Publication statistics

Pub. period:2008-2011
Pub. count:6
Number of co-authors:16



Co-authors

Number of publications with 3 favourite co-authors:

James R. Wallace:
Masahiko Inami:
Maki Sugimoto:

 

 

Productive colleagues

Jakob Leitner's 3 most productive colleagues in number of publications:

Masahiko Inami:47
Michael Haller:29
Stacey D. Scott:20
 
 
 

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Jakob Leitner

 

Publications by Jakob Leitner (bibliography)

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2011
 
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Leitner, Jakob and Haller, Michael (2011): Geckos: combining magnets and pressure images to enable new tangible-object design and interaction. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 2985-2994. Available online

In this paper we present Geckos, a new type of tangible objects which are tracked using a Force-Sensitive Resistance sensor. Geckos are based on low-cost permanent magnets and can also be used on non-horizontal surfaces. Unique pressure footprints are used to identify each tangible Gecko. Two types of tangible object designs are presented: Using a single magnet in combination with felt pads provides new pressure-based interaction modalities. Using multiple separate magnets it is possible to change the marker footprint dynamically and create new haptic experiences. The tangible object design and interaction are illustrated with example applications. We also give details on the feasibility and benefits of our tracking approach and show compatibility with other tracking technologies.

© All rights reserved Leitner and Haller and/or their publisher

 
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Leitner, Jakob and Haller, Michael (2011): Harpoon selection: efficient selections for ungrouped content on large pen-based surfaces. In: Proceedings of the 2011 ACM Symposium on User Interface Software and Technology 2011. pp. 593-602. Available online

In this paper, we present the Harpoon selection tool, a novel selection technique specifically designed for interactive whiteboards. The tool combines area cursors and crossing to perform complex selections amongst a large number of unsorted, ungrouped items. It is optimized for large-scale pen-based surfaces and works well in both dense and sparse surroundings. We describe a list of key features relevant to the design of the tool and provide a detailed description of both the mechanics as well as the feedback of the tool. The results of a user study are described and analyzed to confirm our design. The study shows that the Harpoon tool performs significantly faster than Tapping and Lassoing.

© All rights reserved Leitner and Haller and/or ACM Press

2010
 
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Haller, Michael, Leitner, Jakob, Seifried, Thomas, Wallace, James R., Scott, Stacey D., Richter, Christoph, Brandl, Peter, Gokcezade, Adam and Hunter, Seth (2010): The NICE discussion room: integrating paper and digital media to support co-located group meetings. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 609-618. Available online

Current technological solutions that enable content creation and sharing during group discussion meetings are often cumbersome to use, and are commonly abandoned for traditional paper-based tools, which provide flexibility in supporting a wide range of working styles and task activities that may occur in a given meeting. Paper-based tools, however, have their own drawbacks; paper-based content is difficult to modify or replicate. We introduce a novel digital meeting room design, the NiCE Discussion Room, which integrates digital and paper tools into a cohesive system with an intuitive pen-based interface. The combination of digital and paper media provides groups with a flexible design solution that enables them to create, access, and share information and media from a variety of sources to facilitate group discussions. This paper describes the design solution, along with results from a user study conducted to evaluate the usability and utility of the system.

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

2009
 
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Leitner, Jakob, Powell, James, Brandl, Peter, Seifried, Thomas, Haller, Michael, Dorray, Bernard and To, Paul (2009): Flux: a tilting multi-touch and pen based surface. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 3211-3216. Available online

FLUX is an interactive touch-sensitive tilting surface that can be used either as a sketching board, as an interactive discussion table, and as a digital presentation whiteboard. The surface, based on a rear-projection screen, supports both multi-touch interaction as well as multiple pen interaction with individual identification of each pen. Our setup combines two tracking technologies. For the hand-tracking, we take advantage of the Frustrated Total Internal Reflection (FTIR) technology. For the pen-tracking, we are using the tracking technology developed by Anoto.

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

 
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Brandl, Peter, Leitner, Jakob, Seifried, Thomas, Haller, Michael, Doray, Bernard and To, Paul (2009): Occlusion-aware menu design for digital tabletops. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 3223-3228. Available online

In this paper, we describe the design of menus for multi-user digital tabletops. On direct input surfaces, occlusions created by the user's hand decrease interaction performance with menus. The key design criteria are to avoid these occlusions and to adapt the menu placement to the user's handedness and position on the tabletop. We present an adaptive menu placement method based on direct touch and pen tracking that allows correct menu placement around the table. As an extension, we propose adding a gesture input area for fast interaction which can be partly occluded by the user's hand.

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

2008
 
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Leitner, Jakob, Haller, Michael, Yun, Kyungdahm, Woo, Woontack, Sugimoto, Maki and Inami, Masahiko (2008): IncreTable, a mixed reality tabletop game experience. In: Inakage, Masa and Cheok, Adrian David (eds.) Proceedings of the International Conference on Advances in Computer Entertainment Technology - ACE 2008 December 3-5, 2008, Yokohama, Japan. pp. 9-16. Available online

 
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