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      • Department of Electrical and Electronics Engineering
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      Digital decoding of in-line holograms

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      Author(s)
      Onural, L.
      Scott, P. D.
      Date
      1987
      Source Title
      Optical Engineering
      Print ISSN
      0091-3286
      Publisher
      SPIE
      Volume
      26
      Issue
      11
      Pages
      1124 - 1132
      Language
      English
      Type
      Article
      Item Usage Stats
      325
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      Abstract
      Digitally sampled in-line holograms may be linearly filtered to reconstruct a representation of the original object distribution, thereby decoding the information contained in the hologram. The decoding process is performed by digital computation rather than optically. Substitution of digital for optical decoding has several advantages, including selective suppression of the twin-image artifact, elimination of the far-field requirement, and automation of the data reduction and analysis process. The proposed filter is a truncated series expansion of the inverse of that operator that maps object opacity function to hologram intensity. The first term of the expansion is shown to be equivalent to conventional (optical) reconstruction, with successive terms increasingly suppressing the twin image. The algorithm is computationally efficient, requiring only a single fast Fourier transform pair.
      Keywords
      In-line holography
      Digital holography
      Image processing
      Inverse filtering
      Permalink
      http://hdl.handle.net/11693/26280
      Published Version (Please cite this version)
      https://doi.org/10.1117/12.7974205
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      • Department of Electrical and Electronics Engineering 4011
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