Error concealment using a DVC approach for video streaming applications

In this paper we consider an error resilience scheme, based on a Distributed Video Coding (DVC) paradigm, for the transmission of coded video over an error prone channel. In the proposed scheme, an auxiliary stream which contains generalized parity bits is generated for each coded frame. At the decoder side, error concealed decoded frames are used as side information to feed a Wyner-Ziv turbo decoder. We use an extended version of the Recursive Optimal per-Pixel Estimate (ROPE) algorithm to establish how many parity bits should be sent to the turbo decoder in order to correct the decoded and concealed frame. To validate the proposed scheme, tests with video sequences and realistic loss patterns are reported.