The image is taken from the paper “An automatic method for assembling a large synthetic aperture digital hologram” by A. Pelagotti, M. Paturzo, M. Locatelli, A. Geltrude, R. Meucci, A. Finizio, and P. Ferraro, recently published on Optics Express, Vol. 20, Issue 5, pp. 4830-4839 (2012)
http://dx.doi.org/10.1364/OE.20.004830. It demonstrates one of the possibilities offered by the large holograms obtained by automatically stitching the single holograms acquired, according to the algorithm described in the paper.
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