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01.08.2014 | Ausgabe 7-8/2014

Annals of Telecommunications 7-8/2014

Efficient wet paper embedding for steganography with multilayer construction

Autoren:
Xinpeng Zhang, Chuan Qin, Liquan Shen

Abstract

This work proposes an efficient data hiding scheme for wet paper channel by using a multilayer construction, in which a number of node-bits in different layers are derived from all cover bits and used to carry the secret data. By applying the wet paper coding method to the node-bits and altering the changeable cover bits, the node-bits are modified into their desired values and the secret data are embedded in a layer-by-layer manner. An equilibration mechanism is also introduced to flip the denser changeable cover bits with higher probability. This way, paper folding method is equivalent to a special case of the proposed scheme, and a family of data hiding methods with more flexible relative payload and higher embedding efficiency can be generated.

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