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Z2Z4-Additive Perdect Codes in Steganography
Rifà Pous, Helena; Ronquillo, Lorena; Rifà, Josep
Steganography is an information hiding application which aims tohide secret data imperceptibly into a cover object. In this paper, we describe anovel coding method based on Z2Z4-additive codes in which data is embeddedby distorting each cover symbol by one unit at most (+-1-steganography). Thismethod is optimal and solves the problem encountered by the most e cientmethods known today, concerning the treatment of boundary values. Theperformance of this new technique is compared with that of the mentionedmethods and with the well-known rate-distortion upper bound to conclude thata higher payload can be obtained for a given distortion by using the proposedmethod.
Stegranography
data hiding
codes
codis
códigos
ocultación de datos
ocultació d'informació
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Article
ADVANCES IN MATHEMATICS OF COMMUNICATIONS
         

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