User Support of Physical Labor using Pseudo-haptics in a Mixed Reality Space(<Special Issue>Haptic Contents)

Abstract

This paper proposes a method to present various weight in a mixed reality space without the use of mechanical devices. This is realized by changing the visual movement of the users' hand and the handled object, to evoke the pseudo-haptic effect. In order to continuously evoke the pseudo-haptic effect in the mixed reality space without the user losing ownership, or noticing the untrue position of the presented hand, we implemented a method to compensate for the difference between the position of the presented hand and the actual hand. Furthermore, we implemented the proposed method to control fatigue. By doing so, we managed to increase the number of repetition of an object lifting task the user can perform by 9.0%. This research shows that pseudo-haptic effects can be evoked in interactions that occur in the mixed reality space, and that pseudo-haptics affects not only the users' perception of weight, but also the physical performance in lifting the target object.