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Quantifying the 2.5D imaging performance of digital holographic systems
Kelly, D.P.; Healy, J.J.; Hennelly, Bryan M.; Sheridan, J. T.
Digital holographic systems are a class of two step, opto-numerical, three-dimensional imaging techniques. The role of the digital camera in limiting the resolution and field of view of the reconstructed image, and the interaction of these limits with a general optical system is poorly understood. The linear canonical transform describes any optical system consisting of lenses and/or free space in a unified manner. Expressions derived using it are parametrised in terms of the parameters of the optical system, as well as those of the digital camera: aperture size, pixel size and pixel pitch. We develop rules of thumb for selecting an optical system to minimise mean squared error for given input and digital camera parameters. In the limit, our results constitute a point spread function analysis. The results presented in this paper will allow digital holography practitioners to select an optical system to maximise the quality of their reconstructed image using a priori knowledge of the camera and object.
Keyword(s): Computer Science; Electronic Engineering; digital holography; imaging systems; super-resolution; digital optics; phase space optics; signal processing; sampling
Publication Date:
Type: Journal article
Peer-Reviewed: Yes
Institution: Maynooth University
Citation(s): Kelly, D.P. and Healy, J.J. and Hennelly, Bryan M. and Sheridan, J. T. (2011) Quantifying the 2.5D imaging performance of digital holographic systems. Journal of the European Optical Society, 6 (11034). pp. 1-14. ISSN 1990-2573
Publisher(s): Rapid Publications
File Format(s): other
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First Indexed: 2020-01-31 06:23:32 Last Updated: 2020-04-02 06:56:53