Osama Al-Shaykh

Video compression using matching pursuits

The use of matching pursuit (MP) to code video using overcomplete Gabor basis functions has recently been introduced. In this paper, we propose new functionalities such as SNR scalability and arbitrary shape coding for video coding based on matching pursuit. We improve the performance of the baseline algorithm presented earlier by proposing a new search and a new position coding technique. The resulting algorithm is compared to the earlier one and to DCT-based coding.

Robust image compression with packetization: the MPEG-4 still texture case

In this paper, we propose a bit-stream packetization approach to make the MPEG-4 still texture bit-stream robust to channel degradation. Our approach does not affect the spatial/quality scalability features of the still texture algorithm, and it has limited effect on coding efficiency. Also, this packetization approach requires minimal changes to the syntax and a small overhead. Finally, the proposed technique is shown to provide good error robustness over a wide range of error conditions.