Extended focused imaging for digital holograms of macroscopic three-dimensional objects |
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Authors: | McElhinney Conor P Hennelly Bryan M Naughton Thomas J |
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Affiliation: | Department of Computer Science, National University of Ireland, Maynooth, County Kildare, Ireland. conormce@cs.nuim.ie |
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Abstract: | When a digital hologram is reconstructed, only points located at the reconstruction distance are in focus. We have developed a novel technique for creating an in-focus image of the macroscopic objects encoded in a digital hologram. This extended focused image is created by combining numerical reconstructions with depth information extracted by using our depth-from-focus algorithm. To our knowledge, this is the first technique that creates extended focused images of digital holograms encoding macroscopic objects. We present results for digital holograms containing low- and high-contrast macroscopic objects. |
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