A redundant frame strategy towards error robustness for the H. 264-based scalable video coding systems

In this paper, a redundant frame strategy is introduced for the Scalable Video Coding (SVC) systems. The proposed algorithm aims to provide error robustness for key frames transmitted in unreliable channels and error concealment at the decoder side. The technique employs correlated frames, the resultant pictures constructed from successive key frames. By transmitting additional bit overhead, the error-protection for the channel transmission is achieved. The performance of the algorithm is examined extensively with various objective and subjective evaluations in both error-free and error-prone environments. The simulation results show that the correlated frame can be used to recover the lost key frame, which prevents error propagation to surrounding non-key pictures.