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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 22 — Nov. 15, 2005
  • pp: 3021–3023

Relative focus map estimation using blind deconvolution

Levente Kovács and Tamás Szirányi  »View Author Affiliations


Optics Letters, Vol. 30, Issue 22, pp. 3021-3023 (2005)
http://dx.doi.org/10.1364/OL.30.003021


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Abstract

An automatic focus map extraction method is presented that uses a modification of blind deconvolution for estimation of localized blurring functions. We use these local blurring functions [so-called point-spread functions (PSFs)] for extraction of focus areas on ordinary images. In this inverse task our goal is not image reconstruction but the estimation of localized PSFs and the relative focus map. Thus the method is less sensitive than general deconvolution is to noise and ill-posed deconvolution problems. The focus areas can be estimated without any knowledge of the shooting conditions or of the optical system used.

© 2005 Optical Society of America

OCIS Codes
(100.1830) Image processing : Deconvolution
(100.2000) Image processing : Digital image processing
(100.2960) Image processing : Image analysis

ToC Category:
Image Processing

Citation
Levente Kovács and Tamás Szirányi, "Relative focus map estimation using blind deconvolution," Opt. Lett. 30, 3021-3023 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-22-3021


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