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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 18, Iss. 22 — Nov. 15, 1993
  • pp: 1949–1951

Locally nonlinear matched filtering

Oscar Gualdron and Henri H. Arsenault  »View Author Affiliations


Optics Letters, Vol. 18, Issue 22, pp. 1949-1951 (1993)
http://dx.doi.org/10.1364/OL.18.001949


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Abstract

A new matched filter for pattern recognition is introduced. Previous researchers have introduced matched filters that are nonlinear functions of the spectrum, for which the classical matched filter is divided by some power m of the spectrum of interest. We further generalize this filter by making the power m a function of the spatial frequency; this permits the design of filters that combine the advantageous properties of matched filters, phase-only filters, and inverse filters without the corresponding disadvantages. The first computer experiments indicate that the new filter yields sharper correlation peaks and better discrimination than the matched filter and the phase-only filter and yields more robustness against noise.

© 1993 Optical Society of America

History
Original Manuscript: June 1, 1993
Published: November 15, 1993

Citation
Oscar Gualdron and Henri H. Arsenault, "Locally nonlinear matched filtering," Opt. Lett. 18, 1949-1951 (1993)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-18-22-1949


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