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Dissertation Defense

WHAT:
Alexandra Mazalek:
"Media Tables: An Extensible Method for Developing Multi-User Media Interaction Platforms for Shared Spaces"

WHEN:
Tuesday, July 12, 2005, 10:00 AM EST

WHERE:
Bartos Theatre, MIT Media Lab (E15)

DISSERTATION COMMITTEE:
Glorianna Davenport
Principal Research Associate, Program in Media Arts and Sciences
Massachusetts Institute of Technology

William J. Mitchell
Professor of Architecture and Media Arts and Sciences
Massachusetts Institute of Technology

Joseph A. Paradiso
Associate Professor, Program in Media Arts and Sciences
Massachusetts Institute of Technology

ABSTRACT:
As digital entertainment applications evolve, there is a need for new kinds of platforms that can support sociable media interactions for everyday consumers. This thesis demonstrates an extensible method and sensing framework for real-time tracking of multiple objects on an interactive table with an embedded display. This tabletop platform can support many different applications, and is designed to overcome the commercial obstacles of previous single purpose systems.

The approach is supported through the design and implementation of an acoustic-based sensing system that provides a means for managing large numbers of objects and applications across multiple platform instances. The design requires precise and dynamic positioning of multiple objects in order to enable real-time multi-user interactions with media applications. Technical analysis shows the approach to be robust, scalable to various sizes, and accurate to within a few millimeters of tolerance. A qualitative user evaluation of the table within a real-world setting illustrates its usability in the consumer entertainment space for digital media browsing and game play. Our observations revealed different ways of mapping physical interaction objects to the media space, as either generic controls or fixed function devices, and highlighted the issue of directionality on visual displays that are viewable from different sides.

The thesis suggests that by providing a general-purpose method for shared tabletop display platforms we give application designers the freedom to invent a broad range of media interactions and applications for everyday social environments, such as homes, classrooms, and public spaces. Contributions of the thesis include: formulation of an extensible method for media table platforms; development of a novel sensing approach for dynamic object-tracking on glass surfaces; a taxonomy of interface design considerations; and prototype designs for media content browsing, digital storytelling, and game play applications.


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