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. SPIE Proceedings, 7442.

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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
Keywords: Digital holography; Optics; imaging; FFT;
Academic Unit: Faculty of Science and Engineering > Computer Science
Item ID: 2363
Depositing User: Thomas Naughton
Date Deposited: 19 Jan 2011 14:50
Journal or Publication Title: SPIE Proceedings
Publisher: SPIE
Refereed: Yes

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