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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 8 — Mar. 10, 1998
  • pp: 1283–1291

Nonlinear filtering for recognition of phase-encoded images

Bahram Javidi, Wenlu Wang, Guanshen Zhang, and Jian Li  »View Author Affiliations


Applied Optics, Vol. 37, Issue 8, pp. 1283-1291 (1998)
http://dx.doi.org/10.1364/AO.37.001283


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Abstract

We investigate the use of Fourier plane nonlinear filtering for phase-encoded images. We investigate the performance of the nonlinear joint transform correlator and the nonlinearly transformed matched filter for phase-encoded images with different types of input noise. We use the peak-to-output-energy ratio, peak-to-sidelobe ratio, and discrimination ratio as the metrics for measuring the performances. We mathematically analyze the peak-to-output-energy ratio of the nonlinearly transformed matched filter for phase-encoded images with spatially nonoverlapping white noise. Computer simulations are provided to show the performance improvements of the nonlinear filtering techniques for the phase-encoded images. In comparison with linear filtering techniques, we find that the nonlinear filtering techniques substantially improve the performance metrics. From the computer-simulation results it can be seen that the nonlinear joint transform correlator performs better than the nonlinearly transformed matched filter in detecting phase-encoded targets in the presence of different types of noise, such as additive overlapping white noise, spatially nonoverlapping white background noise, spatially nonoverlapping colored background noise, and nontarget objects.

© 1998 Optical Society of America

History
Original Manuscript: July 7, 1997
Revised Manuscript: October 31, 1997
Published: March 10, 1998

Citation
Bahram Javidi, Wenlu Wang, Guanshen Zhang, and Jian Li, "Nonlinear filtering for recognition of phase-encoded images," Appl. Opt. 37, 1283-1291 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-8-1283


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References

  1. R. R. Kallman, D. H. Goldstein, “Phase-encoding input images for optical pattern recognition,” Opt. Eng. 33, 1806–1812 (1994). [CrossRef]
  2. S. Maze, Ph. Réfrégier, “Optical correlation: influence of the coding of the input images,” Appl. Opt. 33, 6788–6796 (1994). [CrossRef] [PubMed]
  3. B. Javidi, J. L. Horner, “Optical pattern recognition for validation and security verification,” Opt. Eng. 33, 1752–1756 (1994). [CrossRef]
  4. N. Konftorti, E. Marom, S.-T. Wu, “Phase-only modulation with twisted nematic liquid-crystal spatial light modulators,” Opt. Lett. 13, 251–253 (1988). [CrossRef]
  5. T. H. Barnes, T. Eiju, K. Matsuda, N. Ooyama, “Phase-only modulation using a twisted nematic liquid crystal television,” Appl. Opt. 28, 4845–4852 (1989). [CrossRef] [PubMed]
  6. L. J. Hornbeck, “Deformable-mirror spatial light modulators,” in Spatial Light Modulators and Applications III, U. Efron, ed., Proc. SPIE1150, 86–102 (1990). [CrossRef]
  7. L. G. Neto, D. Roberge, Y. Sheng, “Programmable optical phase-mostly holograms with coupled-mode modulation liquid-crystal television,” Appl. Opt. 34, 1944–1950 (1995). [CrossRef] [PubMed]
  8. C. Hester, M. Temmen, “Phase-phase implementation of optical correlators,” in Hybrid Image and Signal Processing II, D. P. Casasent, A. G. Tescher, eds., Proc. SPIE1297, 207–219 (1990). [CrossRef]
  9. B. Javidi, “Generalization of the linear matched filter concept to nonlinear matched filters,” Appl. Opt. 29, 1215–1224 (1990). [CrossRef] [PubMed]
  10. J. L. Horner, P. D. Gianino, “Phase-only matched filtering,” Appl. Opt. 23, 812–816 (1984). [CrossRef] [PubMed]
  11. B. Javidi, “Nonlinear joint power spectrum based optical correlation,” Appl. Opt. 28, 2358–2367 (1989). [CrossRef] [PubMed]
  12. B. Javidi, J. Wang, “Design of filters to detect a noisy target in non-overlapping background noise,” J. Opt. Soc. Am. A 11, 2604–2612 (1994). [CrossRef]
  13. Ph. Réfrégier, F. Goudail, “Decision theory applied to object location and nonlinear joint-transform correlation,” in Optoelectronic Information Processing, B. Javidi, Ph. Réfrégier, eds. (SPIE Press, Bellingham, Wash., 1997).

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