Object reconstruction from in-line Fresnel holograms without explicit depth focusing

Mehmet Tankut Özgen; Temel Engin Tuncer

doi:10.1117/1.1737785

1 June 2004 Object reconstruction from in-line Fresnel holograms without explicit depth focusing

Mehmet Tankut Özgen, Temel Engin Tuncer

Author Affiliations +

Optical Engineering, Vol. 43, Issue 6, (June 2004). https://doi.org/10.1117/1.1737785

Abstract

We propose two computational techniques for extracting object cross-sectional shape information from digitized in-line Fresnel holograms that do not require prior knowledge of object depths but recover relative depth information along the way. The first algorithm is applicable to hologram segments involving a single particle only. It is based on estimating Fourier transform magnitude and phase of the particle from those of the hologram segment. The second algorithm conducts a joint inverse filtering and depth search procedure so as to minimize (or maximize) a binariness (or a concentration) criterion defined over the output object function. It is applicable to multiple-particle, multiexposure holograms as well. The proposed techniques are illustrated on synthesized holograms and their practical limitations are discussed.

©(2004) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Mehmet Tankut Özgen and Temel Engin Tuncer "Object reconstruction from in-line Fresnel holograms without explicit depth focusing," Optical Engineering 43(6), (1 June 2004). https://doi.org/10.1117/1.1737785

Published: 1 June 2004

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