Correlation-based watermarking by a digital holographic technique

Chau Jern Cheng*, Li Chien Lin

*Corresponding author for this work

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
Externally publishedYes


  • Digital holography
  • Optical correlators
  • Watermarking

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Engineering


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