Real-time content analysis and adaptive transmission of lecture videos for mobile applications
Proceedings of the 12th annual ACM international conference on Multimedia
Content-adaptive transmission of reconstructed soccer goal events over low bandwidth networks
Proceedings of the 13th annual ACM international conference on Multimedia
Content-adaptive wireless streaming of instructional videos
Multimedia Tools and Applications
Functionally Layered Video Coding for Water Level Monitoring
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Scalable coding and wireless streaming of lecture videos for mobile learning
Advanced Technology for Learning
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
| Hi-index | 0.00 |
Traditional scalable video encoders sacrifice coding efficiency to reduce error propagation because they have avoided using enhancement-layer (EL) information to predict the base layer (BL) to prevent the error propagation termed "drift". Drift can produce very poor video quality if left unchecked. We propose a video coder with significantly better compression efficiency because it intentionally allows the drift produced by predicting the BL from the EL. Our drift management system balances the tradeoff between compression efficiency and error propagation. The proposed scalable coder uses a spatially adaptive procedure that optimally selects key encoder parameters: the quantizer and the prediction strategy. Our numerical results indicate the encoder is very powerful, and the selection procedure is effective. The video quality of our coder at low rates is only marginally worse than the drift-free case, while its overall compression efficiency is not much worse than a one-layer nonscalable encoder.