[Legacy Report] Seminar: Efficient Data Hiding with Multi-layer Construction

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A data-hider always hopes to lower the distortion caused by data hiding or to maximize the embedded
payload with a given distortion level, in other words, to achieve a good “rate-distortion” performance.
This talk will introduce several recent efficient data-hiding schemes based on multi-layer construction.
Firstly, by exploiting Wet Paper codes and Hamming codes, a family of data-hiding methods can be
derived from an existing binary embedding method. If the binary embedding method is near optimal, the
performance of the derived methods will still stay rather close to the performance bound of binary
embedding with arbitrarily small embedding rates. Secondly, after performing the binary embedding in
LSB of cover samples, we can embed some additional secret data into the second LSB by increasing or
decreasing the cover samples by one. When the performance of the binary embedding method in LSB
achieves the performance limit, the performance of the double-layered scheme can also achieve the
upper bound of ±1 embedding. Thirdly, if the allowable modification range on cover samples is [-2, +2],
the LSB, second LSB and third LSB of cover samples can be controlled to carry the secret data by using
a triple-layered construction. It is also shown the rate-distortion performance of the triple-layered
method approaches the theoretical limit of ±2 embedding.

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