Name
Abstract | ||
|---|---|---|
In multiview applications, multiple cameras acquire the same scene from different viewpoints and generally produce correlated video streams. This results in large amounts of highly redundant data. In order to save resources, it is critical to handle properly this correlation during encoding and transmission of the multiview data. In this work, we propose a correlation-aware packet scheduling algorithm for multi-camera networks, where information from all cameras are transmitted over a bottleneck channel to clients that reconstruct the multiview images. The scheduling algorithm relies on a new rate-distortion model that captures the importance of each view in the scene reconstruction. We propose a problem formulation for the optimization of the packet scheduling policies, which adapt to variations in the scene content. Then, we design a low complexity scheduling algorithm based on a trellis search that selects the subset of candidate packets to be transmitted towards effective multiview reconstruction at clients. Extensive simulation results confirm the gain of our scheduling algorithm when inter-source correlation information is used in the scheduler, compared to scheduling policies with no information about the correlation or non-adaptive scheduling policies. We finally show that increasing the optimization horizon in the packet scheduling algorithm improves the transmission performance, especially in scenarios where the level of correlation rapidly varies with time. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/TMM.2013.2291531 | Multimedia, IEEE Transactions |
Keywords | Field | DocType |
rate distortion theory,scheduling,search problems,video streaming,bottleneck channel,correlated video streams,correlation-aware packet scheduling,encoding,inter-source correlation information,low complexity scheduling algorithm,multicamera networks,multiview applications,multiview data,multiview images,multiview reconstruction,nonadaptive scheduling policies,packet scheduling policies,rate-distortion model,scene content,scene reconstruction,transmission performance,trellis search,Foresighted packet scheduling,interview correlation,multimedia communication,multiview streaming,rate-distortion optimization,source correlation analysis | Lottery scheduling,Fair-share scheduling,Computer science,Two-level scheduling,Real-time computing,Genetic algorithm scheduling,Least slack time scheduling,Rate-monotonic scheduling,Dynamic priority scheduling,Round-robin scheduling | Journal |
Volume | Issue | ISSN |
16 | 2 | 1520-9210 |
Citations | PageRank | References |
6 | 0.46 | 29 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Laura Toni | 1 | 186 | 15.22 |
| Thomas Maugey | 2 | 271 | 31.16 |
| Pascal Frossard | 3 | 3015 | 230.41 |