On active contour models and balloons
CVGIP: Image Understanding
A scalable location service for geographic ad hoc routing
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
GPSR: greedy perimeter stateless routing for wireless networks
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
TAG: a Tiny AGgregation service for ad-hoc sensor networks
ACM SIGOPS Operating Systems Review - OSDI '02: Proceedings of the 5th symposium on Operating systems design and implementation
Peer-to-Peer Spatial Queries in Sensor Networks
P2P '03 Proceedings of the 3rd International Conference on Peer-to-Peer Computing
TOSSIM: accurate and scalable simulation of entire TinyOS applications
Proceedings of the 1st international conference on Embedded networked sensor systems
IEEE Transactions on Computers
Time synchronization in wireless sensor networks
Time synchronization in wireless sensor networks
Supporting spatial aggregation in sensor network databases
Proceedings of the 12th annual ACM international workshop on Geographic information systems
In-network surface simplification for sensor fields
Proceedings of the 13th annual ACM international workshop on Geographic information systems
Monitoring dynamic spatial fields using responsive geosensor networks
Proceedings of the 13th annual ACM international workshop on Geographic information systems
Ef.cient Continuous Mapping in Sensor Networks Using Isolines
MOBIQUITOUS '05 Proceedings of the The Second Annual International Conference on Mobile and Ubiquitous Systems: Networking and Services
Contour map matching for event detection in sensor networks
Proceedings of the 2006 ACM SIGMOD international conference on Management of data
Constraint chaining: on energy-efficient continuous monitoring in sensor networks
Proceedings of the 2006 ACM SIGMOD international conference on Management of data
Efficient In-Network Moving Object Tracking in Wireless Sensor Networks
IEEE Transactions on Mobile Computing
Approximate isocontours and spatial summaries for sensor networks
Proceedings of the 6th international conference on Information processing in sensor networks
Geographic routing made practical
NSDI'05 Proceedings of the 2nd conference on Symposium on Networked Systems Design & Implementation - Volume 2
Iso-Map: Energy-Efficient Contour Mapping in Wireless Sensor Networks
ICDCS '07 Proceedings of the 27th International Conference on Distributed Computing Systems
Detecting Topological Change Using a Wireless Sensor Network
GIScience '08 Proceedings of the 5th international conference on Geographic Information Science
Tracking deformable 2D objects in wireless sensor networks
Proceedings of the 16th ACM SIGSPATIAL international conference on Advances in geographic information systems
Event-based topology for dynamic planar areal objects
International Journal of Geographical Information Science
Beyond average: toward sophisticated sensing with queries
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Boundary estimation in sensor networks: theory and methods
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Snakes, shapes, and gradient vector flow
IEEE Transactions on Image Processing
COSIT'11 Proceedings of the 10th international conference on Spatial information theory
A unified framework for decentralized reasoning about gradual changes in topological relations
Proceedings of the 19th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
Pattern-based event detection in sensor networks
Distributed and Parallel Databases
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Wireless sensor networks (WSN) are deployed to detect, monitor and track environmental phenomena such as toxic clouds or dense areas of air pollution in an urban environment. Most phenomena are often modeled as 2D objects (e.g., a fire region based on the temperature sensor readings). People model the objects by their properties, and like to know how the properties change over time. This paper presents a distributed algorithm, which uses deformable curves to track the spatiotemporal changes of 2D objects. In order to save the constrained resources in WSN, our distributed algorithm only allows neighboring nodes to exchange messages to maintain the curve structures. In addition, our algorithm can also support tracking of multiple objects. Based on the in-network tracking of deformable 2D curves, we show that many spatiotemporal properties can be extracted by the in-network aggregation. Our experimental results have confirmed that our approach is resource-efficient with regard to the in-network communication and on-board computation.