Abstract

A novel joint transform correlator (JTC) system is presented in which the stored reference image is phase encrypted prior to applying the JTC. The encryption disperses all the trivial correlation peaks in the correlator output. The reference image is encrypted electronically, which simplifies the need for a complex optical setup. The encryption removes the JTC requirement for spatial separation between the reference and the target images in the joint input plane. This efficient use of spatial light modulator space can be used to phase multiplex more reference images so that correlations with multiple reference images can be performed in a single JTC cycle.

© 2010 Optical Society of America

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  1. C. Weaver and J. Goodman, “Technique for optically convolving two functions,” Appl. Opt. 5, 1248-1249 (1966.
    [CrossRef]
  2. A. A. S. Awwal, M. A. Karim, and S. R. Jahan, “Improved correlation discrimination using an amplitude modulated phase-only filter,” Appl. Opt. 29, 2107 (1990).
    [CrossRef]
  3. O. Perez and M. A. Karim, “Optical enhancements of joint Fourier transform correlator by image subtraction,” Proc. SPIE 1471, 255-264 (1991).
  4. Q. Tang and B. Javidi, “Technique for reducing the redundant and self-correlation terms in joint transform correlators,” Appl. Opt. 32, 1911-1918 (1993).
    [CrossRef]
  5. G. Lu, Z. Zhang, S. Wu, and F. T. S. Yu, “Implementation of a non-zero-order joint-transform correlator by use of phase shifting techniques,” Appl. Opt. 36, 470-483 (1997).
    [CrossRef]
  6. T. Nomura, “Phase-encoded joint transform correlator to reduce the influence of extraneous signals,” Appl. Opt. 37, 3651-3655 (1998).
    [CrossRef]
  7. Z. Zalevsky, A. Rubner, J. García, P. Garcia-Martinez, C. Ferreira, and Emanuel Marom, “Joint transform correlator with spatial code division multiplexing,” Appl. Opt. 45, 7325-7333 (2006).
    [CrossRef]
  8. C. F. Hester and M. G. Temmen, “Phase-phase implementation of optical correlator,” Proc. SPIE 1297, 207-219 (1990).
  9. R. R. Kallman and D. H. Goldstein, “Phase-encoding input image for optical pattern recognition,” Opt. Eng. 33, 1806-1812 (1994).
  10. G. Lu, Z. Zhang, and F. T. S. Yu, “Phase-encoded input joint transform correlator with improved pattern discriminability,” Opt. Lett. 20, 1307-1309 (1995).
    [CrossRef]
  11. G. Lu and F. T. S. Yu, “Performance of a phase-transformed input joint transform correlator,” Appl. Opt. 35, 304-313(1996).
    [CrossRef]

2006 (1)

1998 (1)

1997 (1)

1996 (1)

1995 (1)

1994 (1)

R. R. Kallman and D. H. Goldstein, “Phase-encoding input image for optical pattern recognition,” Opt. Eng. 33, 1806-1812 (1994).

1993 (1)

1991 (1)

O. Perez and M. A. Karim, “Optical enhancements of joint Fourier transform correlator by image subtraction,” Proc. SPIE 1471, 255-264 (1991).

1990 (2)

C. F. Hester and M. G. Temmen, “Phase-phase implementation of optical correlator,” Proc. SPIE 1297, 207-219 (1990).

A. A. S. Awwal, M. A. Karim, and S. R. Jahan, “Improved correlation discrimination using an amplitude modulated phase-only filter,” Appl. Opt. 29, 2107 (1990).
[CrossRef]

1966 (1)

Awwal, A. A. S.

Ferreira, C.

García, J.

Garcia-Martinez, P.

Goldstein, D. H.

R. R. Kallman and D. H. Goldstein, “Phase-encoding input image for optical pattern recognition,” Opt. Eng. 33, 1806-1812 (1994).

Goodman, J.

Hester, C. F.

C. F. Hester and M. G. Temmen, “Phase-phase implementation of optical correlator,” Proc. SPIE 1297, 207-219 (1990).

Jahan, S. R.

Javidi, B.

Kallman, R. R.

R. R. Kallman and D. H. Goldstein, “Phase-encoding input image for optical pattern recognition,” Opt. Eng. 33, 1806-1812 (1994).

Karim, M. A.

O. Perez and M. A. Karim, “Optical enhancements of joint Fourier transform correlator by image subtraction,” Proc. SPIE 1471, 255-264 (1991).

A. A. S. Awwal, M. A. Karim, and S. R. Jahan, “Improved correlation discrimination using an amplitude modulated phase-only filter,” Appl. Opt. 29, 2107 (1990).
[CrossRef]

Lu, G.

Marom, Emanuel

Nomura, T.

Perez, O.

O. Perez and M. A. Karim, “Optical enhancements of joint Fourier transform correlator by image subtraction,” Proc. SPIE 1471, 255-264 (1991).

Rubner, A.

Tang, Q.

Temmen, M. G.

C. F. Hester and M. G. Temmen, “Phase-phase implementation of optical correlator,” Proc. SPIE 1297, 207-219 (1990).

Weaver, C.

Wu, S.

Yu, F. T. S.

Yu, F. T. S.

Zalevsky, Z.

Zhang, Z.

Appl. Opt. (7)

Opt. Eng. (1)

R. R. Kallman and D. H. Goldstein, “Phase-encoding input image for optical pattern recognition,” Opt. Eng. 33, 1806-1812 (1994).

Opt. Lett. (1)

Proc. SPIE (2)

O. Perez and M. A. Karim, “Optical enhancements of joint Fourier transform correlator by image subtraction,” Proc. SPIE 1471, 255-264 (1991).

C. F. Hester and M. G. Temmen, “Phase-phase implementation of optical correlator,” Proc. SPIE 1297, 207-219 (1990).

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