OSA's Digital Library

Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 14, Iss. 2 — Jun. 25, 2010
  • pp: 97–103

QPSK Modulation Based Optical Image Cryptosystem Using Phase-shifting Digital Holography

Seok-Hee Jeon and Sang-Keun Gil  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 14, Issue 2, pp. 97-103 (2010)

View Full Text Article

Acrobat PDF (1077 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

  • Export Citation/Save Click for help


We propose a new technique for the optical encryption of gray-level optical images digitized into 8-bits binary data by ASCII encoding followed by QPSK modulation. We made an encrypted digital hologram with a security key by using 2-step phase-shifting digital holography, and the encrypted digital hologram is recorded on a CCD camera with 256 gray-level quantized intensities. With these encrypted digital holograms, the phase values are reconstructed by the same security key and are decrypted into the original gray-level optical image by demodulation and decoding. Simulation results show that the proposed method can be used for cryptosystems and security systems.

© 2010 Optical Society of Korea

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.4560) Fourier optics and signal processing : Data processing by optical means
(090.0090) Holography : Holography
(090.2880) Holography : Holographic interferometry
(170.3010) Medical optics and biotechnology : Image reconstruction techniques

Original Manuscript: April 7, 2010
Revised Manuscript: May 31, 2010
Manuscript Accepted: June 1, 2010
Published: June 25, 2010

Seok-Hee Jeon and Sang-Keun Gil, "QPSK Modulation Based Optical Image Cryptosystem Using Phase-shifting Digital Holography," J. Opt. Soc. Korea 14, 97-103 (2010)

Sort:  Year  |  Journal  |  Reset


  1. N. Yoshikawa, M. Itoh, and T. Yatagai, “Binary computergenerated holograms for security applications from a synthetic double-exposure method by electron-beam lithography,” Opt. Lett. 23, 1483-1485 (1990). [CrossRef]
  2. B. Javidi and J. L. Horner, “Optical pattern recognition for validation and security verification,” Opt. Eng. 33, 1752-1756 (1994). [CrossRef]
  3. J. F. Heanue, M. C. Bashaw, and L. Hesselink, “Encrypted holographic data storage based on orthogonal-phase-code multiplexing,” Appl. Opt. 34, 6012-6015 (1995). [CrossRef]
  4. P. Refregier and B. Javidi, “Optical image encryption based on input plane and Fourier plane random encoding,” Opt. Lett. 20, 767-769 (1995). [CrossRef]
  5. D. Weber and J. Trolinger, “Novel implementation of nonlinear joint transform correlators in optical security and validation,” Opt. Eng. 38, 62-68 (1999). [CrossRef]
  6. G.-S. Lin, H. T. Chang, W.-N. Lie, and C.-H. Chuang, “Publickey-based optical image cryptosystem based on data embedding techniques,” Opt. Eng. 42, 2331-2339 (2003). [CrossRef]
  7. I. Yamaguchi and T. Zhang, “Phase-shifting digital holography,” Opt. Lett. 22, 610-612 (1998).
  8. E. Cuche, F. Bevilacqua, and C. Depeursinge, “Digital holography for quantitative phase-contrast imaging,” Opt. Lett. 24, 291-293 (1999). [CrossRef]
  9. E. Tajahuerce, O. Matoba, S. C. Verrall, and B. Javidi, “Optoelectronic information encryption with phase-shifting interferometry,” Appl. Opt. 39, 2313-2320 (2000). [CrossRef]
  10. G. Unnikrishnan and K. Singh, “Double random fractional Fourier domain encoding for optical security,” Opt. Eng. 39, 2853-2859 (2000). [CrossRef]
  11. F. Zhang, J. D. R. Valera, and I. Yamaguchi, “Vibration analysis by phase shifting digital holography,” Opt. Rev. 11, 297-299 (2004). [CrossRef]
  12. S. K. Gil, S. H. Jeon, N. Kim, and J. R. Jeong, “Successive encryption and transmission with phase-shifting digital holography,” Proc. SPIE 6136, 339-346 (2006).
  13. S. K. Gil, H. J. Byun, H. J. Lee, S. H. Jeon, and J. R. Jeong, “Optical encryption of binary data information with 2-step phase-shifting digital holography,” Proc. SPIE 6488, 648812 (2007). [CrossRef]
  14. S. H. Jeon, Y. G. Hwang, and S. K. Gil, “Optical encryption of gray-level image using on-axis and 2-f digital holography with two-step phase-shifting method,” Opt. Rev. 15, 181-186 (2008). [CrossRef]
  15. P. Hariharan, “Digital phase-shifting interferometry : a simple error compensating phase calculation algorithm,” Appl. Opt. 26, 2504-2505 (1987). [CrossRef]
  16. P. Hariharan, “Error analysis for optical security by means of 4-step phase-shifting digital hologaphy,” J. Opt. Soc. Korea 10, 118-123 (2006). [CrossRef]
  17. M.-O. Jeong, N. Kim, and J.-H. Park, “Elemental image synthesis for integral imaging using phase-shifting digital holography,” J. Opt. Soc. Korea 12, 275-280 (2008). [CrossRef]
  18. D. Kim and Y. J. Cho, “3-D surface profile measurement using an acousto-optic tunable filter based on spectral phase shifting technique,” J. Opt. Soc. Korea 12, 281-287 (2008). [CrossRef]

Cited By

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited