Publication statistics

Pub. period:1999-2006
Pub. count:7
Number of co-authors:8


Number of publications with 3 favourite co-authors:

Anoop Gupta:
Carman Neustaedter:
Jason Laberge:



Productive colleagues

Michael Boyle's 3 most productive colleagues in number of publications:

Saul Greenberg:140
Carman Neustaedter:30
Anoop Gupta:30

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Michael Boyle


Publications by Michael Boyle (bibliography)

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Greenberg, Saul and Boyle, Michael (2006): Generating custom notification histories by tracking visual differences between web page visits. In: Proceedings of the 2006 Conference on Graphics Interface 2006. pp. 227-234.

We contribute a method that lets people create a visual history of custom notifications to track personally meaningful changes to web pages. Notifications are assembled as a collage of regions extracted from the fully rendered (bitmap) representation of the web pages. They are triggered when visual changes between successive visits are detected within regions. To use the system, a person specifies a notification by clipping personally interesting regions from the bitmap representation of a web page and reformatting them into a small collage. The person then specifies regions on the page that will be monitored and compared for visual differences over time. Based on this specification, the system periodically revisits the page in the background on behalf of the user and automatically generations a notification (the collage plus a title and timestamp) when differences are detected. Finally, the person views the generated notifications in several ways: as only the most recently changed version (to illustrate current state), or as an image history that can be individually browsed or played back as a continuous video stream.

© All rights reserved Greenberg and Boyle and/or Canadian Information Processing Society

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Neustaedter, Carman, Greenberg, Saul and Boyle, Michael (2006): Blur filtration fails to preserve privacy for home-based video conferencing. In ACM Transactions on Computer-Human Interaction, 13 (1) pp. 1-36.

Always-on video provides rich awareness for distance-separated coworkers. Yet video can threaten privacy, especially when it captures telecommuters working at home. We evaluated video blurring, an image masking method long touted to balance privacy and awareness. Results show that video blurring is unable to balance privacy with awareness for risky situations. Reactions by participants suggest that other popular image masking techniques will be problematic as well. The design implication is that image masking techniques will not suffice for privacy protection in video-based telecommuting situations. Other context-aware privacy-protecting strategies are required, as illustrated in our prototype context-aware home media space.

© All rights reserved Neustaedter et al. and/or ACM Press

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Cadiz, Jonathan J., Narin, Attila, Jancke, Gavin, Gupta, Anoop and Boyle, Michael (2004): Exploring PC-telephone convergence with the enhanced telephony prototype. In: Dykstra-Erickson, Elizabeth and Tscheligi, Manfred (eds.) Proceedings of ACM CHI 2004 Conference on Human Factors in Computing Systems April 24-29, 2004, Vienna, Austria. pp. 215-222.

Industry trends suggest that the PC and telephone user experiences will converge over the next several years. This convergence raises important questions for the HCI community: how should the PC-phone user experience be designed, and how does PC-phone technology affect work practices? This paper focuses on the first question and provides some initial data on the second question. We describe a PC-phone prototype we built called Enhanced Telephony, and we report data from an eight month field deployment of Enhanced Telephony within our company where over 7,000 people installed the prototype. Results indicate that PC-phone software is a promising technology for the workplace and that the most valuable features may be those that help people manage their incoming calls.

© All rights reserved Cadiz et al. and/or ACM Press

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Boyle, Michael and Greenberg, Saul (2004): Display and Presence Disparity in Mixed Presence Groupware. In: Cockburn, Andy (ed.) AUIC2004 - User Interfaces 2004 - Fifth Australasian User Interface Conference 18-22 January, 2004, Dunedin, New Zealand. pp. 73-82.

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Greenberg, Saul and Boyle, Michael (2002): Customizable physical interfaces for interacting with conventional applications. In: Beaudouin-Lafon, Michel (ed.) Proceedings of the 15th annual ACM symposium on User interface software and technology October 27-30, 2002, Paris, France. pp. 31-40.

When using today's productivity applications, people rely heavily on graphical controls (GUI widgets) as the way to invoke application functions and to obtain feedback. Yet we all know that certain controls can be difficult or tedious to find and use. As an alternative, a customizable physical interface lets an end-user easily bind a modest number of physical controls to similar graphical counterparts. The user can then use the physical control to invoke the corresponding graphical control's function, or to display its graphical state in a physical form. To show how customizable physical interfaces work, we present examples that illustrate how our combined phidgets and widget tap packages are used to link existing application widgets to physical controls. While promising, our implementation prompts a number of issues relevant to others pursuing interface customization.

© All rights reserved Greenberg and Boyle and/or ACM Press

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Boyle, Michael, Edwards, Christopher and Greenberg, Saul (2000): The Effects of Filtered Video on Awareness and Privacy. In: Kellogg, Wendy A. and Whittaker, Steve (eds.) Proceedings of the 2000 ACM conference on Computer supported cooperative work 2000, Philadelphia, Pennsylvania, United States. pp. 1-10.

Video-based media spaces are designed to support casual interaction between intimate collaborators. Yet transmitting video is fraught with privacy concerns. Some researchers suggest that the video stream be filtered to mask out potentially sensitive information. While a variety of filtering techniques exist, they have not been evaluated for how well they safeguard privacy. In this paper, we analyze how a blur and a pixelize video filter might impact both awareness and privacy in a media space. Each filter is considered at nine different levels of fidelity, ranging from heavily applied filter levels that mask almost all information, to lightly applied filters that reveal almost everything. We examined how well observers of several filtered video scenes extract particular awareness cues: the number of actors; their posture (moving, standing, seated); their gender; the visible objects (basic to detailed); and how available people look (their busyness, seriousness and approachability). We also examined the privacy-preserving potential of each filter level in the context of common workplace activities. Our results suggest that the blur filter, and to a lesser extent the pixelize filter, have a level suitable for providing awareness information while safeguarding privacy.

© All rights reserved Boyle et al. and/or ACM Press

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Greenberg, Saul, Boyle, Michael and Laberge, Jason (1999): PDAs and Shared Public Displays: Making Personal Information Public, and Public Information Personal. In Personal and Ubiquitous Computing, 3 (1) . http://

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