| Staff position | Emeritus Professor |
| E-mail | ghan (non Essex users should add @essex.ac.uk) |
| Telephone | 2434 (non Essex users should add 01206-87 to the beginning of this number) |
| Room | 1NW.3.25 |
| Website | http://privatewww.essex.ac.uk/~ghan/ |
| Research interests |
- Video/Image compression
- motion estimation
- image/video segmentation
- image retrieval and image/video watermarking
- object tracking
- Video Networking
- video transcoding
- video quality metrics
- IPTV
- video coding for IP and wireless networks
- multimedia communication networks
- joint-source channel coding
- Congestion control
- overlay networks
- ad-hoc networks
- end-to-end quality of service
- network services
- peer-to-peer networking
- cross-layer optimisation
- flow/congestion control in IP networks
- network performance management
- Educational technology
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