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Prof. Dr. Andreas Butz
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Projects |
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- FLUIDUM 2002-01-12 – 2005-03-12
- REAL-p3 2002-01-01 – 2004-12-31
- REAL-p2 1999-01-01 – 2001-12-31
- REAL-p1 1996-01-01 – 1998-12-31
Publications |
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2008
Beam-Its – Virtual Sticky Notes in the Real World
Lübomira Spassova and Andreas Butz
Adjunct Proceedings of Pervasive Computing 2008
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We present the concept, design, and implementation of Beam-Its, a virtual version of sticky notes, which can be placed in the physical environment. Beam-Its are created on a PDA and placed on objects or surfaces in the environment, where they are currently displayed by a steerable projector. Beam-Its can contain handwritten text and sketches, just as physical Post-Its, but also photos and sound recordings made on the PDA, thus extending the functionality of physical Post-Its. They can also appear or disappear depending on context, which enables additional usage scenarios.
A Survey of Human-Computer Interaction Design in Science Fiction Movies
M. Schmitz, Ch. Endres and A. Butz
Second International Conference on Intelligent Technologies for Interactive Entertainment (ICST INTETAIN ’08). January 8-10, 2008, Cancun, Mexico. Copyright 2008 ICST. ISBN 978-963-9799-13-4.
2006
SAFIR: Low-Cost Spatial Audio for Instrumented Environments
Michael Schmitz and Andreas Butz
Proceedings of the 2nd International Conference on Intelligent Environments, 5-6 July, 2006, Athens, Greece, ISSN 0537-9989, p. 427-430
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We present a high-level Java API that allows developers of pervasive computing environments to integrate 2D or 3D spatial sound over loudspeakers into systems without any DSP knowledge. The system is platform independent and allows most arbitrary speaker configurations, thereby providing a scalable tool for real-time spatialization with low-cost off-the-shelf hardware.
2005
Design and Implementation of a Widget Set for Steerable Projector-Camera Units
Dennis Reiter and Andreas Butz
Proceedings of the International Symposium on Mixed and Augmented Reality (ISMAR) 2005
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We describe the design and implementation of graphical interaction widgets for use with a steerable projectorcamera unit. The design of our widgets is adapted to provide
the right visual cues when projected and they are controlled by the user’s hand. The widgets’ input regions are arranged in an ergonomic way and they use a simple but robust computer vision technique for interaction.
Design and Applications of a Beer Mat for Pub Interaction
Andreas Butz and Michael Schmitz
Poster at The Seventh International Conference on Ubiquitous Computing (Ubicomp 2005), September 11—14, 2005, Tokyo, Japan
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We describe the design of an interactive beer mat for the support of entertainment activities in pubs. The mat uses a gravity sensor to sense motion and orientation in space and a pressure sensor to sense the weight resting on it. Care was also taken to preserve its original functions, such as absorbing superfluous liquids and providing advertising space. We present a number of activities supported by the mat and show how it can improve the profit of the pub and the mood of the crowd simultaneously.
Effectiveness of User Notification in Ambient Soundscapes
Ralf Jung, Andreas Butz
Proceedings of the workshop on Auditory Displays for Mobile Context-Aware Systems at Pervasive 2005, 8-13 May, 2005, Munich, Germany
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In this paper we present an ambient audio notification system for multi-user environments. It provides unobtrusive notification by embedding audio cues in an ambient soundscape consisting of specially arranged pieces of music. The audio cues are distinct either in their instrumentation or in their rhythmic pattern and complement a musical core of the soundscape. To test the e ectiveness of our system we conducted a study with 25 subjects and compared notification e ectiveness and reaction speed between our approach and salient notification sounds which were not embedded into the soundscape. We present the key findings and some implications following from the evaluation of our study.
Tangible UIs for Media Control - Probes Into the Design Space
Andreas Butz, Michael Schmitz, Antonio Krüger and Harald Hullmann
in extended Proceedings of CHI 2005, April 2 - 7, 2005, Portland, Oregon, USA
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In a student project over the summer of 2004 teams of computer science and product design students worked together to develop new forms of interfaces for media control in living room contexts. In this paper we des-cribe the design process from collecting first ideas of design choices and iteratively evolving (low-fidelity) prototypes to fully functional products, partially even meeting mass production requirements. We discuss how the interdisciplinary collaboration influenced the creative process in such a way, that the solutions were more realistic than purely design-informed solutions and more inspired than purely technology-informed ones. We experienced that the combination of skills lead to a much more focused design process, which produced fully functional prototypes in a short time. The resulting designs include one interface installed in the room, two autonomous interaction objects which can be freely moved around, and a two-handed inter-face. While these are only small spotlights into a large design space, they nicely show the possible diversity. We also learned that fully functional and aesthetically pleasing prototypes can be developed with techno-logically relatively simple means.
Seamless User Notification in Ambient Soundscapes (IUI 2005)
Andreas Butz , Ralf Jung
Proceedings of IUI 2005, January 10-13, 2005, San Diego, California, USA
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We describe a method for notifying users through auditory cues embedded in an ambient soundscape in the environment. It uses pieces of music which are composed in such a way, that particular instruments or motifs can be added or omitted without losing the aesthetic quality of the overall composition. This allows for very subtle modifications in the soundscape which are only noticed by those users who have chosen this particular instrument or motif as their notification instrument before. As a side effect, the soundscape itself can be used to subtly influence the mood of users. The method has been implemented in a prototype, which we briefly discuss. The prototype is implemented using a spatial audio framework and can hence notify users from particular directions.
2004
SearchLight - A Lightweight Search Function for Pervasive Environments
Andreas Butz, Michael Schneider, Mira Spassova
Pervasive Computing, Second International Conference
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We present a lightweight search function for physical objects
in instrumented environments. Objects are tagged with optical
markers which are scanned by a steerable camera and
projector unit on the ceiling. The same projector can then
highlight the objects when given the corresponding marker
ID. The process is very robust regarding calibration, and no
3D model of the environment is needed. We discuss the scenario
of finding books in a library or office environment and
several extensions currently under development.
The Connected User Interface: Realizing a Personal Situated Navigation Service
Antonio Krüger, Andreas Butz, Christian Müller, Christoph Stahl, Rainer Wasinger, Karl-Ernst Steinberg, Andreas Dirschl
In Proceedings of the 9th International Conference on Intelligent User Interfaces (IUI 2004), ACM Press, 2004, pp. 161-168.
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Navigation services can be found in different situations and contexts: while using the web with a desktop PC, in cars, and more recently also when being a pedestrian on PDAs. These services are usually well designed for their specific purpose, but fail to work in other situations. In this paper we present an approach that connects a variety of specialized user interfaces to achieve a personal navigation service spanning different situations. We describe the concepts behind the BPN (BMW Personal Navigator), an entirely implemented
system that combines a desktop event and route planner, a car navigation system, and a multi-modal, in- and outdoor pedestrian navigation system for a PDA. Rather than designing for one unified UI, we focus on connecting specialized UIs for desktop, in-car and on-foot use.
2001
A Hybrid Indoor Navigation System
Andreas Butz, Jörg Baus, Antonio Krüger, and M. Lohse
Proceedings of IUI2001: International Conference on
Intelligent User Interfaces 2001,
ACM Press, New York
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We describe a hybrid building navigation system consisting of stationary information booths and a mobile communication infrastructure feeding small portable devices. The graphical presentations for both the booths and the mobile devices are generated from a common source and for the common task of way finding, but they use different techniques to convey possibly different subsets of the relevant information. The form of the presentations is depending on technical limitations of the output media, accuracy of location information, and cognitive restrictions of the user. We analyze what information needs to be conveyed, how limited resources influence the presentation of this information, and argue, that by generating all different presentations in a common framework, a consistent appearance across devices can be achieved and that the different device classes can complement each other in facilitating the navigation task.
Some Remarks on Automated Sketch Generation for
Mobile Route Descriptions
Jörg Baus, Andreas Butz, Antonio Krüger, and M. Lohse
Proceedings of the 1st Symposium on Smart Graphics,
ACM Press, New York , 2001
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The next generation of route description systems will not only give way information at the beginning, but also during the way-finding task. The information will be brought to the user by stationary and mobile displays (e.g. info kiosk or PDA). Especially graphics play an important role to convey way finding information. In this paper we explain an approach, to generate such graphics that are tailored to the use on mobile devices.
2000
Some Aspects of Scouting Smart Environments
Jörg Baus, C. Breihof, Andreas Butz, M. Lohse, Antonio Krüger
Proceedings of the AAAI Spring Symposium on "Smart Graphics",
March 20th-22nd 2000, Stanford, CA, USA .
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We discuss a virtual presenter in the form of a 3D avatar whose task it is to show people a way through a (3D model of a) public building. Our thesis is that when looking for way descriptions, seeing such a walkthrough guided by a virtual scout is easier to remember than a purely textual description of the way or the kind of annotated floor plans used widely in today's public buildings. Furthermore, we discuss some technical aspects of how such a scout can be constructed and what underlying data and processes are needed for the automated generation of guided way descriptions. One of our main goals is to give the avatar the possibility to react to her spatial environment in an appropriate matter, e.g. pointing to relevant objects and following a path that can be easily memorized by the viewer. The walkthroughs described here will be used within a building navigation system that also includes navigation via a handheld device, (such as a PDA,) once the user has left the information booth. Both the 3D visualization at the info booth and the more sketch-like presentation on the PDA are generated from the same data and by the same system, and thus can refer to each other for a much more consistent overall appearance. Last modified: Wed Dec 15 15:46:32 MET 1999
Incorporating a Virtual Presenter in a
Resource Adaptive Navigational Help System.
Jörg Baus,, Andreas Butz, Antonio Krüger
Workshop - Guiding Users through Interactive Experiences:
Usability Centred Design and Evaluation of Virtual 3D Environments
Paderborn, Germany, April 13-14, 2000
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We discuss a virtual presenter in the form of a 3D avatar whose task it is to show users their way through a (3D model of a) public building. Our thesis is that when looking for way descriptions, seeing such a walkthrough guided by a virtual scout is easier to remember than a purely textual description or the kind of annotated floor plans used widely in today's public buildings. Furthermore, we discuss some technical aspects of how such a scout can be constructed and what underlying data and processes are needed for the automated generation of guided route descriptions. One of our main goals is to give the avatar the ability to react to the spatial environment in an appropriate manner, e.g., by pointing to relevant objects and following a path that can be easily memorized by the viewer. We introduce the concept of bounds objects useful for the computation of spatial relations and behavior activation of the virtual presenter. The final presentation is then performed by the virtual presenter moving along a path scouting the surroundings. The presenter is made sensitive to the objects in the environment, thus getting only the relevant information depending on its task and position. It will perform the task alone without system intervention, by querying the environment using the bounds concept to trigger behaviors and to establish an egocentric frame of reference.
Different Views on Location Awareness
Andreas Butz, Jörg Baus, and Antonio Krüger
Workshop notes of the ECAI 2000 workshop on
Artificial Intelligence in Mobile Systems
August 22, 2000, Berlin, Germany
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Location awareness is a key ingredient to many applications of mobile devices. Devices with the ability to determine their own position can retrieve, filter or present information depending on this position in space. There are, however two different ways to view this situation resulting in different distributions of computational resources. We argue that in many cases it will be better and easier to put some computational effort and design wits into the environment and infrastructure than into the actual mobile device. In this sense we claim that there should be more artificial intelligence around mobile devices than in them.
Smart Graphics in Adaptive Way Descriptions.
Antonio Krüger, Jörg Baus, Andreas Butz
Proceedings of: Advanced Visual Interfaces 2000 (AVI2000), Italy.
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While car navigation systems are widely commercialized already today, pedestrian information systems are still in the early research stage. However, recent progress in mobile computing has opened perspectives for pedestrian navigation systems. In this context, graphics is and will still be an important modality to convey all types of route information. This paper will address the question how to generate graphics for navigation systems that help pedestrians, e.g., airport passengers, city tourists or conference attendees, to find their way in complex environments. We will discuss how the presentation of graphics can be tailored to various technical and cognitive constraints, and we will demonstrate our ideas within a scenario where a passenger of an airport gets navigational help from a stationary info booth and afterwards on her way via a handheld device (PDA). Both the 3D visualization at the info booth and the sketch-like presentation on the PDA are generated from the same data and by the same system, yet are adapted to the specific situation, output medium and user as far as possible
Augmenting Buildings with Infrared Information
Andreas Butz., Jörg Baus, and Antonio Krüger
Proceedings of the International Symposium on
Augmented Reality ISAR 2000,
IEEE Computer Society Press, 10662 Los Vaqueros Circle,
P.O. Box 3014, Los Alamitos, CA 9020-1264 (to appear)
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We describe a building information and navigation system based on Palm Pilot PDAs and a set of strong infrared transmitters, located throughout a building. The infrared senders stream localized data, thus effectively augmenting areas of space with localized information. This information can be perceived by just entering those areas with the PDA in your hand. We show that this form of augmentation of an environment can serve a multitude of purposes and requires neither the employment of classic 3D augmented reality nor to carry around wearable computers nor to wear head mounted displays.
1999
One Way Interaction: interactivity over unidirectional links
Jörg Baus, Andreas Butz, Antonio Krüger
Proceedings of the I3 workshop on
Adaptive Design of Interactive Multimedia
Presentations for Mobile Users,
Sunday, March 7, 1999, http://www.i3net.org/
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In this paper we describe a strategy to achieve limited interactivity in situations where part of the communication is restricted to one direction. We illustrate this strategy in a scenario in which a stationary presentation system generates adapted interactive graphical way descriptions for mobile users in the form of hypergraphics. These descriptions are shown on a mobile display unit with very limited computing capacity. For technical reasons the communication between the presentation system and the mobile display system is restricted to one direction (i.e. the broadcasting of information by the presentation system) and to a relatively low bandwidth. A limited form of interactivity of the generated graphical presentations can be achieved without sending back information from the mobile unit to the server. By anticipating all possible interactions with a generated hypergraphical presentation the necessary variations can be generated and broadcast. If the transmission of the different levels of this presentation tree follows a certain scheme, the available level of interactivity of a presentation increases over time (as its exploration consumes time), while a very fast availability of the first and most simplistic presentation can still be guaranteed. Furthermore, any delay that could be caused by communicating back and forth with the presentation system over the low bandwidth connection is avoided, since all the necessary presentation parts are cached on the display device after one broadcasting cycle.
Lectures |
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User Interface Design
(WS 2003)
User Interface Design
(WS 2003)