Egocentric Distance Perception Control for Direct Manipulation Interaction on HMD Platform

At present, the simulation technique of sensory stimulation of virtual reality technology has limitations to reproduce imperfectly the sensory feedback learned while human grows. Therefore, the inconsistency of the sensory feedback is obstructing the popularization of the virtual reality service. This study deals with visual distance perception or sensory inconsistency experienced by users when using HMD. In addition, the feature of interaction that we study in this study is to restore objects in real space to virtual space and to manipulate the connected object in real time by hand. We carried out near-body-space interaction experiments to analyze the performance characteristics of subjects with various environments consisting of HMD-oriented hardware and a software focused on the 3D game engine, which is representing the VR market. We are investigating algorithms that can minimize the error of matching task in a virtual environment. We found the world scale parameter in terms of geometric field of view as a significant control factor. We report the results of applying the current research results to an indoor VR theme park application. The user can experience the visual feedback of the precisely associated virtual space while manipulating the physical object and receiving simultaneously the haptic feedback that interacts with other objects in the real space.