Application of Up-Sampling and Resolution Scaling to Fresnel Reconstruction of Digital HologramsApplied Optics
AbstractFresnel transform implementation methods using numerical preprocessing techniques are investigated in this paper. First, it is shown that up-sampling dramatically reduces the minimum reconstruction distance requirements and allows maximal signal recovery by eliminating aliasing artifacts which typically occur at distances much less than the Rayleigh range of the object. Second, zero-padding is employed to arbitrarily scale numerical resolution for the purpose of resolution matching multiple holograms, where each hologram is recorded using dissimilar geometric or illumination parameters. Such preprocessing yields numerical resolution scaling at any distance. Both techniques are extensively illustrated using experimental results.
CopyrightCopyright © 2015, Optical Society of America
PublisherOptical Society of America
Citation InformationLogan Williams, George Nehmetallah, Rola Aylo and Partha P. Banerjee. "Application of Up-Sampling and Resolution Scaling to Fresnel Reconstruction of Digital Holograms" Applied Optics Vol. 54 Iss. 6 (2015)
Available at: http://works.bepress.com/partha_banerjee/30/