Algorithms for clustering data
Algorithms for clustering data
Empirical methods for evaluating video-mediated collaborative work
Empirical methods for evaluating video-mediated collaborative work
MP3: The Definitive Guide
Video Acceptability and Frame Rate
IEEE MultiMedia
A Mechanism for TCP-Friendly Transport-Level Protocol Coordination
ATEC '02 Proceedings of the General Track of the annual conference on USENIX Annual Technical Conference
Level of Detail for 3D Graphics
Level of Detail for 3D Graphics
Constructing Virtual Worlds Using Dense Stereo
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
Understanding performance in coliseum, an immersive videoconferencing system
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Towards Multi-Site Collaboration in 3D Tele-Immersive Environments
ICDCS '08 Proceedings of the 2008 The 28th International Conference on Distributed Computing Systems
A methodology for remote virtual interaction in teleimmersive environments
MMSys '10 Proceedings of the first annual ACM SIGMM conference on Multimedia systems
Evaluating the usability of an auto-stereoscopic display
HCI'07 Proceedings of the 12th international conference on Human-computer interaction: interaction platforms and techniques
Feedback Systems: An Introduction for Scientists and Engineers
Feedback Systems: An Introduction for Scientists and Engineers
Color-plus-depth level-of-detail in 3D tele-immersive video: a psychophysical approach
MM '11 Proceedings of the 19th ACM international conference on Multimedia
Human perception of jitter and media synchronization
IEEE Journal on Selected Areas in Communications
High-Quality Visualization for Geographically Distributed 3-D Teleimmersive Applications
IEEE Transactions on Multimedia
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This article presents a psychophysical study that measures the perceptual thresholds of a new factor called Color-plus-Depth Level-of-Details (CZLoD) peculiar to polygon-based 3D tele-immersive video. The results demonstrate the existence of Just Noticeable Degradation and Just Unacceptable Degradation thresholds on the factor. In light of the results, we design and implement a real-time perception-based quality adaptor for 3D tele-immersive video. Our experimental results show that the adaptation scheme can reduce resource usage (e.g., CPU cycles) while considerably enhancing the overall perceived visual quality. Our analysis confirms the potential temporal and spatial performance benefits achievable with CZLoD adaptation.