Extrinsic distortion based source-channel allocation for wireless JPEG2000 transcoding systems

In this paper, we propose an extrinsic distortion-based source-channel allocation for JPWL transcoding systems. The distortion based approach is possible thanks to the extrinsic distortion estimation using information contained in the compressed bitstream. The proposed estimation method gives a coarse grain estimator of the true distortion, but keeping the same relative order of magnitude for distortion. Although coarse, this estimation can be used efficiently in a distortion based source-channel allocation strategy. Simulation results are provided in the context of JPEG2000 bitstream wireless transmissions using JPWL tools.