Correlation-based watermarking by a digital holographic technique

Chau Jern Cheng, Li Chien Lin

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)


    We propose and demonstrate an optical watermarking scheme using a digital holographic technique. The holographic watermark is constructed by an off-axis diffuse-type hologram and embedded into a cover image with appropriate weighting. Detection of the hidden mark is optically implemented using a VanderLugt correlator with the watermarked matched filter. Detected correlation is spatially separable and avoids interference from the cover image.

    Original languageEnglish
    Pages (from-to)1-2
    Number of pages2
    JournalOptical Engineering
    Issue number1
    Publication statusPublished - 2005 Jan


    • Digital holography
    • Optical correlators
    • Watermarking

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Engineering(all)

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