A Dynamic QoS Adaptation Mechanism for Networked Virtual Reality

In this paper, we propose a dynamic QoS adaptation mechanism for the networked virtual reality (VR) system to improve responsiveness to the users and introduce a live video into an networked VR system. To keep presentation quality as much as possible from point of view of user’s perception when network and local system resources are going to starve, we introduce the notion of an importance of presence (IoP) of objects. In case of the resource starvation, our VR system reduces QoSs of both Computer Graphic (CG) objects and Video objects based on IoP. That is, the quality of the object whose IoP is the lowest in the virtual space is reduced.

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