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Proceedings Paper

An autometed method for increasing the numerical aperture of a digital holography recording system
Author(s): Anna Pelagotti; Melania Paturzo; Massimiliano Locatelli; Andrea Geltrude; Andrea Finizio; Pietro Ferraro; Grzegorz Finke; Malgorzata Kujawinska
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Paper 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.

Paper Details

Date Published: 23 May 2011
PDF: 9 pages
Proc. SPIE 8083, Modeling Aspects in Optical Metrology III, 80830Y (23 May 2011);
Show Author Affiliations
Anna Pelagotti, Istituto Nazionale di Ottica Applicata (Italy)
Melania Paturzo, Istituto Nazionale di Ottica Applicata (Italy)
Massimiliano Locatelli, Istituto Nazionale di Ottica Applicata (Italy)
Lab. Europeo di Spettroscopia Non Lineare, CNR, Univ. di Firenze (Italy)
Andrea Geltrude, Istituto Nazionale di Ottica Applicata (Italy)
Andrea Finizio, Istituto Nazionale di Ottica Applicata (Italy)
Pietro Ferraro, Istituto Nazionale di Ottica Applicata (Italy)
Grzegorz Finke, Warsaw Univ. of Technology (Poland)
Malgorzata Kujawinska, Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 8083:
Modeling Aspects in Optical Metrology III
Bernd Bodermann, Editor(s)

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