Computer generated correlation holograms

David Abookasis, Joseph Rosen

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations


A new method of synthesizing computer generated holograms has been developed and experimentally tested. The method has been implemented by an iterative optimization algorithm on a joint transform correlator. The proposed hologram is a combination of two separated sub-holograms, and its reconstructed image is obtained as a result of a spatial correlation between the hologram's two parts. The double-holograms are displayed on the correlator input plane illuminated by a plane wave. Consequently, a desired image is constructed on part of the correlator output plane. The above method has been extended for deciphering watermarks, and other hidden information, from printed images. A spatial correlation between two conealograms; one containing the watermark and the other containing the deciphering key, reveals the concealed watermark from the printed picture, only when the two specific holograms are matched. Both simulation and experimental results are presented.

Original languageEnglish
Number of pages4
StatePublished - 1 Dec 2004
Event2004 23rd IEEE Convention of Electrical and Electronics Engineers in Israel, Proceedings - Tel-Aviv, Israel
Duration: 6 Sep 20047 Sep 2004


Conference2004 23rd IEEE Convention of Electrical and Electronics Engineers in Israel, Proceedings

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials


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