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Applied Optics

Applied Optics


  • Vol. 37, Iss. 17 — Jun. 10, 1998
  • pp: 3639–3642

Performance improvement of a phase-shifting joint transform correlator by use of phase-iterative techniques

Hong-Jun Su and Mohammad A. Karim  »View Author Affiliations

Applied Optics, Vol. 37, Issue 17, pp. 3639-3642 (1998)

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We propose a new technique to improve the performance of the joint transform correlator (JTC). In this technique we have applied the phase-iterative algorithm to a phase-shifting JTC (PSJTC). By doing so, we restrain the noise that is contained in the recovered phase of the joint transform power spectra for the input images with background and additive noise. In the case in which the input image is embedded in the input noise, we find that, by using the phase-iterative techniques with the PSJTC, one can get a higher cross-correlation peak and signal-to-noise ratio than with a PSJTC alone. From the computer-simulation results, one can conclude that the proposed algorithm successfully enhances PSJTC performance, especially for an input image with large noise.

© 1998 Optical Society of America

OCIS Codes
(100.5010) Image processing : Pattern recognition

Hong-Jun Su and Mohammad A. Karim, "Performance Improvement of a Phase-Shifting Joint Transform Correlator by use of Phase-Iterative Techniques," Appl. Opt. 37, 3639-3642 (1998)

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