Mutual Space Generation with Redirected Walking for Asymmetric Remote Collaboration

Abstract

To enable eXtended Reality (XR) remote collaboration with co-presence, it is necessary to overcome the spatial difference between remote spaces and create a single mutual space where users can utilize their physical objects. Previous studies mainly consider se-mantic information and walkable area matching rate to create mutual space in a 1:1 scale, making it challenging to precisely match edge information between physical and virtual objects. In this work, we propose an edge-aware mutual space creation method by adjusting the VR client's space with Redirected Walking (RDW) technology. In our previous works, we introduced Relative Translation Gains (RTGs), a length-based RDW, and estimated the cognitive thresholds range of RTGs depending on the configuration of virtual space (size, object existence, spatial layout) to make an effect of rescaling VR clients' spaces. In addition, we introduced an RTG-based mutual space generation method that allows VR and AR users to interact with objects in physical space while they collaborate remotely. We will develop an enhanced mutual space generation method and con-duct a user study, and our findings can be used to generate a mutual space for asymmetric remote collaboration.