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Applied Optics

Applied Optics


  • Vol. 22, Iss. 2 — Jan. 15, 1983
  • pp: 288–297

Optimal linear predisplay digital filters

Douglas J. Granrath and Thomas W. Ryan  »View Author Affiliations

Applied Optics, Vol. 22, Issue 2, pp. 288-297 (1983)

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The problem of reconstructing digital data with nonideal analog interpolators is addressed. A theoretical viewpoint is taken which specifies optimal data reconstructors when a predisplay digital filter is employed. This theory allows for a weighted error definition so that solutions with different desired qualities may be obtained. Results for Gaussian-profiled interpolators show that a factor of ~100 in reconstruction-error reduction is achieved with a 13-tap finite-impulse-response predisplay digital filter. The problem of writing negative digital values with incoherent light spots is shown to be avoidable if the signal is reconstructed on photographic film.

© 1983 Optical Society of America

Original Manuscript: July 27, 1982
Published: January 15, 1983

Douglas J. Granrath and Thomas W. Ryan, "Optimal linear predisplay digital filters," Appl. Opt. 22, 288-297 (1983)

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  1. A. A. Jamberdino, Opt. Eng. 20, 329 (1981).
  2. S. A. Tretter, Introduction to Discrete-Time Signal Processing (Wiley, New York, 1976).
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