Results 1 - 10 of 2,049

A Conceptual Framework and a Toolkit for Supporting the Rapid Prototyping of Context-Aware Applications

by Anind K. Dey, Gregory D. Abowd, Daniel Salber , 2001
"... Computing devices and applications are now used beyond the desktop, in diverse environments, and this trend toward ubiquitous computing is accelerating. One challenge that remains in this emerging research field is the ability to enhance the behavior of any application by informing it of the context ..."
Abstract - Cited by 891 (28 self) - Add to MetaCart
Computing devices and applications are now used beyond the desktop, in diverse environments, and this trend toward ubiquitous computing is accelerating. One challenge that remains in this emerging research field is the ability to enhance the behavior of any application by informing

Robotics-Based Location Sensing Using Wireless Ethernet

by Andrew M. Ladd, Kostas E. Bekris, Algis Rudys, Lydia E. Kavraki, Dan S. Wallach - Wireless Networks , 2005
"... A key subproblem in the construction of location-aware systems is the determination of the position of a mobile device. This article describes the design, implementation and analysis of a system for determining position inside a building from measured RF signal strengths of packets on an IEEE 802.11 ..."
Abstract - Cited by 241 (5 self) - Add to MetaCart
.11b wireless Ethernet network. Previous approaches to location-awareness with RF signals have been severely hampered by non-Gaussian signals, noise, and complex correlations due to multi-path effects, interference and absorption. The design of our system begins with the observation that determining

On the Feasibility of Using Wireless Ethernet for Indoor Localization

by A. Ladd, ..., Kostas E. Bekris, Algis P. Rudys, Dan S. Wallach, Lydia E. Kavraki - IEEE Transactions on Robotics and Automation , 2004
"... IEEE802.11b wireless Ethernet isbu19803 the standard for indoor wireless communication. This paper proposes the use of measured signal strength of Ethernet packets as a sensor for a localization system. We demonstrate that off-the-shelf hardware can accuratelyb used for location sensing and rea ..."
Abstract - Cited by 59 (2 self) - Add to MetaCart
IEEE802.11b wireless Ethernet isbu19803 the standard for indoor wireless communication. This paper proposes the use of measured signal strength of Ethernet packets as a sensor for a localization system. We demonstrate that off-the-shelf hardware can accuratelyb used for location sensing

Bayesian indoor positioning systems

by Eiman Elnahrawy, Richard P. Martin, Wen-hua Ju, P. Krishnan, David Madigan - In Infocom , 2005
"... Abstract — In this paper, we introduce a new approach to location estimation where, instead of locating a single client, we simultaneously locate a set of wireless clients. We present a Bayesian hierarchical model for indoor location estimation in wireless networks. We demonstrate that our model ach ..."
Abstract - Cited by 99 (15 self) - Add to MetaCart
Abstract — In this paper, we introduce a new approach to location estimation where, instead of locating a single client, we simultaneously locate a set of wireless clients. We present a Bayesian hierarchical model for indoor location estimation in wireless networks. We demonstrate that our model

A System for Video Surveillance and Monitoring

by Robert T. Collins, Alan J. Lipton, Takeo Kanade, Hironobu Fujiyoshi, David Duggins, Yanghai Tsin, David Tolliver, Nobuyoshi Enomoto, Osamu Hasegawa, Peter Burt, Lambert Wixson , 2000
"... Under the three-year Video Surveillance and Monitoring (VSAM) project (1997--1999), the Robotics Institute at Carnegie Mellon University (CMU) and the Sarnoff Corporation developed a system for autonomous Video Surveillance and Monitoring. The technical approach uses multiple, cooperative video s ..."
Abstract - Cited by 226 (1 self) - Add to MetaCart
Under the three-year Video Surveillance and Monitoring (VSAM) project (1997--1999), the Robotics Institute at Carnegie Mellon University (CMU) and the Sarnoff Corporation developed a system for autonomous Video Surveillance and Monitoring. The technical approach uses multiple, cooperative video

Zero-Configuration, Robust Indoor Localization: Theory and Experimentation

by Hyuk Lim, Lu-chuan Kung, Jennifer C. Hou, Haiyun Luo
"... With the technical advances in ubiquitous computing and wireless networking, there has been an increasing need to capture the context information (such as the location) and to figure it into applications. In this paper, we establish the theoretical base and develop a localization algorithm for buil ..."
Abstract - Cited by 69 (0 self) - Add to MetaCart
With the technical advances in ubiquitous computing and wireless networking, there has been an increasing need to capture the context information (such as the location) and to figure it into applications. In this paper, we establish the theoretical base and develop a localization algorithm

The cricket indoor location system

by Nissanka Bodhi Priyantha , 2005
"... Indoor environments present opportunities for a rich set of location-aware applications such as navigation tools for humans and robots, interactive virtual games, resource discovery, asset tracking, location-aware sensor networking etc. Typical indoor applications require better accuracy than what c ..."
Abstract - Cited by 72 (0 self) - Add to MetaCart
Indoor environments present opportunities for a rich set of location-aware applications such as navigation tools for humans and robots, interactive virtual games, resource discovery, asset tracking, location-aware sensor networking etc. Typical indoor applications require better accuracy than what

Indoor Localization using Place and Motion Signatures

by Seth Teller , 2013
"... Most current methods for 802.11-based indoor localization depend on either simple radio propagation models or exhaustive, costly surveys conducted by skilled technicians. These methods are not satisfactory for long-term, large-scale positioning of mobile devices in practice. This thesis describes tw ..."
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two approaches to the indoor localization problem, which we formulate as discovering user locations using place and motion signatures. The first approach, organic indoor localization, combines the idea of crowdsourcing, encouraging end-users to contribute place signatures (location RF fingerprints

Services for Indoor Use

by Krzysztof W. Kolodziej, Krzysztof W. Kolodziej, Mass-achuses Instite, Heifli Nepf, Krzysztof W. Kolodziej , 2004
"... Certified by................................C e rtifi e d b y...........................................................J r m o n n r.....................Jerm onnorJhesis Reader Professor of Ci- ^ Accepted by................................................. GrdaeSuet ..."
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Certified by................................C e rtifi e d b y...........................................................J r m o n n r.....................Jerm onnorJhesis Reader Professor of Ci- ^ Accepted by................................................. GrdaeSuet

Robust Indoor Location Estimation of Stationary and Mobile Users

by Youngjune Gwon, et al. , 2004
"... We present algorithms for estimating the location of stationary and mobile users based on heterogeneous indoor RF technologies. We propose two location algorithms, Selective Fusion Location Estimation (SELFLOC) and Region of Confidence (RoC), which can be used in conjunction with classical location ..."
Abstract - Cited by 49 (1 self) - Add to MetaCart
We present algorithms for estimating the location of stationary and mobile users based on heterogeneous indoor RF technologies. We propose two location algorithms, Selective Fusion Location Estimation (SELFLOC) and Region of Confidence (RoC), which can be used in conjunction with classical location
Results 1 - 10 of 2,049