Optical Review

, Volume 8, Issue 6, pp 413–415

Fourier-plane encryption technique based on removing the effect of phase terms in a joint transform correlator

  • Se-Joon Park
  • Jong-Yun Kim
  • Jang-Keun Bae
  • Soo-Joong Kim
Letter Information optic

Abstract

We propose a Fourier-plane encryption technique based on a joint transform correlator (JTC). The technique is based on removing the effect of phase terms in JTC and the auto-correlation terms contribute to reconstructing the original image. Computer simulations and optical experiments show the proposed method is very useful for JTC architecture.

Key words

optical security system optical encryption joint transform correlator spatial light modulator square lawdevice computer generated hologram 

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Copyright information

© The Optical Society of Japan 2001

Authors and Affiliations

  • Se-Joon Park
    • 1
  • Jong-Yun Kim
    • 2
  • Jang-Keun Bae
    • 3
  • Soo-Joong Kim
    • 1
  1. 1.Department of Electronic EngineeringKyungpook National UniversityTaeguKorea
  2. 2.School of Information Technology EngineeringKyungdong UniversitySokchoKorea
  3. 3.Department of electronic InformationKumi CollegeKyungpookKorea

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