The active badge location system
ACM Transactions on Information Systems (TOIS)
Computer graphics (2nd ed. in C): principles and practice
Computer graphics (2nd ed. in C): principles and practice
The Cricket location-support system
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
LANDMARC: Indoor Location Sensing Using Active RFID
PERCOM '03 Proceedings of the First IEEE International Conference on Pervasive Computing and Communications
An Introduction to RFID Technology
IEEE Pervasive Computing
A service-based infrastructure for advanced logistics
2nd international workshop on Service oriented software engineering: in conjunction with the 6th ESEC/FSE joint meeting
A pervasive computing system for the operating room of the future
Mobile Networks and Applications
Design and Implementation of a Dual-Camera Wireless Sensor Network for Object Retrieval
IPSN '08 Proceedings of the 7th international conference on Information processing in sensor networks
RFID-based networks: exploiting diversity and redundancy
ACM SIGMOBILE Mobile Computing and Communications Review
Sherlock: automatically locating objects for humans
Proceedings of the 6th international conference on Mobile systems, applications, and services
SixthSense: RFID-based Enterprise Intelligence
Proceedings of the 6th international conference on Mobile systems, applications, and services
MAX: Wide area human-centric search of the physical world
ACM Transactions on Sensor Networks (TOSN)
Autonomous navigation of mobile agents using RFID-enabled space partitions
Proceedings of the 16th ACM SIGSPATIAL international conference on Advances in geographic information systems
Longitudinal study of a building-scale RFID ecosystem
Proceedings of the 7th international conference on Mobile systems, applications, and services
SEVA: Sensor-enhanced video annotation
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Modeling RFID signal strength and tag detection for localization and mapping
ICRA'09 Proceedings of the 2009 IEEE international conference on Robotics and Automation
A fuzzy logic approach to passive RFID for mobile robot applications
IROS'09 Proceedings of the 2009 IEEE/RSJ international conference on Intelligent robots and systems
Assessing and optimizing the range of UHF RFID to enable real-world pervasive computing applications
PERVASIVE'07 Proceedings of the 5th international conference on Pervasive computing
Object localization using RFID
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
Gesture recognition using RFID technology
Personal and Ubiquitous Computing
HiFi: hide and find digital content associated with physical objects via coded light
Proceedings of the 15th Workshop on Mobile Computing Systems and Applications
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The pervasive nature of multimedia recording devices enables novel pervasive multimedia applications with automatic, inexpensive, and ubiquitous identification and locationing abilities. We present the design and implementation of Ferret, a scalable system for locating nomadic objects augmented with RFID tags and displaying them to a user in real-time. We present two alternative algorithms for refining a postulation of an object's location using a stream of noisy readings from an RFID reader: an online algorithm for real-time use on a mobile device, and an offline algorithm for use in post-processing applications. We also present methods for detecting when nomadic objects move and how to reset the algorithms to restart the refinement process. An experimental evaluation of the Ferret prototype shows that (i) Ferret can refine object locations to only 1% of the reader's coverage region in less than 2 minutes with small error rate (2.22%); (ii) Ferret can detect nomadic objects with 100% accuracy when the nomadic distances exceed 20cm; and (iii) Ferret works with a variety of user mobility patterns.