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Embodiments for Mixed Presence Groupware

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Author
Tang, Anthony
Neustaedter, Carmen
Greenberg, Saul
Accessioned
2008-02-27T22:05:31Z
Available
2008-02-27T22:05:31Z
Computerscience
2004-12-23
Issued
2004-12-23
Subject
Computer Science
Type
unknown
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Abstract
Large surfaces such as tabletop and whiteboard displays naturally afford collocated collaboration, where multiple people work together over the shared workspace. As large digital displays become more ubiquitous, it becomes increasingly important to examine their role in supporting groups of distributed collaborators working over the digital work surface. In particular, Mixed Presence Groupware (MPG) is software that connects both collocated and distributed collaborators and their disparate displays via a common shared virtual workspace. We have built several MPG systems by connecting several distributed displays, each with multiple input devices, thereby connecting both collocated and distributed collaborators. By observing how these systems are used, we found that MPG presents a unique problem called presenc1e disparity: collaborators focus their energies on collocated collaborators at the expense of their distributed counterparts. Presence disparity arises because the physical presence of collaborators varies across the MPG workgroup: physically collocated collaborators are seen in full fidelity, while remote participants are represented by only virtual embodiments. Consequently, we propose four design principles for MPG systems that we believe will help mitigate the problem of presence disparity in MPG. We then introduce how these principles are realized in VideoArms, an embodiment technique that digitally captures people s arms as they work over large work surfaces, and redisplays them as digital overlays on remote displays. Our evaluation of VideoArms validates its use in principle as an effective embodiment technique for MPG systems.
Notes
We are currently acquiring citations for the work deposited into this collection. We recognize the distribution rights of this item may have been assigned to another entity, other than the author(s) of the work.If you can provide the citation for this work or you think you own the distribution rights to this work please contact the Institutional Repository Administrator at digitize@ucalgary.ca
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University of Calgary
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Science
Doi
http://dx.doi.org/10.11575/PRISM/30680
Uri
http://hdl.handle.net/1880/45888
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