Resolutions and Network Latencies Concerning a Voxel Telepresence Experience

• 作者: Holger Regenbrecht Noel J. W. Park
• 来源期刊: 软件工程与应用(英文)
• 学科: 医学
• 关键词: Copresence EMBODIMENT MIXED REALITY TELEPRESENCE Voxels
• 年，卷（期）: 2019,（5）
• 页码范围: 171-197
• 页数: 27页
• 分类号: R73

摘要

Recent advancements in computing research and technology will allow future immersive virtual reality systems to be voxel-based, i.e. entirely based on gap-less, spatial representations of volumetric pixels. The current popularity of pixel-based videoconferencing systems could turn into true telepresence experiences that are voxel-based. Richer, non-verbal communication will be possible thanks to the three-dimensional nature of such systems. An effective telepresence experience is based on the users’ sense of copresence with others in the virtual environment and on a sense of embodiment. We investigate two main quality of service factors, namely voxel size and network latency, to identify acceptable threshold values for maintaining the copresence and embodiment experience. We present a working prototype implementation of a voxel-based telepresence system and can show that even a coarse 64 mm voxel size and an overall round-trip latency of 542 ms are sufficient to maintain copresence and embodiment experiences. We provide threshold values for noticeable, disruptive, and unbearable latencies that can serve as guidelines for future voxel and other telepresence systems.