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Communication Dans Un Congrès Année : 2016

Refocus criterion based on decorrelation phase noise in digital Fresnel holography

Résumé

This paper presents an alternative approach for image refocusing in digital Fresnel holography. In literature, a large majority of reported focus detection criteria is based on amplitude contrast or phase contrast. We propose a new focus detection criterion based on the speckle phase coherence factor. Robust noise probability density is estimated from anisotropic diffusion. Estimation of the coherence factor is then obtained from a least square fit. Experimental results show the suitability of the proposed approach for accurate image plane refocusing.
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Dates et versions

hal-02403132 , version 1 (10-12-2019)

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Pascal Picart, Silvio Montrésor, Oleksandr Sakharuk, Leonid Muravsky. Refocus criterion based on decorrelation phase noise in digital Fresnel holography. Digital Holography and Three-Dimensional Imaging, 2016, Heidelberg, France. pp.DW5E.5, ⟨10.1364/DH.2016.DW5E.5⟩. ⟨hal-02403132⟩
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