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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 1, Iss. 3 — Mar. 1, 1984
  • pp: 241–250

Image gathering and processing for enhanced resolution

W. Thomas Cathey, B. Roy Frieden, William T. Rhodes, and Craig K. Rushforth  »View Author Affiliations

JOSA A, Vol. 1, Issue 3, pp. 241-250 (1984)

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Traditional approaches to optical resolution enhancement have involved either the design of appropriate image-formation systems or some type of postprocessing of an image that has already been formed. Results presented in this paper suggest that improved images can be obtained if the image-gathering system is designed specifically to enhance the performance of the image-restoration algorithm to be used. We consider a class of problems in which the total available spatial bandwidth is fixed but the location of this bandwidth along the spatial-frequency axis is to some extent under our control. For example, we might consider either a low-pass system or a bandpass system of the same total bandwidth. We show that system performance can be substantially improved by proper allocation of the available bandwidth in the spatial-frequency domain. The optimum allocation is shown to be a function of the signal-to-noise ratio. We also describe coherent and incoherent optical image-gathering systems that can achieve the desired spatial-frequency passbands.

© 1984 Optical Society of America

Original Manuscript: May 19, 1983
Manuscript Accepted: November 14, 1983
Published: March 1, 1984

W. Thomas Cathey, B. Roy Frieden, William T. Rhodes, and Craig K. Rushforth, "Image gathering and processing for enhanced resolution," J. Opt. Soc. Am. A 1, 241-250 (1984)

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