Scene Synchronization for Real-Time Interaction in Distributed Mixed Reality and Virtual Reality Environments
This addresses the challenge of real-time interaction and presence in collaborative MR/VR systems, though it appears incremental as it builds on existing synchronization methods.
The authors tackled the problem of maintaining a consistent shared state in distributed Mixed Reality and Virtual Reality environments despite network latency and jitter, proposing an adaptive synchronization algorithm that achieves consistency at multiple remote sites for low update frequencies.
Advances in computer networks and rendering systems facilitate the creation of distributed collaborative environments in which the distribution of information at remote locations allows efficient communication. One of the challenges in networked virtual environments is maintaining a consistent view of the shared state in the presence of inevitable network latency and jitter. A consistent view in a shared scene may significantly increase the sense of presence among participants and facilitate their interactivity. The dynamic shared state is directly affected by the frequency of actions applied on the objects in the scene. Mixed Reality (MR) and Virtual Reality (VR) environments contain several types of action producers including human users, a wide range of electronic motion sensors, and haptic devices. In this paper, the authors propose a novel criterion for categorization of distributed MR/VR systems and present an adaptive synchronization algorithm for distributed MR/VR collaborative environments. In spite of significant network latency, results show that for low levels of update frequencies the dynamic shared state can be maintained consistent at multiple remotely located sites.