Alhussein Abouzeid Research:

Interests

Systems: Communication Networks; Wireless Ad Hoc and Sensor Networks; Peer-to-Peer Networks.

Applied Theory: Stochastic Processes; Algorithm and Protocol Complexity; Multi-layer Optimization; Information Theory; Queuing Theory.

Project "Image": Image Communication in Resource Constrained Networks

Wireless Visual Sensor Networks is a promising new type of sensor network in which nodes are equipped with cameras. It presents several challenges beyond those common to low data rate sensing, such as temperature or pressure. We develop several schemes which enable efficient image compression and transmission in wireless sensor networks. The first scheme addresses the problem of minimizing the energy dissipation for transmitting compressed images over a multi-hop network subject to a specific image quality constraint. The second scheme considers distributed image compression as a means to overcome the resource limitations of individual nodes by sharing the processing tasks. It has the additional benefit of extending the overall lifetime of the network by distributing the computation load among otherwise idle processors. Finally, the third scheme provides resiliency against packet losses in wireless networks by allowing nodes to perform “in-network” diversity combining. The schemes provide significant energy savings and improved image quality.

Presentations:

Key Publications:

H. Wu and A.A. Abouzeid, “Error Resilient Image Transport in Wireless Sensor Networks,” Computer Networks, vol. 50, no. 15, pp. 2873-2887, October 2006.

H. Wu and A.A. Abouzeid, “Energy Efficient Distributed Image Compression in Resource-Constrained Multihop Networks,” Computer Communications, vol. 28, no. 14, pp. 1658-1668, September 2005.

H. Wu and A.A. Abouzeid, “Error Robust Image Transport in Wireless Sensor Networks,” Proceedings of 5th Workshop on Applications and Services in Wireless Networks (ASWN 2005), Paris, France, June 29 – July 1, 2005.

H. Wu and A.A. Abouzeid, "Energy Efficient Distributed JPEG2000 Image Compression in Multihop Wireless Networks," Proceedings of the 4th Workshop on Applications and Services in Wireless Networks (ASWN 2004), pp. 152-160, Boston, Massachusetts, August 9-11, 2004.

H. Wu and A.A. Abouzeid, "Power Aware Image Transmission in Energy Constrained Wireless Networks," Proceedings of the 9th IEEE Symposium on Computers and Communications (ISCC 2004), vol. 1, pp. 202-207, Alexandria, Egypt, June 28- Jul 1, 2004.