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

1.传统的用于虚拟空间交互的触觉接口设备具有局限性，例如，这些设备不具有在被动触摸运动中显示虚拟对象的柔软度的性能。在这项研究中，一个创新的柔软度显示设备开发的基础上，对柔软度感知的人体运动分析的结果。并实现了一个软感知网络共享的实验系统.实验分析了人体捏运动对物体柔软度的感知。研究发现，尽管物体柔软，但接触面积的峰值是恒定的，这种趋势可以用虚位移恒定假设来解释，基于接触面积恒定的趋势，开发了一种动态控制手指与设备接触面积的柔软度显示设备。对四种虚拟物体的识别率为94%， ...更多信息 虚拟物体与原始物体的对比是75%。论证了通过接触面积控制实现柔度显示的可行性，并通过UDP/IP网络构建了一个实验性的柔度共享系统。力显示器显示物体传来的反作用力，CRT显示器显示指尖位移，不受手指位置的限制。结果表明，50、100、200、400 N/m的软度是可以区分的.结论和未来的工作通过接触面积控制，这是开发的基础上，实验发现的趋势，人类捏运动的柔软度感知的柔软度显示的可行性，证明。论证了通过网络实现力觉远程共享的可行性。这些研究成果在远程康复等远程合作中的应用有待进一步研究。少

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