Data Streaming in Telepresence Environments
IEEE Transactions on Visualization and Computer Graphics
A flexible framework for distributed three-dimensional models in telematic applications
RA '07 Proceedings of the 13th IASTED International Conference on Robotics and Applications
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SMC'09 Proceedings of the 2009 IEEE international conference on Systems, Man and Cybernetics
Multi-stream 3D video distribution over peer-to-peer networks
Image Communication
Adapting standard video codecs for depth streaming
EGVE - JVRC'11 Proceedings of the 17th Eurographics conference on Virtual Environments & Third Joint Virtual Reality
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Free-viewpoint video is a promising technology fornext-generation virtual and augmented reality applications.Our goal is to enhance collaborative VR applicationswith 3D video-conferencing features. In this paper,we propose a 3D video streaming technique which can bedeployed in telepresence environments. The streamingcharacteristics of real-time 3D video sequences are investigatedunder various system and networking conditions.We introduce several encoding techniques and analyzetheir behavior with respect to resolution, bandwidth andinter-frame jitter. Our 3D video pipeline uses point samplesas basic primitives and is fully integrated with a communicationframework handling acknowledgmentinformation for reliable network transmissions and applicationcontrol data. The 3D video reconstruction processdynamically adapts to processing and networking bottlenecks.Our results show that a reliable transmission of ourpixel-based differential prediction encoding leads to thebest performance in terms of bandwidth, but is also quitesensitive to packet losses. A redundantly encoded streamachieves better results in presence of burst losses andseamlessly adapts to varying network throughput.