Relative focus map estimation using blind deconvolution.

Levente Kovács; Tamás Szirányi

doi:10.1364/ol.30.003021

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Relative focus map estimation using blind deconvolution.

Levente Kovács·Tamás Szirányi

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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.

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Algorithms Computer Simulation Image Enhancement Image Interpretation, Computer-Assisted Information Storage and Retrieval Models, Statistical Regression Analysis Reproducibility of Results Sensitivity and Specificity Statistics as Topic Journal Article

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Levente Kovács, Tamás Szirányi. 2005-11-15. Relative focus map estimation using blind deconvolution.. https://doi.org/10.1364/ol.30.003021

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