Co-presence and co-working in distributed collaborative virtual environments

ABSTRACT

Collaborative virtual environments (CVEs) allow a number of users to share a common virtual space, where they may interact with one another and the environment. Immersive Telepresence involves the use of Video and Audio communication in projection-based CVEs, to support collaboration over distance as if face-to-face. Such approaches include the Office of the Future [29], the TELEPORT system [15] and other tele-presence [9] and spatially oriented video conferencing [5,6,7]. However, very little research has been carried out on what affects face-to-face communication when mediated via projection-based systems.In this paper, we explore how the use of video/audio, input device representations and other disturbance factors typical of projection-based virtual environments affect co-presence, co-working and co-knowledge in distributed CVEs. We present results from co-presence and co-working evaluation sessions of about 60 users of various profiles. An extensive statistical, group and variation group analysis of the results is carried out. The findings and the resulting design guidelines are presented in this paper in respect to the above factors.

REFERENCES

• 1: Clarence A. Ellis , Simon J. Gibbs , Gail Rein, Groupware: some issues and experiences, Communications of the ACM, v.34 n.1, p.39-58, Jan. 1991 [doi>10.1145/99977.99987]
• 2: S. Benford, J. Bowers, L.E. Fahl'en, J. Mariani, and T. Rodden. Supporting co-operative work in virtual environments. The Computer Journal, 37(8), 1994.
• 3: Steve Benford , Chris Brown , Gail Reynard , Chris Greenhalgh, Shared spaces: transportation, artificiality, and spatiality, Proceedings of the 1996 ACM conference on Computer supported cooperative work, p.77-86, November 16-20, 1996, Boston, Massachusetts, United States [doi>10.1145/240080.240196]
• 4: Sara A. Bly , Steve R. Harrison , Susan Irwin, Media spaces: bringing people together in a video, audio, and computing environment, Communications of the ACM, v.36 n.1, p.28-46, Jan. 1993 [doi>10.1145/151233.151235]
• 5: Y. Ichikawa, K. Okada, G. Jeong, S. Tanaka, and Y. Matushita. Majic videoconferencing system: Experiments, evaluation and improvement. In Proceedings of ECSCW95, 1995.
• 6: Hiroshi Ishii , Minoru Kobayashi , Jonathan Grudin, Integration of inter-personal space and shared workspace: ClearBoard design and experiments, Proceedings of the 1992 ACM conference on Computer-supported cooperative work, p.33-42, November 01-04, 1992, Toronto, Ontario, Canada [doi>10.1145/143457.143459]
• 7: Abigail Sellen , Bill Buxton , John Arnott, Using spatial cues to improve videoconferencing, Proceedings of the SIGCHI conference on Human factors in computing systems, p.651-652, May 03-07, 1992, Monterey, California, United States [doi>10.1145/142750.143070]
• 8: Haruo Takemura , Fumio Kishino, Cooperative work environment using virtual workspace, Proceedings of the 1992 ACM conference on Computer-supported cooperative work, p.226-232, November 01-04, 1992, Toronto, Ontario, Canada [doi>10.1145/143457.269747]
• 9: H. Kuzuoka, G. Ishimoda, and T. Nishimura. Can the gesturecam be a surrogate? In Proceedings of ECSCW95, 1995.
• 10: W. Broll, Interacting in distributed collaborative virtual environments, Proceedings of the Virtual Reality Annual International Symposium (VRAIS'95), p.148, March 11-15, 1995
• 11: Emmanuel Frécon , Anneli Avatare Nöu, Building distributed virtual environments to support collaborative work, Proceedings of the ACM symposium on Virtual reality software and technology, p.105-113, November 02-05, 1998, Taipei, Taiwan [doi>10.1145/293701.293715]
• 12: D. Margery, B. Arnaldi, and N. Plouzeau. A General Framework for Cooperative Manipulation in Virtual Environments. In Proc. of the Eurographics Workshop in Vienna, Austria, May 31 - June1, 1999.
• 13: M. Slater and A. Steed. A virtual presence counter. Presence: Teleoperators and Virtual Environments 9.5, 2000.
• 14: Anthony Steed , Mel Slater , Amela Sadagic , Adrian Bullock , Jolanda Tromp, Leadership and Collaboration in Shared Virtual Environments, Proceedings of the IEEE Virtual Reality, p.112, March 13-17, 1999
• 15: Christian J. Breiteneder , Simon J. Gibbs , Costas Arapis, TELEPORT—an augmented reality teleconferencing environment, Proceedings of the Eurographics workshop on Virtual environments and scientific visualization '96, p.41-49, January 1996, Monte Carlo, Monaco
• 16: C. M. Curry. Supporting collaborative awareness in tele-immersion. Virginia Polytechnic Institute and State University, 1999.
• 17: A. Fuhrmann, G. Hesina, F. Faure, and M. Gervautz. Occlusion in Collaborative Augmented Environments. In Proc. of the Eurographics Workshop in Vienna, Austria, May 31 - June1, 1999.
• 18: Maria Roussos , Andrew E. Johnson , Jason Leigh , Christina A. Vasilakis , Craig R. Barnes , Thomas G. Moher, NICE: combining constructionism, narrative and collaboration in a virtual learning environment, ACM SIGGRAPH Computer Graphics, v.31 n.3, p.62-63, August 1997 [doi>10.1145/262171.262264]
• 19: M. Usoh, E. Catena, S. Arman, and M. Slater. Presence questionnaires in reality. Presence: Teleoperators and Virtual Environments, in press, 2000.
• 20: B.G. Witmer. and M.J. Singer. Measuring immersion in virtual environments. (Tech. Report 1014). Alexandria, VA: U.S. Army Research Institute for the Behavioral and Social Sciences, 1994.
• 21: Deborah Hix , H. Rex Hartson, Developing user interfaces: ensuring usability through product & process, John Wiley & Sons, Inc., New York, NY, 1993
• 22: Deborah Hix , J. Edward Swan, II , Joseph L. Gabbard , Mike McGee , Jim Durbin , Tony King, User-Centered Design and Evaluation of a Real-Time Battlefield Visualization Virtual Environment, Proceedings of the IEEE Virtual Reality, p.96, March 13-17, 1999
• 23: J. Nielson. Usability Engineering. Academic Press, 1993.
• 24: G. Goebbels, V. Lalioti, and M. Göbel. On collaboration in distributed virtual environments. In The Journal of Three Dimensional Images, Japan, 14(4):42-47, 2000.
• 25: G. Goebbels, V. Lalioti, and T. Mack. Guided design and evaluation of distributed, collaborative 3D interaction in projection based virtual environments. In Proceedings of HCII 2001 - 9th International Conference on Human-Computer Interaction, New Orleans Aug. 2001.
• 26: Wolfgang Krueger , Bernd Froehlich, The Responsive Workbench, IEEE Computer Graphics and Applications, v.14 n.3, p.12-15, May 1994 [doi>10.1109/38.279036]
• 27: Wolfgang Krueger , Bernd Froehlich, The Responsive Workbench, IEEE Computer Graphics and Applications, v.14 n.3, p.12-15, May 1994 [doi>10.1109/38.279036]
• 28: Henrik Tramberend, Avocado: A Distributed Virtual Reality Framework, Proceedings of the IEEE Virtual Reality, p.14, March 13-17, 1999
• 29: Ramesh Raskar , Greg Welch , Matt Cutts , Adam Lake , Lev Stesin , Henry Fuchs, The office of the future: a unified approach to image-based modeling and spatially immersive displays, Proceedings of the 25th annual conference on Computer graphics and interactive techniques, p.179-188, July 1998 [doi>10.1145/280814.280861]

INDEX TERMS

Primary Classification:
  I. Computing Methodologies
  I.3 COMPUTER GRAPHICS
      I.3.7 Three-Dimensional Graphics and Realism
          Subjects: Virtual reality

Additional Classification:
  H. Information Systems
  H.5 INFORMATION INTERFACES AND PRESENTATION (I.7)
      H.5.3 Group and Organization Interfaces
          Subjects: Collaborative computing

General Terms:
Design, Human Factors

Keywords:
Co-presence, Co-work, Collaborative Virtual Environments, Evaluation, Telepresence