Digital watermarking scheme exploiting nondeterministic dependence for image authentication

Chang Tsun Li, Yinyin Yuan

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)

    Abstract

    Watermarking schemes for authentication purposes are characterized by three factors: security, resolution of tamper localization, and embedding distortion. Since the requirements of high secudty, high localization resolution, and low distortion cannot be fulfilled simultaneously, the relative importance of a particular factor is application-dependent. Moreover, blockwise dependence is recognized as a key requirement for fragile watermarking schemes to thwart the Holliman-Memon counterfeiting attack. However, it has also been observed that deterministic dependence is still susceptible to transplantation attack or even simple cover-up attack. This work proposes a fragile watermarking scheme for image authentication, which exploits nondeterministic dependence and provides the users with freedom of making trade-offs among the three factors according to the needs of their applications.

    Original languageEnglish
    Article number127001
    JournalOptical Engineering
    Volume45
    Issue number12
    DOIs
    Publication statusPublished - Dec 2006

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