23 May 2011 An autometed method for increasing the numerical aperture of a digital holography recording system
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Abstract
A major issue so far for digital holography has been the limited number of pixels of currently available detectors, such as CCD sensors, which allows a spatial resolution significantly lower than that of a holographic plate. This is an even more sever limitation when IR sensors such as microbolometers are taken into consideration. In order to increase the numerical aperture of such systems, we developed an automatic technique which is capable to record several holograms and stitch them together before reconstruction. This method can cope with some of the inherent differences of the image structures and tone dynamics of recorded holograms. The joint holograms have been applied for reconstruction of an image by means of numerical and optoelectronic reconstruction processes and they show significant increase of quality.
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Anna Pelagotti, Anna Pelagotti, Melania Paturzo, Melania Paturzo, Massimiliano Locatelli, Massimiliano Locatelli, Andrea Geltrude, Andrea Geltrude, Andrea Finizio, Andrea Finizio, Pietro Ferraro, Pietro Ferraro, Grzegorz Finke, Grzegorz Finke, Malgorzata Kujawinska, Malgorzata Kujawinska, } "An autometed method for increasing the numerical aperture of a digital holography recording system", Proc. SPIE 8083, Modeling Aspects in Optical Metrology III, 80830Y (23 May 2011); doi: 10.1117/12.889834; https://doi.org/10.1117/12.889834
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