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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 10, Iss. 4 — Apr. 1, 1993
  • pp: 561–566

Entropy-based depth from focus

V. Michael Bove, Jr.  »View Author Affiliations

JOSA A, Vol. 10, Issue 4, pp. 561-566 (1993)

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The two-image depth-from-focus problem is reconsidered in terms of entropy loss in a linear filter. It is shown that this formulation leads to a relatively simple solution whose variance is equal to or less than that from a regression approach. The formulation is appropriate even when the point-spread function of the optical system is not well suited to a low-order regression fit or when both images used contain some degree of defocusing with distance.

© 1993 Optical Society of America

Original Manuscript: March 9, 1992
Revised Manuscript: October 23, 1992
Manuscript Accepted: November 3, 1992
Published: April 1, 1993

V. Michael Bove, "Entropy-based depth from focus," J. Opt. Soc. Am. A 10, 561-566 (1993)

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