New Random and Additional Phase Adjustment of Joint Transform Correlator

  • Jeong, Man-Ho (Department of Laser & Optical Information Engineering, Cheongju University)
  • Received : 2010.01.28
  • Accepted : 2010.03.12
  • Published : 2010.06.25


Joint transform correlator (JTC) has been the most suitable technique for real time pattern recognition. This paper proposes a new phase adjustment which adopts two steps of random phase adjustment in the spatial domain and additional phase adjustment in the Fourier domain. Simulated results are presented to show the optimum condition of the phase adjustment and the effect on the correlation peaks, the peak signal-to-noise ratio and the level of discrimination.


  1. C. J. Weaver and J. W. Goodman, “A technique for optically convolving two functions,” Appl. Opt. 5, 1248-1249 (1966).
  2. P. D. Gianino and J. L. Horner, “Phase-only matched filtering,” Appl. Opt. 23, 812-816 (1984).
  3. G. G. Mu, X. M. Wang, and Z. Q. Wang, “Amplitudecompensated matched filtering,” Appl. Opt. 27, 3461-3463 (1988).
  4. B. Javidi and J. Wang, “Binary nonlinear joint transform correlation with median and sub-set median thresholding,” Appl. Opt. 30, 967-976 (1991).
  5. B. Javidi, J. Li, A. H. Fazollahi, and J. Horner, “Binary nonlinear joint transform correlator performance with different thresholding methods under unknown illumination conditions,” Appl. Opt. 34, 886-890 (1995).
  6. M. S. Alam, A. A. S. Awwal, and M. A. Karim, “Improved correlation discrimination using joint Fourier transform optical correlator,” Microwave Opt. Technol. Lett. 4, 103-106 (1991).
  7. M. H. Jeong, “Analysis of fingerprint recognition characteristics based on new CGH direct comparison method and nonlinear joint transform correlator,” J. Opt. Soc. Korea 13, 445-450 (2009).
  8. M. S. Alam, X. W. Chen, and M. A. Karim, “Distortioninvariant fringe-adjusted joint transform correlation,” Appl. Opt. 36, 7422-7427 (1997).
  9. H. E. Michel and A. A. S. Awwal, “Joint Fourier transform correlation with phase thresholding in the Fourier domain,” Opt. Eng. 37, 33-37 (1998).
  10. M. S. Alam, J. Khan, and A. Bai, “Heteroassociative multiple-target tracking by fringe-adjusted joint transform correlation,” Appl. Opt. 43, 358-365 (2004).
  11. M. H. Jeong, “New iterative filter for fringe adjustment of joint transform correlator,” J. Opt. Soc. Korea 14, 33-37 (2010)

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