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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 28, Iss. 11 — Jun. 1, 1989
  • pp: 2070–2074

Phase-only circular harmonic matched filtering

Hon Fai Yau and Chi Ching Chang  »View Author Affiliations


Applied Optics, Vol. 28, Issue 11, pp. 2070-2074 (1989)
http://dx.doi.org/10.1364/AO.28.002070


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Abstract

The idea of a phase-only matched filter [ HornerJ. L. GianinoP. D., Appl. Opt. 23, 812– 816 ( 1984)] is incorporated in the scheme of circular harmonic component matched filtering [ HsuY. N. ArsenaultH. H., Appl. Opt. 21, 4016– 4019 ( 1982)]. Computer simulation showed that the phase-only circular harmonic matched filter possesses the rotational invariant property for 2-D recognition. Furthermore, it does a better job in recognizing closely placed targets compared with traditional circular harmonic filters. The simulation also demonstrated that a pure phase circular harmonic filter is less liable to give rise to false alarms in recognition because the sidelobe produced by it is much less pronounced and much less extensive than that produced by a traditional circular harmonic filter.

© 1989 Optical Society of America

History
Original Manuscript: August 22, 1988
Published: June 1, 1989

Citation
Hon Fai Yau and Chi Ching Chang, "Phase-only circular harmonic matched filtering," Appl. Opt. 28, 2070-2074 (1989)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-28-11-2070

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