An Error-Resilient Algorithm Based on Partitioning of the Wavelet Transform Coefficients for a DIRAC Video Codec

摘要

Video transmission over the wireless or wired network require protection from channel errors since compressed video streams are very sensitive to transmission errors because of the use of predictive coding and variable length coding. In this paper, we propose a method to achieve robustness to transmission errors to the compressed bit-stream of wavelet based open source video codec, Dirac. By partitioning the wavelet transform coefficients into groups and independently processing each group using arithmetic and Turbo coding, we could achieve the robustness to transmission errors of the compressed video stream in the packet erasure wired network. Simulation results show that the proposed technique can achieve up to 5dB PSNR gain over the un-partitioning method.