Ghassan Alregib, Ph.D.

Assistant Professor, Electrical and Computer Engineering
Contact
Office: PARB A216
Phone: 912-966-7937
Email: ga42@mail.gatech.edu
Research Thrusts
Digital Signal Processing
Telecommunications
Links
Education
Ph.D., Georgia Institute of Technology, 2003
M.S., King Fahd University of Petroleum and Minerals, 1998
B.S.E.E., King Fahd University of Petroleum and Minerals, 1997
Research Interests
  • Image and video coding and processing
  • Multimedia communications and networking
  • Multimedia security
  • Continuous media distribution services
  • Wireless sensor networks
  • Collaborative systems
  • Multi-Array Imaging

Dr. Alregib and his research group work in several research areas related to multimedia processing and networking and wireless sensor networks. Wireless sensor networks have unique characteristics such as random deployment and limited energy resources that require special signal processing and communications algorithms. Dr. Alregib’s research is focused on developing distributed signal processing algorithms such as parameter estimation and detection as well as cross-layer communications protocols that take advantage of the ad-hoc nature of sensor networks. This work has applications in various fields such as disaster assessment, surveillance, battlefields, and environmental modeling.

In collaborative systems, Dr. Alregib together with colleagues from other institutes are developing a rehabilitation system that helps after-stroke patients to regain control of their hands and arms. The system also provides physical therapists with a tool to observe patients remotely (e.g., over the Internet) with a complete statistical history of the patient’s recovery improvement. The major component of the system is a technology developed by Dr. AlRegib and his colleagues and called micro-kinematics in shared spaces. The system has applications in other areas such as science teaching and 3D manuals.

In multimedia and immersive communications, Dr. Alregib is collaborating with colleagues at several institutes and corporations to develop compression and streaming algorithms for multimedia objects over best-effort networks such as the Internet: the emphasis is on video and 3D objects that require large bandwidth. The group achieved considerable bit-rate improvement on H.264 video sequences and the developed algorithms are proposed to the standards committees. The group has also achieved several advances in streaming shared spaces over the Internet with the minimum delay to support full interactivity. Several of these algorithms are employed in a mobile networked video game at Georgia Tech. Moreover, Dr. Alregib and his research group are collaborating with a major corporation to build advanced videoconferencing system using multi-array imaging. The current system captures and streams high-resolution video of 32'-by-8' area in real time. This system is currently employed in an experimental classroom for distant learning.

Dr. Alregib was the recipient of the Outstanding Graduate Teaching Award in 2000-2001 at the School of Electrical and Computer Engineering at Georgia Tech, the Center for Signal and Image Processing Research Award in spring 2003 at Georgia Tech, and the Center for Signal and Image Processing Service Award in spring 2003 at Georgia Tech. Dr. Alregib is the General Chair of the First International Conference on Immersive Telecommunications (IMMERSCOM), Italy, October 10-12, 2007. He is also the Chair of the Special Sessions Program at the IEEE International Conference on Image Processing 2006 in Atlanta, GA. He also serves as Associate Editor of the IEEE Signal Processing Magazine 2006-2007.Dr. Alregib is the Chair of the Immersive Communications Technical and Business Unit at ICST.