Abstract
An image-encrypted joint transform correlator for pattern recognition is proposed and evaluated. The correlator performs twofold correlation for recognizing the primary image and cipher, and the encrypting cipher acts to enhance or inhibit the correlation peak if the cipher is correctly input. By incorporating the original image with an appropriate cipher, the correlator achieves better pattern discrimination and is robust against distortion. Simulation results show that the pixel number and the cell size of cipher affect the characteristics of the correlator.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
F. T. S. Yu and D. A. Gregory: Proc. IEEE84 (1996) 733.
C. S. Weaver and J. W. Goodman: Appl. Opt.5 (1966) 1248.
R. L. Renesse:Optical Document Security (Artech House, London, 1998).
B. Javidi and J. L. Hornor: Opt. Eng.33 (1994) 1752.
P. Refregier and B. Javidi: Opt. Lett.20 (1995) 767.
B. Javidi and A. Sergent: Opt. Eng.36 (1997) 935.
D. Weber and J. Trolinger: Opt. Eng.38 (1999) 62.
J. A. Davis. D. E. McNamara, D. M. Cottrell and T. Sonehara: Appl. Opt.39 (2000) 1549.
B. Javidi and T. Nomura: Opt. Eng.39 (2000) 2439.
J. Cheng: Proc. 2nd Int. Photonics Conf.2 (2000) 893.
B. V. K. Vijaya Kumar and L. Hassebrook: Appl. Opt.29 (1990) 2997.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Cheng, CJ. Performance of an image-encrypted joint transform correlator for pattern recognition. Optical Review 8, 431–435 (2001). https://doi.org/10.1007/BF02931731
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02931731