Abstract
Real time delivery of video over best-effort networks requires compression systems that dynamically adapt the rate to the available channel capacity and exhibit robustness to data loss as retransmission is often impractical. Error-resilience, however, significantly lowers the coding performance when rigid design is performed based on a worst-case scenario. This paper presents an original scalable video coding scheme that couples the compression efficiency of the open-loop architecture with the robustness of multiple description source coding. The use of embedded multiple description quantization and a novel channel-aware rate-allocation allow for shaping on-the-fly the output bit-rate and the degree of resilience. As a result, robustness to data losses is traded for better visual quality when transmission occurs over reliable channels, while error-resilience is introduced when noisy links are involved. The advantage of our proposal is demonstrated in the context of packet-lossy networks.
Original language | English |
---|---|
Pages | 3181-3184 |
DOIs | |
Publication status | Published - Sept 2005 |
Event | IEEE International Conference on Image Processing (2005) - Genoa , Italy Duration: 19 Sept 2005 → 19 Sept 2005 |
Conference
Conference | IEEE International Conference on Image Processing (2005) |
---|---|
Country/Territory | Italy |
City | Genoa |
Period | 19/09/05 → 19/09/05 |
Keywords
- video coding
- scalar quantizers
- motion compensated temporal filtering