Publication statistics

Pub. period:2006-2011
Pub. count:8
Number of co-authors:27


Number of publications with 3 favourite co-authors:

John Helmes:
Eyal Ofek:
Hrvoje Benko:



Productive colleagues

Alex Butler's 3 most productive colleagues in number of publications:

Bill Buxton:78
Shahram Izadi:50
Hrvoje Benko:33

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Alex Butler


Publications by Alex Butler (bibliography)

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Butler, Alex, Hilliges, Otmar, Izadi, Shahram, Hodges, Steve, Molyneaux, David, Kim, David and Kong, Danny (2011): Vermeer: direct interaction with a 360° viewable 3D display. In: Proceedings of the 2011 ACM Symposium on User Interface Software and Technology 2011. pp. 569-576.

We present Vermeer, a novel interactive 360 viewable 3D display. Like prior systems in this area, Vermeer provides viewpoint-corrected, stereoscopic 3D graphics to simultaneous users, 360 around the display, without the need for eyewear or other user instrumentation. Our goal is to over-come an issue inherent in these prior systems which -- typically due to moving parts -- restrict interactions to outside the display volume. Our system leverages a known optical illusion to demonstrate, for the first time, how users can reach into and directly touch 3D objects inside the display volume. Vermeer is intended to be a new enabling technology for interaction, and we therefore describe our hardware implementation in full, focusing on the challenges of combining this optical configuration with an existing approach for creating a 360 viewable 3D display. Initially we demonstrate direct involume interaction by sensing user input with a Kinect camera placed above the display. However, by exploiting the properties of the optical configuration, we also demonstrate novel prototypes for fully integrated input sensing alongside simultaneous display. We conclude by discussing limitations, implications for interaction, and ideas for future work.

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

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Villar, Nicolas, Izadi, Shahram, Rosenfeld, Dan, Benko, Hrvoje, Helmes, John, Westhues, Jonathan, Hodges, Steve, Ofek, Eyal, Butler, Alex, Cao, Xiang and Chen, Billy (2009): Mouse 2.0: multi-touch meets the mouse. In: Proceedings of the ACM Symposium on User Interface Software and Technology 2009. pp. 33-42.

In this paper we present novel input devices that combine the standard capabilities of a computer mouse with multi-touch sensing. Our goal is to enrich traditional pointer-based desktop interactions with touch and gestures. To chart the design space, we present five different multi-touch mouse implementations. Each explores a different touch sensing strategy, which leads to differing form-factors and hence interactive possibilities. In addition to the detailed description of hardware and software implementations of our prototypes, we discuss the relative strengths, limitations and affordances of these novel input devices as informed by the results of a preliminary user study.

© All rights reserved Villar et al. and/or their publisher

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Hook, Jonathan, Taylor, Stuart, Butler, Alex, Villar, Nicolas and Izadi, Shahram (2009): A reconfigurable ferromagnetic input device. In: Proceedings of the ACM Symposium on User Interface Software and Technology 2009. pp. 51-54.

We present a novel hardware device based on ferromagnetic sensing, capable of detecting the presence, position and deformation of any ferrous object placed on or near its surface. These objects can include ball bearings, magnets, iron filings, and soft malleable bladders filled with ferrofluid. Our technology can be used to build reconfigurable input devices -- where the physical form of the input device can be assembled using combinations of such ferrous objects. This allows users to rapidly construct new forms of input device, such as a trackball-style device based on a single large ball bearing, tangible mixers based on a collection of sliders and buttons with ferrous components, and multi-touch malleable surfaces using a ferrofluid bladder. We discuss the implementation of our technology, its strengths and limitations, and potential application scenarios.

© All rights reserved Hook et al. and/or their publisher

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Izadi, Shahram, Butler, Alex, Hodges, Steve, West, Darren, Hall, Malcolm, Buxton, Bill and Molloy, Mike (2008): Experiences with building a thin form-factor touch and tangible tabletop. In: Third IEEE International Workshop on Tabletops and Interactive Surfaces Tabletop 2008 October 1-3, 2008, Amsterdam, The Netherlands. pp. 181-184.

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Butler, Alex, Izadi, Shahram and Hodges, Steve (2008): SideSight: multi-"touch" interaction around small devices. In: Cousins, Steve B. and Beaudouin-Lafon, Michel (eds.) Proceedings of the 21st Annual ACM Symposium on User Interface Software and Technology October 19-22, 2008, Monterey, CA, USA. pp. 201-204.

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Izadi, Shahram, Hodges, Steve, Taylor, Stuart, Rosenfeld, Dan, Villar, Nicolas, Butler, Alex and Westhues, Jonathan (2008): Going beyond the display: a surface technology with an electronically switchable diffuser. In: Cousins, Steve B. and Beaudouin-Lafon, Michel (eds.) Proceedings of the 21st Annual ACM Symposium on User Interface Software and Technology October 19-22, 2008, Monterey, CA, USA. pp. 269-278.

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Hodges, Steve, Izadi, Shahram, Butler, Alex, Rrustemi, Alban and Buxton, Bill (2007): ThinSight: versatile multi-touch sensing for thin form-factor displays. In: Proceedings of the ACM Symposium on User Interface Software and Technology October 7-10, 2007, Newport, Rhode Island, USA. pp. 259-268.

ThinSight is a novel optical sensing system, fully integrated into a thin form factor display, capable of detecting multi-ple fingers placed on or near the display surface. We describe this new hardware in detail, and demonstrate how it can be embedded behind a regular LCD, allowing sensing without degradation of display capability. With our approach, fingertips and hands are clearly identifiable through the display. The approach of optical sensing also opens up the exciting possibility for detecting other physical objects and visual markers through the display, and some initial experiments are described. We also discuss other novel capabilities of our system: interaction at a distance using IR pointing devices, and IR-based communication with other electronic devices through the display. A major advantage of ThinSight over existing camera and projector based optical systems is its compact, thin form-factor making such systems even more deployable. We therefore envisage using ThinSight to capture rich sensor data through the display which can be processed using computer vision techniques to enable both multi-touch and tangible interaction.

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

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Hodges, Steve, Williams, Lyndsay, Berry, Emma, Izadi, Shahram, Srinivasan, James, Butler, Alex, Smyth, Gavin, Kapur, Narinder and Wood, Kenneth R. (2006): SenseCam: A Retrospective Memory Aid. In: Dourish, Paul and Friday, Adrian (eds.) UbiComp 2006 Ubiquitous Computing - 8th International Conference September 17-21, 2006, Orange County, CA, USA. pp. 177-193.

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