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Speed up of Fresnel transforms for Digital holography using pre-computation

Pandey, Nitesh and Hennelly, Bryan M. and Kelly, Damien P. and Naughton, Thomas J. (2009) Speed up of Fresnel transforms for Digital holography using pre-computation. Proceedings of the China-Ireland Information and Communications Technology Conference (CIICT 2009). ISBN 9780901519672. pp. 234-236.

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Abstract

We show how the common Fresnel reconstruction of digital holograms can be speeded up on ordinary computers by precomputing the two chirp factors for a given detector array size and then calling these values from memory during the reconstruction. The speedup in time is shown for various hologram sizes. We also run the same algorithm on a Nvidia GPU using Matlab.

Item Type: Article
Additional Information: The research leading to these results has received funding from the European Community's Seventh Framework Programme FP7/2007-2013 under grant agreement no. 216105.We also acknowledge Science Foundation Ireland under the National Development Plan.
Keywords: Digital holography; Optics; imaging; FFT;
Subjects: Science & Engineering > Computer Science
Item ID: 2408
Depositing User: Dr. Thomas Naughton
Date Deposited: 01 Feb 2011 16:44
Journal or Publication Title: Proceedings of the China-Ireland Information and Communications Technology Conference (CIICT 2009). ISBN 9780901519672
Publisher: National University of Ireland Maynooth
Refereed: Yes
URI:

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