Holographic security system based on image domain joint transform correlator

Michael Borisov; Sergey B. Odinokov; Leonid A. Bondarev; Sergey V. Kurakin; Sergey V. Matveyev; V. S. Belyaev

doi:10.1117/12.462733

19 April 2002 Holographic security system based on image domain joint transform correlator

Michael Borisov, Sergey B. Odinokov, Leonid A. Bondarev, Sergey V. Kurakin, Sergey V. Matveyev, V. S. Belyaev

Proceedings Volume 4677, Optical Security and Counterfeit Deterrence Techniques IV; (2002) https://doi.org/10.1117/12.462733
Event: Electronic Imaging, 2002, San Jose, California, United States

Abstract

We describe holographic security system providing machine reading of the holographic information and matching it with the reference one by optical means. The security holographic mark includes several test holograms and should be applied to a carrier: ID-card, paper seal etc. Each of the holograms stores a part of entire image, stored in the reference hologram. Image domain JTC is used to match the images retrieved from the holograms. Being recorded and retrieved, the images provides correlation peaks with special positions, with a strict dependence on the tested and reference holograms mutual shifts. The system proposed works like usual JTC with a few useful differences. The image domain recognizing is a result of Fresnel holographic technique of the images recording. It provides more effective usage of the light addressed SLM (LASLM) work pupil and resolution in more simple and compact device. Few correlation peaks enhances the device recognizing probability. We describe the real-time experimental arrangement based on LASLM. The experimental results are in a good correspondence with computer simulations. We also show in practice that good results may be obtained while using the image domain JTC technique in despite of the low LASLM resolution and the device compact size.

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Michael Borisov, Sergey B. Odinokov, Leonid A. Bondarev, Sergey V. Kurakin, Sergey V. Matveyev, and V. S. Belyaev "Holographic security system based on image domain joint transform correlator", Proc. SPIE 4677, Optical Security and Counterfeit Deterrence Techniques IV, (19 April 2002); https://doi.org/10.1117/12.462733

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KEYWORDS

Holograms

Holography

Fourier transforms

Information security

Optical correlators

Spatial frequencies

Image retrieval

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