Relative focus map estimation using blind deconvolution

Levente Kovács, Tamás Szirányi

Research output: Contribution to journalArticle

15 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)3021-3023
Number of pages3
JournalOptics Letters
Issue number22
Publication statusPublished - Nov 15 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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