True Multi-Image Alignment and Its Application to Mosaicing and Lens Distortion Correction
IEEE Transactions on Pattern Analysis and Machine Intelligence
Wireless integrated network sensors
Communications of the ACM
Connecting the Physical World with Pervasive Networks
IEEE Pervasive Computing
The Impact of Data Aggregation in Wireless Sensor Networks
ICDCSW '02 Proceedings of the 22nd International Conference on Distributed Computing Systems
Wireless Sensor Networks: An Information Processing Approach
Wireless Sensor Networks: An Information Processing Approach
Medians and beyond: new aggregation techniques for sensor networks
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Synopsis diffusion for robust aggregation in sensor networks
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Using mobile relays to prolong the lifetime of wireless sensor networks
Proceedings of the 11th annual international conference on Mobile computing and networking
SensEye: a multi-tier camera sensor network
Proceedings of the 13th annual ACM international conference on Multimedia
Power aware image transmission in energy constrained wireless networks
ISCC '04 Proceedings of the Ninth International Symposium on Computers and Communications 2004 Volume 2 (ISCC"04) - Volume 02
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
Image and video coding-emerging standards and beyond
IEEE Transactions on Circuits and Systems for Video Technology
Wireless image sensor networks: event acquisition in attack-prone and uncertain environments
Multidimensional Systems and Signal Processing
Wireless sensor networks scheduling for full angle coverage
Multidimensional Systems and Signal Processing
Source localization using a sparse representation framework to achieve superresolution
Multidimensional Systems and Signal Processing
Video sensors integration in a C2I system
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
Acoustic sensor-based multiple object tracking with visual information association
EURASIP Journal on Advances in Signal Processing
Low-complexity video coding via power-rate-distortion optimization
Journal of Visual Communication and Image Representation
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In a tracking system, an object of interest is monitored continuously in a sensor network. Information about the object is kept in the sensors and sensors transmit the information upon request. In this paper, we consider the scenario where all sensors around a targeted object capture images of it and these pictures will be sent to a mobile agent upon request. Due to the size and energy limitations in sensors, images kept in sensors are often small and highly compressed. We describe a framework to facilitate a mobile agent in the sensor network to request images of the object of interest. As sensors are limited in energy, it is desirable to reduce the energy used in transmitting the images. We observe that, in a sensor network that is sufficiently dense, images from neighbor cameras would likely overlap, and therefore intermediate sensors can process and combine overlapping portions so as to reduce the energy spent on image transmission. We develop a protocol for involved sensors to determine how to transmit the images they have kept to the mobile agent in an energy efficient manner. Our protocol is truly distributed and does not require any global information. We evaluate our protocol through extensive simulations.