An Effective QoS Control Scheme for 3D Virtual Environments Based on User's Perception

Takayuki KURODA  Takuo SUGANUMA  Norio SHIRATORI  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E91-D   No.6   pp.1604-1612
Publication Date: 2008/06/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e91-d.6.1604
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Section on Human Communication III)
Category: Media Communication
Keyword: 
virtual environment,  QoS,  3D,  perceptual quality,  multiagent system,  flexible system,  

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Summary: 
In this paper, we present a new three-dimensional (3D) virtual environment (3DVE) system named "QuViE/P", which can enhance quality of service (QoS), that users actually feel, as good as possible when resources of computers and networks are limited. To realize this, we focus on characteristics of user's perceptual quality evaluation on 3D objects. We propose an effective QoS control scheme for QuViE/P by introducing relationships between system's internal quality parameters and user's perceptual quality parameters. This scheme can appropriately maintain the QoS of the 3DVE system and it is expected to improve convenience when using 3DVE system where resources are insufficient. We designed and implemented a prototype of QuViE/P using a multiagent framework. The experiment results show that even when the computer resource is reduced to 20% of the required amount, the proposed scheme can maintain the quality of important objects to a certain level.