Reversible watermarking scheme with image-independent embedding capacity

C. T. Li

    Research output: Contribution to journalArticlepeer-review

    13 Citations (Scopus)


    Permanent distortion is one of the main drawbacks of all the irreversible watermarking schemes. Attempts to recover the original signal after the signal passing the authentication process are being made starting just a few years ago. Some common problems, such as salt-and-pepper artefacts owing to intensity wraparound and low embedding capacity, can now be resolved. However, some significant problems remain unsolved. First, the embedding capacity is signal-dependent, i.e., capacity varies significantly depending on the nature of the host signal. The direct impact of this is compromised security for signals with low capacity. Some signals may be even non-embeddable. Secondly, while seriously tackled in irreversible watermarking schemes, the well-known problem of block-wise dependence, which opens a security gap for the vector quantisation attack and transplantation attack, are not addressed by researchers of the reversible schemes. This work proposes a reversible watermarking scheme with near-constant signal-independent embedding capacity and immunity to the vector quantisation attack and transplantation attack.

    Original languageEnglish
    Pages (from-to)779-786
    Number of pages8
    JournalIEE Proceedings: Vision, Image and Signal Processing
    Issue number6
    Publication statusPublished - Dec 2005


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