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Displaying 1-50 out of 64 total
Guest Editor's Introduction: New Route in System Integration: Chip-Package Codesign
Found in: IEEE Micro
By Gerhard Tröster
Issue Date:July 1998
pp. 7-9
No summary available.
 
Smart Textiles: From Niche to Mainstream
Found in: IEEE Pervasive Computing
By Jingyuan Cheng,Paul Lukowicz,Niels Henze,Albrecht Schmidt,Oliver Amft,Giovanni A. Salvatore,Gerhard Troster
Issue Date:July 2013
pp. 81-84
Current technology supports only special-purpose, low-volume textiles, garments, and electronics. Moreover, the textile, electronic, and software industries have different product cycles, cultures, and price models, creating scores of practical problems fo...
 
Monitoring Stress Arousal in the Wild
Found in: IEEE Pervasive Computing
By Martin Kusserow,Oliver Amft,Gerhard Troster
Issue Date:April 2013
pp. 28-37
Wearable sensors can provide continuous biosignal measurements, which systems can use to infer psychological stress arousal. The authors deploy such sensors to monitor a public speaker, an on-stage musician, an Olympic ski jumper, and people during everyda...
 
Opportunistic human activity and context recognition
Found in: Computer
By D. Roggen,Gerhard Troster,P. Lukowicz,A. Ferscha,Jose del R. Millan,R. Chavarriaga
Issue Date:February 2013
pp. 36-45
Achieving true ambient intelligence calls for a new opportunistic activity recognition paradigm in which, instead of deploying information sources for a specific goal, the recognition methods themselves dynamically adapt to available sensor data.
 
Modeling arousal phases in daily living using wearable sensors
Found in: IEEE Transactions on Affective Computing
By M. Kusserow,O. Amft,Gerhard Troster
Issue Date:January 2013
pp. 93-105
In this work, we introduce methods for studying psychological arousal in naturalistic daily living. We present an activity-aware arousal phase modeling approach that incorporates the additional heart rate (AHR) algorithm to estimate arousal onsets (activat...
 
Recognizing Daily Life Context Using Web-Collected Audio Data
Found in: 2012 16th Annual International Symposium on Wearable Computers (ISWC)
By Mirco Rossi,Gerhard Troster,Oliver Amft
Issue Date:June 2012
pp. 25-28
This work presents an approach to model daily life contexts from web-collected audio data. Being available in vast quantities from many different sources, audio data from the web provides heterogeneous training data to construct recognition systems. Crowd-...
 
Kinect=IMU? Learning MIMO Signal Mappings to Automatically Translate Activity Recognition Systems across Sensor Modalities
Found in: 2012 16th Annual International Symposium on Wearable Computers (ISWC)
By Oresti Banos,Alberto Calatroni,Miguel Damas,Hector Pomares,Ignacio Rojas,Hesam Sagha,Jose del R. Mill´n,Gerhard Troster,Ricardo Chavarriaga,Daniel Roggen
Issue Date:June 2012
pp. 92-99
We propose a method to automatically translate a preexisting activity recognition system, devised for a source sensor domain S, so that it can operate on a newly discovered target sensor domain T, possibly of different modality. First, we use MIMO system i...
 
Inferring Crowd Conditions from Pedestrians' Location Traces for Real-Time Crowd Monitoring during City-Scale Mass Gatherings
Found in: 2012 IEEE 21st International Workshop On Enabling Technologies: Infrastructure For Collaborative Enterprises (WETICE)
By Martin Wirz,Tobias Franke,Daniel Roggen,Eve Mitleton-Kelly,Paul Lukowicz,Gerhard Troster
Issue Date:June 2012
pp. 367-372
There is a need for event organizers and emergency response personnel to detect emerging, potentially critical crowd situations at an early stage during city-wide mass gatherings. In this work, we introduce and describe mathematical methods based on pedest...
 
A Data-Driven Approach to Kinematic Analysis in Running Using Wearable Technology
Found in: Wearable and Implantable Body Sensor Networks, International Workshop on
By Christina Strohrmann,Mirco Rossi,Bert Arnrich,Gerhard Tröster
Issue Date:May 2012
pp. 118-123
Millions of people run. Movement scientists investigate the relationship of running kinematics to fatigue, injury, or running economy mainly using optical motion capture. It was found that running kinematics are highly individual and often cannot be summar...
 
Sensing Dance Engagement for Collaborative Music Control
Found in: Wearable Computers, IEEE International Symposium
By Michael Kuhn, Roger Wattenhofer, Martin Wirz, Matthias Flückiger, Gerhard Tröster
Issue Date:June 2011
pp. 51-54
We introduce a concept that allows attendees of a party to collaboratively influence the music selection process. As explicit feedback is likely to disturb the atmosphere, we introduce an unobtrusive, implicit feedback mechanism. In particular, we propose ...
 
What Do Sensors Know about Your Running Performance?
Found in: Wearable Computers, IEEE International Symposium
By Christina Strohrmann, Holger Harms, Gerhard Tröster
Issue Date:June 2011
pp. 101-104
About 489 000 athletes have finished a marathon in the US in 2009, the average training distance of athletes is 47.5 km per week. While average fitness runners (55.8%) train by self perception, a systematic assessment of kinematic parameters is limited to ...
 
Detecting Posture Mirroring in Social Interactions with Wearable Sensors
Found in: Wearable Computers, IEEE International Symposium
By Sebastian Feese, Bert Arnrich, Gerhard Tröster, Bertolt Meyer, Klaus Jonas
Issue Date:June 2011
pp. 119-120
We envision wearable social-behavioral assistants which measure the nonverbal behavior of their users during social interaction. Research in psychology has linked posture mirroring, a key element of nonverbal behavior, to rapport and empathy and has been f...
 
Smart Clothes—The Unfulfilled Pledge?
Found in: IEEE Pervasive Computing
By Gerhard Tröster
Issue Date:April 2011
pp. 87-89
<p>Inspired by Mark Weiser's 1991 prediction about computers for the 21st century,
 
Incremental kNN Classifier Exploiting Correct-Error Teacher for Activity Recognition
Found in: Machine Learning and Applications, Fourth International Conference on
By Kilian Förster, Samuel Monteleone, Alberto Calatroni, Daniel Roggen, Gerhard Tröster
Issue Date:December 2010
pp. 445-450
Non-stationary data distributions are a challenge in activity recognition from body worn motion sensors. Classifier models have to be adapted online to maintain a high recognition performance. Typical approaches for online learning are either unsupervised ...
 
An Educational and Research Kit for Activity and Context Recognition from On-body Sensors
Found in: Wearable and Implantable Body Sensor Networks, International Workshop on
By Daniel Roggen, Marc Bächlin, Johannes Schumm, Thomas Holleczek, Clemens Lombriser, Gerhard Tröster, Lars Widmer, Dennis Majoe, Jürg Gutknecht
Issue Date:June 2010
pp. 277-282
We present an educational and research kit to support hands-on teaching and experience of real-time activity or gesture recognition from on-body sensors. The kit is comprised of: wireless wearable sensor nodes for motion and ECG sensing; software infrastru...
 
What's in the Eyes for Context-Awareness?
Found in: IEEE Pervasive Computing
By Andreas Bulling, Daniel Roggen, Gerhard Troster
Issue Date:April 2011
pp. 48-57
<p>Eye movements are a rich source of information about a person's context. Analyzing the link between eye movements and cognition might even allow us to develop cognition-aware pervasive computing systems that assess a person's cognitive context.<...
 
Eye Movement Analysis for Activity Recognition Using Electrooculography
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Andreas Bulling, Jamie A. Ward, Hans Gellersen, Gerhard Tröster
Issue Date:April 2011
pp. 741-753
In this work, we investigate eye movement analysis as a new sensing modality for activity recognition. Eye movement data were recorded using an electrooculography (EOG) system. We first describe and evaluate algorithms for detecting three eye movement char...
 
Potentials of Enhanced Context Awareness in Wearable Assistants for Parkinson's Disease Patients with the Freezing of Gait Syndrome
Found in: Wearable Computers, IEEE International Symposium
By Marc Bächlin, Daniel Roggen, Gerhard Tröster, Meir Plotnik, Noit Inbar, Inbal Meidan, Talia Herman, Marina Brozgol, Eliya Shaviv, Nir Giladi, Jeffrey M. Hausdorff
Issue Date:September 2009
pp. 123-130
Freezing of gait (FOG) is a common gait deficit in advanced Parkinson’s disease (PD). It is often a cause of falls, interferes with daily activities and significantly impairs quality of life. Gait deficits in PD patients are often resistant to pharmacologi...
 
Unsupervised Classifier Self-Calibration through Repeated Context Occurences: Is there Robustness against Sensor Displacement to Gain?
Found in: Wearable Computers, IEEE International Symposium
By Kilian Förster, Daniel Roggen, Gerhard Tröster
Issue Date:September 2009
pp. 77-84
Achieving a robust recognition of physical activities or gestures despite variability in sensor placement is highly important for the real-world deployment of wearable context-aware systems.It provides robustness against unintentional displacement of senso...
 
Towards an Interactive Snowboarding Assistance System
Found in: Wearable Computers, IEEE International Symposium
By Thomas Holleczek, Christoph Zysset, Bert Arnrich, Daniel Roggen, Gerhard Tröster
Issue Date:September 2009
pp. 147-148
Snowboarding is one of the fastest growing sports in the world. However, it is rather difficult to learn. Snowboarders, who have reached an average level of expertise, often find it difficult to improve their style without taking expensive private lessons....
 
Decentralized Detection of Group Formations from Wearable Acceleration Sensors
Found in: Computational Science and Engineering, IEEE International Conference on
By Martin Wirz, Daniel Roggen, Gerhard Tröster
Issue Date:August 2009
pp. 952-959
We propose an approach for detecting collectivebehavior patterns using body-worn sensors in a decentralized,online manner. To reduce complexity, we introduce a set ofcollective behavior primitives as building blocks, adequate fordetection by sensing and co...
 
Performance Analysis of an HMM-Based Gesture Recognition Using a Wristwatch Device
Found in: Computational Science and Engineering, IEEE International Conference on
By Roman Amstutz, Oliver Amft, Brian French, Asim Smailagic, Dan Siewiorek, Gerhard Tröster
Issue Date:August 2009
pp. 303-309
Interaction with mobile devices that are intended for everyday use is challenging since such systems are continuously optimized towards small outlines. Watches are a particularly critical as display size, processing capabilities, and weight are tightly con...
 
On-Body Sensing Solutions for Automatic Dietary Monitoring
Found in: IEEE Pervasive Computing
By Oliver Amft, Gerhard Tröster
Issue Date:April 2009
pp. 62-70
Automatic dietary monitoring uses sensors to recognize eating behavior, offering vital, continuous infor­mation about a user's food intake. Using this information, administrators can adapt and personalize weight and diet coach­ing programs. The data can al...
 
Speech as a feedback modality for smart objects
Found in: Pervasive Computing and Communications, IEEE International Conference on
By Clemens Lombriser, Andreas Bulling, Andreas Breitenmoser, Gerhard Troster
Issue Date:March 2009
pp. 1-5
One part of the vision of ubiquitous computing is the integration of sensing and actuation nodes into everyday objects, clothes worn on the body, and in large numbers into the environment. These augmented environments require novel types of interfaces that...
 
Using a complex multi-modal on-body sensor system for activity spotting
Found in: Wearable Computers, IEEE International Symposium
By Georg Ogris, Thomas Stiefmeier, Paul Lukowicz, Gerhard Troster
Issue Date:October 2008
pp. 55-62
This paper describes an approach to real-life task tracking using a multi-modal, on-body sensor system. The specific example that we study is quality inspection in car production. This task is composed of up to 20 activity classes such as checking gaps bet...
 
Wearable Activity Tracking in Car Manufacturing
Found in: IEEE Pervasive Computing
By Thomas Stiefmeier, Daniel Roggen, Georg Ogris, Paul Lukowicz, Gerhard Tröster
Issue Date:April 2008
pp. 42-50
In an industrial scenario, a context-aware wearable computing system could support a production or maintenance worker. The system could recognize the worker's actions and deliver just-in-time information about activities the worker is to perform. This arti...
 
Automatic Identification of Temporal Sequences in Chewing Sounds
Found in: Bioinformatics and Biomedicine, IEEE International Conference on
By Oliver Amft, Martin Kusserow, Gerhard Tröster
Issue Date:November 2007
pp. 194-201
analysis and detection of food patterns is an important component of an automatic dietary monitoring system. However chewing is a time-variable process depending on food properties. We present an automated methodology to extract sub-sequences of similar ch...
 
Recognizing Upper Body Postures using Textile Strain Sensors
Found in: Wearable Computers, IEEE International Symposium
By Corinne Mattmann, Oliver Amft, Holger Harms, Gerhard Troster, Frank Clemens
Issue Date:October 2007
pp. 1-8
In this paper we present a garment prototype using strain sensors to recognize upper body postures. A novel thermoplastic elastomer strain sensor was used for measuring strain in the clothing. This sensor has a linear resistance response to strain, a small...
 
Fusion of String-Matched Templates for Continuous Activity Recognition
Found in: Wearable Computers, IEEE International Symposium
By Thomas Stiefmeier, Daniel Roggen, Gerhard Troster
Issue Date:October 2007
pp. 1-4
This paper describes a new method for continuous activity recognition based on fusion of string-matched activity templates. The underlying segmentation and spotting approach is carried out on several symbol streams in parallel. These streams represent moti...
 
InSense: Interest-Based Life Logging
Found in: IEEE Multimedia
By Mark Blum, Alex (Sandy) Pentland, Gerhard Tröster
Issue Date:October 2006
pp. 40-48
Our wearable data collection system lets users collect their experiences into a continually growing and adapting multimedia diary. The system--called inSense--uses the patterns in sensor readings from a camera, microphone, and accelerometers to classify th...
 
Textile Pressure Sensor for Muscle Activity and Motion Detection
Found in: Wearable Computers, IEEE International Symposium
By Jan Meyer, Paul Lukowicz, Gerhard Troster
Issue Date:October 2006
pp. 69-72
This paper presents a pure textile, capacitive pressure sensor designed for integration into clothing to measure pressure on human body. The applications fields cover all domains where a soft and bendable sensor with a high local resolution is needed, e.g....
 
Maximum Power Point Tracking (MPPT) for on-body Context Systems
Found in: Wearable Computers, IEEE International Symposium
By Nagendra Bharatula, Jamie Ward, Paul Lukowicz, Gerhard Troster
Issue Date:October 2006
pp. 135-136
In this article we present the use of MPPT (Maximum-Power-Point-Tracking) for miniaturized on-body activity recognition systems. We evaluate different solarcells and apply MPPT to study the suitability for on-line activity systems. With a wrist worn solar ...
 
Dealing with Class Skew in Context Recognition
Found in: Distributed Computing Systems Workshops, International Conference on
By Mathias Stager, Paul Lukowicz, Gerhard Troster
Issue Date:July 2006
pp. 58
As research in context recognition moves towards more maturity and real life applications, appropriate and reliable performance metrics gain importance. This paper focuses on the issue of performance evaluation in the face of class skew (varying, unequal o...
 
Sensing Muscle Activities with Body-Worn Sensors
Found in: Wearable and Implantable Body Sensor Networks, International Workshop on
By Oliver Amft, Gerhard Troster, Paul Lukowicz, Corina Schuster
Issue Date:April 2006
pp. 138-141
We demonstrate that simple, unobtrusive sensors attached to the lower arm can be used to capture muscle activations during specific hand and arm activities such as grasping. Specifically, we investigate the use of force sensitive resistors and fabric stret...
 
Power and Size Optimized Multi-Sensor Context Recognition Platform
Found in: Wearable Computers, IEEE International Symposium
By Nagendra B. Bharatula, Mathias Stager, Paul Lukowicz, Gerhard Troster
Issue Date:October 2005
pp. 194-195
<p>This paper presents a miniaturized low-power platform for real-time activity recognition. The wearable sensor system comprises of accelerometers, a microphone, a light sensor and signal processing units. The recognition is performed with low-power...
 
Hybrid Micropower Supply for Wearable-Pervasive Sensor nodes
Found in: Wearable Computers, IEEE International Symposium
By Nagendra B. Bharatula, Rolf Zinniker, Gerhard Troster
Issue Date:October 2005
pp. 196-197
This article presents an architecture of hybrid micro power supply for wearable-pervasive sensor nodes. A lithium-ion button battery and a photo voltaic module with efficient power management circuitry are implemented as a miniaturised system. The performa...
 
Using Ultrasonic Hand Tracking to Augment Motion Analysis Based Recognition of Manipulative Gestures
Found in: Wearable Computers, IEEE International Symposium
By Georg Ogris, Thomas Stiefmeier, Holger Junker, Paul Lukowicz, Gerhard Tr¨oster
Issue Date:October 2005
pp. 152-159
<p>The paper demonstrates how ultrasonic hand tracking can be used to improve the performance of a wearable, accelerometer and gyroscope based activity recognition system. Specifically we target the recognition of manipulative gestures of the type fo...
 
Detection of eating and drinking arm gestures using inertial body-worn sensors
Found in: Wearable Computers, IEEE International Symposium
By Oliver Amft, Holger Junker, Gerhard Tr¨oster
Issue Date:October 2005
pp. 160-163
<p>We propose a two-stage recognition system for detecting arm gestures related to human meal intake. Information retrieved from such a system can be used for automatic dietary monitoring in the domain of behavioural medicine. We demonstrate that arm...
 
Implementation and Evaluation of a Low-Power Sound-Based User Activity Recognition System
Found in: Wearable Computers, IEEE International Symposium
By Mathias Stäger, Paul Lukowicz, Gerhard Tröster
Issue Date:November 2004
pp. 138-141
The paper presents a prototype of a wearable, sound-analysis based, user activity recognition device. It focuses on low-power realization suitable for a miniaturized implementation. We describe a tradeoff analysis between recognition performance and comput...
 
Sampling Frequency, Signal Resolution and the Accuracy of Wearable Context Recognition Systems
Found in: Wearable Computers, IEEE International Symposium
By Holger Junker, Paul Lukowicz, Gerhard Tröster
Issue Date:November 2004
pp. 176-177
In this paper, we evaluate how the performance of a wearable context recognition system is affected by the sampling frequency and the resolution of the sensor signals used for the classification. We introduce our method for this evaluation and present the ...
   
Continuous Recognition of Arm Activities With Body-Worn Inertial Sensors
Found in: Wearable Computers, IEEE International Symposium
By Holger Junker, Paul Lukowicz, Gerhard Tröster
Issue Date:November 2004
pp. 188-189
This paper presents a new method for recognizing non periodic, sporadic arm-related activities in a continuous signal stream from body-worn inertial sensors. The method utilizes a segmentation scheme based on a natural, dynamic signal partitioning.
   
Wireless, Low-Cost Interface for Body Area Networks
Found in: Wearable Computers, IEEE International Symposium
By Ivo Locher, Holger Junker, Tünde Kirstein, Gerhard Tröster
Issue Date:November 2004
pp. 170-171
Embedding of electronics in clothing raises the demand for wireless interconnections for short distances. A low-power transmitter-receiver concept of low-complexity is a crucial factor for maintaining low costs and battery life in a distributed on-body sen...
   
Design of the QBIC Wearable Computing Platform
Found in: Application-Specific Systems, Architectures and Processors, IEEE International Conference on
By Oliver Amft, Michael Lauffer, Stijn Ossevoort, Fabrizio Macaluso, Paul Lukowicz, Gerhard Tröster
Issue Date:September 2004
pp. 398-410
Wearable computing systems can be broadly defined as mobile electronic devices that can be unobtrusively embedded in a user's outfit as part of the garment or an accessory. Unlike conventional mobile devices, such systems shall be virtually invisible, not ...
 
A Systematic Approach to the Design of Distributed Wearable Systems
Found in: IEEE Transactions on Computers
By Urs Anliker, Jan Beutel, Matthias Dyer, Rolf Enzler, Paul Lukowicz, Lothar Thiele, Gerhard Tröster
Issue Date:August 2004
pp. 1017-1033
<p><b>Abstract</b>—Wearable computing has recently gained much popularity as an ambitious vision for future personalized mobile systems. Its aim is intelligent, environment aware systems unobtrusively embedded into the mobile environments...
 
SoundButton: Design of a Low Power Wearable Audio Classification System
Found in: Wearable Computers, IEEE International Symposium
By Mathias Stäger, Paul Lukowicz, Niroshan Perera, Thomas von Büren, Gerhard Tröster, Thad Starner
Issue Date:October 2003
pp. 12
The paper deals with the design of a sound recognition system focused on an ultra low power hardware implementation in a button like miniature form factor. We present the results of the first design phase focused on selection and experimental evaluation of...
 
Kinetic Energy Powered Computing - an Experimental Feasibility Study
Found in: Wearable Computers, IEEE International Symposium
By Thomas von Büren, Paul Lukowicz, Gerhard Tröster
Issue Date:October 2003
pp. 22
Kinetic energy is an attractive energy source for low power wearable systems. Several kinetic energy micro generators have already been modeled and fabricated. However, they have not been evaluated in the context of typical wearable computing scenarios. Th...
 
AMON: A Wearable Medical Computer for High Risk Patients
Found in: Wearable Computers, IEEE International Symposium
By Paul Lukowicz, Urs Anliker, Jamie Ward, Gerhard Tröster, Etienne Hirt, Christopher Neufelt
Issue Date:October 2002
pp. 0133
No summary available.
   
The WearARM Modular, Low-Power Computing Core
Found in: IEEE Micro
By Paul Lukowicz, Urs Anliker, Gerhard Tröster, Steven J. Schwartz, Richard W. DeVaul
Issue Date:May 2001
pp. 16-28
The WearARM computing core for wearable applications uses highly miniaturized, mechanically flexible electronic packaging technology. Used with the MIThril platform, the system supports high-performance, low-power, user configurable wearable computing with...
 
Assessing the Cost Effectiveness of Integrated Passives
Found in: Design, Automation and Test in Europe Conference and Exhibition
By Michael Scheffler, Gerhard Tröster
Issue Date:March 2000
pp. 539
Passive components integrated into a high-density substrate can be a tolerable way to overcome the size and manufacturing limits of SMD passives mounted onto the system board. Still, this technology is perceived as being
 
Potentials of Chip-Package Co-Design for High-Speed Digital Applications
Found in: Design, Automation and Test in Europe Conference and Exhibition
By Gerhard Tröster
Issue Date:March 1999
pp. 423
No summary available.
 
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