Abstract :
This work studies reversible information embedding, where a compressed host data is available, before transmission, at the decoder. The problem is solved for a (fixed) degraded broadcast attack channel, which corresponds to the scenario where the stegotext is subject to several stages of attack. A single letter characterization of the region of all achievable rate-distortion quadruples (Ry, Rz , Rd, D) is given, where Ry, Rz are the embedding rates, Rd is the rate limit of the compressed host at the decoders, and D is the average distortion between the host and the data set (stegotext)
Keywords :
broadcast channels; data compression; decoding; watermarking; average distortion; embedding rates; fixed degraded broadcast attack channel; host data compression; rate limit; rate-distortion quadruples; reversible information embedding; single letter characterization; stegotext data set; Broadcasting; Data encapsulation; Decoding; Degradation; Distortion measurement; Rate-distortion; Signal processing; Signal restoration; Terminology; Watermarking; Data hiding; information Embedding; reversible information embedding; side information; watermarking;
