Automatic focusing in digital holography and its application to stretched holograms (Articolo in rivista)

Type
Label
  • Automatic focusing in digital holography and its application to stretched holograms (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Memmolo P. [ 1,2 ] ; Distante C. [ 3 ] ; Paturzo M. [ 1 ] ; Finizio A. [ 1 ] ; Ferraro P. [ 1 ] ; Javidi B. [ 4 ] (2011)
    Automatic focusing in digital holography and its application to stretched holograms
    in Optics letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Memmolo P. [ 1,2 ] ; Distante C. [ 3 ] ; Paturzo M. [ 1 ] ; Finizio A. [ 1 ] ; Ferraro P. [ 1 ] ; Javidi B. [ 4 ] (literal)
Pagina inizio
  • 1945 (literal)
Pagina fine
  • 1947 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 36 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 10 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Ist Nazl Ottica, CNR, I-80078 Pozzuoli, NA, Italy [ 2 ] Univ Naples Federico 2, DIBET, I-80125 Naples, Italy [ 3 ] Ist Nazl Ottica, CNR, I-73010 Arnesano, LE, Italy [ 4 ] Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA (literal)
Titolo
  • Automatic focusing in digital holography and its application to stretched holograms (literal)
Abstract
  • The searching and recovering of the correct reconstruction distance in digital holography (DH) can be a cumbersome and subjective procedure. Here we report on an algorithm for automatically estimating the in-focus image and recovering the correct reconstruction distance for speckle holograms. We have tested the approach in determining the reconstruction distances of stretched digital holograms. Stretching a hologram with a variable elongation parameter makes it possible to change the in-focus distance of the reconstructed image. In this way, the proposed algorithm can be verified at different distances by dispensing the recording of different holograms. Experimental results are shown with the aim of demonstrating the usefulness of the proposed method, and a comparative analysis has been performed with respect to other existing algorithms developed for DH. (literal)
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