Z<inf>2</inf>Z<inf>4</inf>-additive perfect codes in steganography

Helena Rifà-Pous, Josep Rifà, Lorena Ronquillo

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)


Steganography is an information hiding application which aims to hide secret data imperceptibly into a cover object. In this paper, we describe a novel coding method based on Z2Z4-additive codes in which data is embedded by distorting each cover symbol by one unit at most (±1-steganography). This method is optimal and solves the problem encountered by the most efficient methods known today, concerning the treatment of boundary values. The performance of this new technique is compared with that of the mentioned methods and with the well-known rate-distortion upper bound to conclude that a higher payload can be obtained for a given distortion by using the proposed method. © 2011 AIMS-SDU.
Original languageEnglish
Pages (from-to)425-433
JournalAdvances in Mathematics of Communications
Publication statusPublished - 1 Aug 2011


  • Steganography
  • Z Z -additive perfect codes 2 4


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