The effects of co-present embodiments on awareness and collaboration in tabletop groupware

ABSTRACT

Most current tabletop groupware systems use direct touch, where people manipulate objects by touching them with a pen or a fingertip. The use of people's real arms and hands provides obvious awareness information, but workspace access is limited by the user's reach. Relative input techniques, where users manipulate a cursor rather than touching objects directly, allow users to reach all areas of the table. However, the only available awareness information comes from the virtual embodiment of the user (e.g., their cursor). This presents designers with a tradeoff: direct-touch techniques have advantages for group awareness; relative input techniques offer additional power but less awareness information. In this paper, we explore this tradeoff, and we explore the design space of virtual embodiments to determine whether factors such as size, realism, and visibility can improve awareness and coordination. We conducted a study in which seven groups carried out a picture-categorizing task using seven techniques: direct touch and relative input with six different virtual embodiments. Our results provide both valuable information to designers of tabletop groupware, and a number of new directions for future research.

REFERENCES

• 1: Saskia Bakker , Debby Vorstenbosch , Elise van den Hoven , Gerard Hollemans , Tom Bergman, Weathergods: tangible interaction in a digital tabletop game, Proceedings of the 1st international conference on Tangible and embedded interaction, February 15-17, 2007, Baton Rouge, Louisiana [doi>10.1145/1226969.1227000]
• 2: Steve Benford , John Bowers , Lennart E. Fahlén , Chris Greenhalgh , Dave Snowdon, User embodiment in collaborative virtual environments, Proceedings of the SIGCHI conference on Human factors in computing systems, p.242-249, May 07-11, 1995, Denver, Colorado, United States [doi>10.1145/223904.223935]
• 3: Harry Brignull , Shahram Izadi , Geraldine Fitzpatrick , Yvonne Rogers , Tom Rodden, The introduction of a shared interactive surface into a communal space, Proceedings of the 2004 ACM conference on Computer supported cooperative work, November 06-10, 2004, Chicago, Illinois, USA [doi>10.1145/1031607.1031616]
• 4: Paul Dietz , Darren Leigh, DiamondTouch: a multi-user touch technology, Proceedings of the 14th annual ACM symposium on User interface software and technology, November 11-14, 2001, Orlando, Florida [doi>10.1145/502348.502389]
• 5: Endsley, M. R. Measurement of situation awareness in dynamic systems. Human Factors 37, 1 (1995), 65--84.
• 6: Endsley, M. R., Kiris, E. O. Situation awareness global assessment technique (SAGAT) TRACON air traffic control version user guide. Tech. report TTUIE-95-02, Industrial Eng., Texas Tech, 1995.
• 7: Clifton Forlines , Daniel Wigdor , Chia Shen , Ravin Balakrishnan, Direct-touch vs. mouse input for tabletop displays, Proceedings of the SIGCHI conference on Human factors in computing systems, April 28-May 03, 2007, San Jose, California, USA [doi>10.1145/1240624.1240726]
• 8: Jörg Geißler, Shuffle, throw or take it! working efficiently with an interactive wall, CHI 98 conference summary on Human factors in computing systems, p.265-266, April 18-23, 1998, Los Angeles, California, United States [doi>10.1145/286498.286745]
• 9: Saul Greenberg , Carl Gutwin , Mark Roseman, Semantic Telepointers for Groupware, Proceedings of the 6th Australian Conference on Computer-Human Interaction (OZCHI '96), p.54, November 24-27, 1996
• 10: Carl Gutwin , Saul Greenberg, A Descriptive Framework of Workspace Awareness for Real-Time Groupware, Computer Supported Cooperative Work, v.11 n.3, p.411-446, 2002 [doi>10.1023/A:1021271517844]
• 11: Vicki Ha , Kori M. Inkpen , Tara Whalen , Regan L. Mandryk, Direct Intentions: The Effects of Input Devices on Collaboration around a Tabletop Display, Proceedings of the First IEEE International Workshop on Horizontal Interactive Human-Computer Systems, p.177-184, January 05-07, 2006 [doi>10.1109/TABLETOP.2006.10]
• 12: Hascoët, M., Throwing Models for Large Displays. Proc. HCI 2003, British HCI Group, 73--77.
• 13: 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]
• 14: Microsoft Surface Computing. http://www.surface.com
• 15: Brad A. Myers , Rishi Bhatnagar , Jeffrey Nichols , Choon Hong Peck , Dave Kong , Robert Miller , A. Chris Long, Interacting at a distance: measuring the performance of laser pointers and other devices, Proceedings of the SIGCHI conference on Human factors in computing systems: Changing our world, changing ourselves, April 20-25, 2002, Minneapolis, Minnesota, USA [doi>10.1145/503376.503383]
• 16: Miguel A. Nacenta , David Pinelle , Dane Stuckel , Carl Gutwin, The effects of interaction technique on coordination in tabletop groupware, Proceedings of Graphics Interface 2007, May 28-30, 2007, Montreal, Canada [doi>10.1145/1268517.1268550]
• 17: Miguel A. Nacenta , Dzmitry Aliakseyeu , Sriram Subramanian , Carl Gutwin, A comparison of techniques for multi-display reaching, Proceedings of the SIGCHI conference on Human factors in computing systems, April 02-07, 2005, Portland, Oregon, USA [doi>10.1145/1054972.1055024]
• 18: O'Brien, R. G. A General ANOVA Method for Robust Tests of Additive Models for Variances, Journal of the American Statistical Assoc., 74(368), 1979, 877--880.
• 19: J. Karen Parker , Regan L. Mandryk , Kori M. Inkpen, TractorBeam: seamless integration of local and remote pointing for tabletop displays, Proceedings of Graphics Interface 2005, May 09-11, 2005, Victoria, British Columbia
• 20: Pauchet, A., Coldefy, F., Lefebvre, L., Louis dit Picard, S., Perron, L., Guérin, J. TableTops: worthwhile experience of collocated and remote collaboration. Proceedings of Tabletop 2007.
• 21: Pinelle, D., Dyck, J., Gutwin, C., Stach, T. (2006) Cutouts: Multiple Views for Tabletop Groupware, Tech Report HCI-TR-06-04.
• 22: Ramsey, P. H. Testing Variances in Psychological and Educational Research, Journal of Educational Statistics 19(1), 1994, 23--42.
• 23: Jun Rekimoto , Masanori Saitoh, Augmented surfaces: a spatially continuous work space for hybrid computing environments, Proceedings of the SIGCHI conference on Human factors in computing systems: the CHI is the limit, p.378-385, May 15-20, 1999, Pittsburgh, Pennsylvania, United States [doi>10.1145/302979.303113]
• 24: Jun Rekimoto, Pick-and-drop: a direct manipulation technique for multiple computer environments, Proceedings of the 10th annual ACM symposium on User interface software and technology, p.31-39, October 14-17, 1997, Banff, Alberta, Canada [doi>10.1145/263407.263505]
• 25: Stacey D. Scott , M. Sheelagh , T. Carpendale , Kori M. Inkpen, Territoriality in collaborative tabletop workspaces, Proceedings of the 2004 ACM conference on Computer supported cooperative work, November 06-10, 2004, Chicago, Illinois, USA [doi>10.1145/1031607.1031655]
• 26: Tadeusz Stach , Carl Gutwin , David Pinelle , Pourang Irani, Improving recognition and characterization in groupware with rich embodiments, Proceedings of the SIGCHI conference on Human factors in computing systems, April 28-May 03, 2007, San Jose, California, USA [doi>10.1145/1240624.1240627]
• 27: Kishore Swaminathan , Steve Sato, Interaction design for large displays, interactions, v.4 n.1, p.15-24, Jan./Feb. 1997 [doi>10.1145/242388.242395]
• 28: John C. Tang , Scott Minneman, VideoWhiteboard: video shadows to support remote collaboration, Proceedings of the SIGCHI conference on Human factors in computing systems: Reaching through technology, p.315-322, April 27-May 02, 1991, New Orleans, Louisiana, United States [doi>10.1145/108844.108932]
• 29: Tang, A., Neustaedter, C., Greenberg, S., VideoArms: Embodiments for Mixed Presence Groupware. Proc HCI 2006, 85--102.
• 30: Brygg Ullmer , Hiroshi Ishii , Dylan Glas, mediaBlocks: physical containers, transports, and controls for online media, Proceedings of the 25th annual conference on Computer graphics and interactive techniques, p.379-386, July 1998 [doi>10.1145/280814.280940]

INDEX TERMS

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

Keywords:
embodiments, interaction techniques, tabletop groupware