Group tele-immersion:enabling natural interactions between groups at distant sites.

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Description

We present techniques and a system for synthesizing views for video teleconferencing between small groups. In place of replicating one-to-one systems for each pair of users, we create a single unified display of the remote group. Instead of performing dense 3D scene computation, we use more cameras and trade-off storage and hardware for computation. While it is expensive to directly capture a scene from all possible viewpoints, we have observed that the participants viewpoints usually remain at a constant height (eye level) during video teleconferencing. Therefore, we can restrict the possible viewpoint to be within a virtual plane without sacrificing ... continued below

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32 p.

Creation Information

Yang, Christine L. (Sandia National Laboratories, Livermore, CA); Stewart, Corbin (Sandia National Laboratories, Livermore, CA) & Nashel, Andrew (University of North Carolina at Chapel Hill, Chapel Hill, NC) August 1, 2005.

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Description

We present techniques and a system for synthesizing views for video teleconferencing between small groups. In place of replicating one-to-one systems for each pair of users, we create a single unified display of the remote group. Instead of performing dense 3D scene computation, we use more cameras and trade-off storage and hardware for computation. While it is expensive to directly capture a scene from all possible viewpoints, we have observed that the participants viewpoints usually remain at a constant height (eye level) during video teleconferencing. Therefore, we can restrict the possible viewpoint to be within a virtual plane without sacrificing much of the realism, and in cloning so we significantly reduce the number of required cameras. Based on this observation, we have developed a technique that uses light-field style rendering to guarantee the quality of the synthesized views, using a linear array of cameras with a life-sized, projected display. Our full-duplex prototype system between Sandia National Laboratories, California and the University of North Carolina at Chapel Hill has been able to synthesize photo-realistic views at interactive rates, and has been used to video conference during regular meetings between the sites.

Physical Description

32 p.

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  • Report No.: SAND2005-5206
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/876307 | External Link
  • Office of Scientific & Technical Information Report Number: 876307
  • Archival Resource Key: ark:/67531/metadc873592

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  • August 1, 2005

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 28, 2016, 7:04 p.m.

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Yang, Christine L. (Sandia National Laboratories, Livermore, CA); Stewart, Corbin (Sandia National Laboratories, Livermore, CA) & Nashel, Andrew (University of North Carolina at Chapel Hill, Chapel Hill, NC). Group tele-immersion:enabling natural interactions between groups at distant sites., report, August 1, 2005; United States. (digital.library.unt.edu/ark:/67531/metadc873592/: accessed September 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.