Optical security system using fourier plane encoding

Optical: systems and elements – Holographic system or element – Fourier transform holography

Reexamination Certificate

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C359S002000, C359S561000, C382S209000

Reexamination Certificate

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07095540

ABSTRACT:
A method of verifying the authenticity of an object is presented. The method comprises providing a primary image; providing a secondary image; encoding the primary image; providing a random code; convolving the encoded primary image with the random code, providing thereby a reference image; affixing the reference image to the object to be authenticated; transforming the reference image; and comparing the transformed reference image with the secondary image. A system for verifying the authenticity of an object is presented. The system comprises a signal source; a first subsystem receiving a first signal from the signal source and providing as output therefrom a first output signal; a second subsystem receiving a second signal from the signal source and providing as output therefrom a second output signal; a third subsystem receiving the first and second output signals for comparing the first output signal with the second output signal.

REFERENCES:
patent: 5367579 (1994-11-01), Javidi et al.
patent: 5485312 (1996-01-01), Horner et al.
B. Javidi, E. Ahouzi, “Optical security system with Fourier plane encoding”, Appl. Opt., vol. 37, No. 26, Sep. 10, 1998, pp. 6247-6255.
Hsin-Yu Sidney Li, Yong Qiao & Demetri Psaltis “Optical network for real-time face recognition” Applied Optics, vol. 32, No. 26, Sep. 10, 1993.
U. Schnars and W. Juptner “Direct Recording Of Holograms By a CCD Target and Numerical Reconstrution”, Applied Optics, lvol. 33, No. 2, Jan. 10, 1994.
S. Maze and Ph. Refregier “Optical Correlation: Influence of the coding of the Input Image”, Applied Optics, vol. 33, No. 29, Oct. 10, 1994.
Bahram Javidi “Nonlinear Joint Power Spectrum Based Optical Correlation”, Applied Optics, vol. 28, No. 12, Jun. 15, 1989.
C L. Wilson, C.I. Watson and E.G. Paek “Combined Optical and Neural Network Fingerprint Matching” SPIE Vo. 3073, pp. 373-382, 1997.
Thomas J. Grycewicz, Bahram Javidi Experimental Comparison Of Binary Joint Transform Correlators Used For Fingerprint Identification, SPIE, vol. 35, No. 9, pp. 2519-2525, Sep. 1996.
David Weber, James Trolinger “Novel Implementation Of Nonlinear Joint Transform correlators In Optical Security and Validation” SPIE, Optical Engineering, vol. 38, No. 1, pp. 62-68, Jan. 1999.
Bahram Javidi, Joseph L. Horner “Optical Pattern Recognition For Validation and Security Verification” SPIE, Optical Engineering, vol. 33, No. 6, pp. 1752-1756, Jun. 1994.
Etienne Cuche, Frederic Bevilacqua and Christian Depeursinge “Digital Holography For Quantitative Phase-Contrast Imaging” Optics Letters, lvol. 24, No. 5, pp. 291-293, Mar. 1, 1999.
Bradley W. Schilling, Ting-Chung Poon, Guy Indebetouw, Brian Storrie, K. Shinoda, Y Suzuki & Ming Hsien Wu “Three Dimensional Holographic Fluorescence Microscopy” Optics Letters, vol. 22, No. 19, pp. 1506-1508, Oct. 1, 1997.
Philippe Refregier and Bahram Javidi “Optical Image Encryption Based On Input Plane and Fourier Plan Random Encoding” Optics Letters, vol. 20, No. 7, pp. 767-769, Apr. 1, 1995.
Osamu Matoba and Bahram Javidi “Encrypted Optical Memory System Using Three-dimensional Keys in the Fresnel Domain”, Optics Letters, vol. 24, No. 11, pp. 762-764, Jun. 1, 1999.
Jacques Rodolfo, Henry Rajbenbach and Jean-Pierre Huignard “Performance of a Photorefractive Jooint Transform Correlator For Fingerprint Identification” SPIE, vol. 34, No. 4, pp. 1166-1171, Apr. 1995.
Francois Goudail, Franck Bollaro, Bahram Javidi and Philippe Refregier “Influence Of a Perturbation In a Double Phase-Encoding System” Journal of the Optical Society of America, vol. 15, No. 10, pp. 2629-2638, Oct. 1998.
Richard O. Duda and Peter E. Hart “Pattern Classification And Scene Analysis”, A. Wiley-Interscience Publication, Chapter 8, “The Spatial Frequency Domain”, pp. 298-326.
Bahram Javidi “Real-Time Optical Information Processing”, Academic Press, Inc., Chapter 4 “Nonlinear Joint Transform Correlator”, pp. 115-183, 1994.
P. Hariharan “Optical Holography” Chapters 2, 10 and 5 and pp. 252-264, Cambridge University Press.
E. Wolf “Progress In Optics” vol. XVI, Chapter III “Computer Generated Holograms: Techniques and Applications” by Wai-Hon Lee, pp. 121-231, North Holland Publishing Company-Amsterdam.
R. Schalkoff “Pattern Recognition: Statistical, Structural and Neural Approaches” Chapter 1, pp. 2-31 Pattern Recognition (PR) Overview and Appendix 5, pp. 328-336 “Similarity Measures, Matching Techniques, and Scale-Space Approaches” J. Wiley and Sons, 1992.
J.W. Goodman, “Introduction To Fourier Optics” pp. 243-251, McGraw-Hill, 1996.
Kenneth H. Fielding, Joseph L. Horner, Charles K. Madekau “Optical fingerprint identification by binary joint transform correlation”, Optical Engineering, vol. 30, No. 12, Dec. 1991.
C.S. Weaver, J.W. Goodman “A Technique for Optically Convolving Two Functions”, Applied Optics, VBol. 5, No. 7, Jul. 1966.
S. Maze, Ph. Refregier “Noise robustness of optical correlation for amplitude of phase modulation of the input image”, Optical Society of America, vol. 17, No. 6, 1992.
H. Kogelnik, K.S. Pennington “Holographic Imaging Through a Random Medium”, Journal of the Optical Society of America, vol. 58, No. 12, Feb. 1968.
Marek Kowalczyk “Spectral and imaging propertiesof uniform diffuseers”, Journal of the Optical Society of America A, vol. 1, No. 2, Feb. 1984.

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