Optical antialiasing filters based on complementary golay codes

J. R. Leger, J. Schuler, N. Morphis, R. Knowlden

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

An optical filter that has an ideal response for removing aliasing noise from a sampled imaging system is described. The all-phase filter uses complementary Golay codes to achieve an optimum low-pass transfer function with no sidelobes. A computer model shows that the optical system has the expected performance in the ideal case, but degrades somewhat with wavelength variations and image aberrations. An experimental demonstration of the filter shows the optical transfer function performance and the response to imagery with a sampled detector.

Original languageEnglish (US)
Pages (from-to)4692-4701
Number of pages10
JournalApplied Optics
Volume36
Issue number20
DOIs
StatePublished - Jul 10 1997

Keywords

  • Antialias filter
  • Binary optics
  • Codes
  • Diffractive optics
  • Hadamard matrices
  • Optical filtering
  • Optical sampling
  • Walsh functions

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