Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
권호 표지
DOI QR코드

DOI QR Code

Optical image encryption by use of double random phase mask and analysis of its encryption level

이중 임의 위상판을 이용한 광학상의 암호화 및 암호화 수준 분석

  • Published : 2002.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

We present a method to improve encryption level by use of a rotational term in the double random-phase-mask(RPM) encryption system. Encrypted optical images are recorded in a photorefractive LiNbO$_3$:Fe crystal and reconstructed by using a phase conjugated reading beam. The encryption level for the analog image is analyzed by use of visibility function.

회전항을 첨가한 임의 위상판(random phase mask; RPM)을 이용하여 광학상 암호화 장치의 암호화수준을 향상시키는 방법을 제시하였다. 이중 임의 위상판으로 암호화된 광학상은 광굴절 LiNbO$_3$:Fe 결정에 기록되고 위상공액파를 이용하여 재생하였으며, 세기변조 함수를 이용하여 아날로그 입력상에 대한 암호화 수준을 분석하였다.

Keywords

References

  1. Opt. Lett. v.18 no.11 Angle-multiplexed strorage of 5000 holograms in lithium niobate F.H. Mok https://doi.org/10.1364/OL.18.000915
  2. Appl. Opt. v.38 no.2 Thermal fixing of 10,000 holograms in LiNbO₃:Fe X. An;D. Psaltis;G.W. Burr https://doi.org/10.1364/AO.38.000386
  3. Physics Today Securing information with optical technologies B. Javidi
  4. Appl. Opt. v.34 no.26 Encrypted holographic data storage based on orthogonal-phase-code multiplexing J.F. Heanue;M.C. Bashaw;L. Hesselink https://doi.org/10.1364/AO.34.006012
  5. Opt. Eng. v.35 Random phase encoding for optical security R.K. Wang;I.A. Watson;C.R. Chatwin https://doi.org/10.1117/1.600849
  6. Appl. Opt. v.32 no.26 Optical network for real-time face recognition H.S. Li;Y. Qiao;D. Osaltis https://doi.org/10.1364/AO.32.005026
  7. Optical Document Security R.L. van Reneese(ed.)
  8. Opt. Eng. v.30 Optical fingerprint identification by joint transform correlation K.H. Fielding;J.L. Horner;C.K. Makekau https://doi.org/10.1117/12.56030
  9. Proc. SPIE v.2237 Dynamic holography in optical pattern recognition H. Rajenbach https://doi.org/10.1117/12.169441
  10. Fundamentals of Photonics B.E.A. Saleh;M. Teich
  11. Real-time Optical information Processing B. Javidi(Ed.);J.L. Horner(Ed.)
  12. 응용광학 장수;조재흥(외)
  13. Optics E. Hecht
  14. 제5회 광정보처리 학술발표회 회전형 임의 위상판을 이용한 광학상의 암호화 김병철;차성도;신승호
  15. 한국광학회 2001년도 동계학술발표회 임의 위상판에 의한 광학상 암호화의 분석 김병철;차성도;신승호
  16. Opt. Lett. v.20 no.7 Optical image encryption based on input plans and Fourier plane random encoding P. Refregier;B. Javidi https://doi.org/10.1364/OL.20.000767
  17. Opt. Lett. v.24 no.11 Encrypted optical memory system using three-dimensional keys in the Fresnel domain O. Matoba;B. Javidi https://doi.org/10.1364/OL.24.000762
  18. Introduction to Fourier Optics J.W. Goodman https://doi.org/10.1364/OL.24.000762