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Julien Letessier

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Publications by Julien Letessier (bibliography)

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2006
 
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Borkowski, Stanislaw, Maisonnaisse, Jérôme, Letessier, Julien and Crowley, James L. (2006): Exploiter des interfaces mobiles dans le cadre d'un travail collaboratif co-présent. In: Proceedings of the 2006 Conference of the Association Francophone dInteraction Homme-Machine 2006. pp. 283-284.

With the advent of new display technologies, our working habits are likely to change. Tabletop displays and lightweight portable devices will diminish current spatial constraints, and allow new forms of computer assisted work. To anticipate this trend, it is necessary to explore new interaction scenarios based on mobile interfaces. In this video, we present an editing application in which a portable interface allows users to collaboratively author a presentation. We describe our approach to create projection-based mobile interfaces, and outline an ongoing experiment evaluating different interaction techniques for passing the control of a mobile interface.

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

2005
 
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Borkowski, Stanislaw, Letessier, Julien and Crowley, James L. (2005): Spatial Control of Interactive Surfaces in an Augmented Environment. In: Bastide, Remi, Palanque, Philippe A. and Roth, Jörg (eds.) Engineering Human Computer Interaction and Interactive Systems, Joint Working Conferences EHCI-DSVIS 2004 July 11-13, 2005, Hamburg, Germany. pp. 228-244.

2004
 
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Letessier, Julien and Berard, Francois (2004): Visual tracking of bare fingers for interactive surfaces. In: Proceedings of the 2004 ACM Symposium on User Interface Software and Technology 2004. pp. 119-122.

Visual tracking of bare fingers allows more direct manipulation of digital objects, multiple simultaneous users interacting with their two hands, and permits the interaction on large surfaces, using only commodity hardware. After presenting related work, we detail our implementation. Its design is based on our modeling of two classes of algorithms that are key to the tracker: Image Differencing Segmentation (IDS) and Fast Rejection Filters (FRF). We introduce a new chromatic distance for IDS and a FRF that is independent to finger rotation. The system runs at full frame rate (25 Hz) with an average total system latency of 80 ms, independently of the number of tracked fingers. When used in a controlled environment such as a meeting room, its robustness is satisfying for everyday use.

© All rights reserved Letessier and Berard and/or ACM Press

 
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Changes to this page (author)

17 Apr 2011: Modified
03 Jun 2009: Modified
25 Jul 2007: Modified
11 Jun 2007: Added

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URL: http://www.interaction-design.org/references/authors/julien_letessier.html
Jul 10

Visual appearance is one of the most effective variables for quickly differentiating one application from another

-- Bob Baxley, 2003

 
 

Featured chapter

Marc Hassenzahl explains the fascinating concept of User Experience and Experience Design. Commentaries by Don Norman, Eric Reiss, Mark Blythe, and Whitney Hess

User Experience and Experience Design !

 
 

Our Latest Books

Kumar and Herger 2013: Gamification at Work: Designing Engaging Business Software...
by Janaki Mythily Kumar and Mario Herger

 
Start reading

Whitworth and Ahmad 2013: The Social Design of Technical Systems: Building technologies for communities...
by Brian Whitworth and Adnan Ahmad

 
Start reading

Soegaard and Dam 2013: The Encyclopedia of Human-Computer Interaction, 2nd Ed....
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

Help us help you!