也: "弾性物体の硬さ認知のためのつまみ動作における制御則"電子情報通信学会論文誌(D-II). J85-DII・11. 1733-1740 (2002)

Kinya Fujita：“用于识别弹性物体刚度的捏动运动的控制定律”电子信息通信工程师学会会刊（D-II）1733-1740（2002）。

Kinya Fujita, Hisayuki Ohmori: "A New Softness Display Interface by Dynamic Fingertip Contact Area Control"Proceedings of World Multiconference on Systemics, Cybernetics and Informatics. XI. 78-82 (2001)

Kinya Fujita、Hisayuki Ohmori：“动态指尖接触区域控制的新型柔软度显示界面”系统学、控制论和信息学世界多重会议论文集。

Toshiyuki Miyata and Kinya Fujita: "Passive sharing of grasping sense of elastic objects over network by reaction force and graphic display"Trans. Virtual Reality Soc. Japan. 8(1). 3-10 (2003)

Toshiyuki Miyata和Kinya Fujita：“通过反作用力和图形显示在网络上被动共享弹性物体的抓握感”Trans。

Kinya Fujita: "Control strategies in human pinch motion to perceive the hardness of an elastic object"Trans. IEICE (D-II). J85-DII(11). 1733-1740 (2002)

Kinya Fujita：“人体捏动运动中感知弹性物体硬度的控制策略”Trans。