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Holographic representation: Hologram plane vs. object plane

2018Journal article Open access
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dc.contributor.authorBernardo, Marco V.
dc.contributor.authorFernandes, Pedro
dc.contributor.authorArrifano, Ângelo Miguel
dc.contributor.authorAntonini, Marc
dc.contributor.authorFonseca, Elsa
dc.contributor.authorFiadeiro, Paulo
dc.contributor.authorPinheiro, Antonio M. G.
dc.contributor.authorPereira, Manuela
dc.date.accessioned2020-02-13T16:55:22Z
dc.date.available2020-02-13T16:55:22Z
dc.date.issued2018
dc.description.abstractDigital holography allows the recording, storage and subsequent reconstruction of both amplitude and phase of the light field scattered by an object. This is accomplished by recording interference patterns that preserve the properties of the original object field essential for 3D visualization, the so-called holograms. Digital holography refers to the acquisition of holograms with a digital sensor, typically a CCD or a CMOS camera, and to the reconstruction of the 3D object field using numerical methods. In the current work, the different representations of digital holographic information in the hologram and in the object planes are studied. The coding performance of the different complex field representations, notably Amplitude-Phase and Real-Imaginary, in both the hologram plane and the object plane, is assessed using both computer generated and experimental holograms. The HEVC intra main coding profile is used for the compression of the different representations in both planes, either for experimental holograms or computer generated holograms. The HEVC intra compression in the object plane outperforms encoding in the hologram plane. Furthermore, encoding computer generated holograms in the object plane has a larger benefit than the same encoding over the experimental holograms. This difference was expected, since experimental holograms are affected by a larger negative influence of speckle noise, resulting in a loss of compression efficiency. This work emphasizes the possibility of holographic coding on the object plane, instead of the common encoding in the hologram plane approach. Moreover, this possibility allows direct visualization of the Object Plane Amplitude in a regular 2D display without any transformation methods. The complementary phase information can easily be used to render 3D features such as depth map, multi-view or even holographic interference patterns for further 3D visualization depending on the display technology.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/9261
dc.language.isoengpt_PT
dc.subjectDigital holographypt_PT
dc.subjectHolographic representationpt_PT
dc.subjectHEVC codecpt_PT
dc.subjectNumerical reconstruction of hologramspt_PT
dc.subjectHologram planept_PT
dc.subjectObject planept_PT
dc.titleHolographic representation: Hologram plane vs. object planept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEEA%2F50008%2F2013/PT
oaire.citation.titleSignal Processing: Image Communicationpt_PT
oaire.fundingStream5876
person.familyNameVIEIRA ANDRADE BERNARDO
person.familyNamedos Reis da Fonseca
person.familyNameTorrão Fiadeiro
person.familyNamePinheiro
person.familyNamePereira
person.givenNameMARCO ANDRÉ
person.givenNameElsa Susana
person.givenNamePaulo
person.givenNameAntonio
person.givenNameManuela
person.identifierJ-2017-2012
person.identifier.ciencia-idE617-3633-CC0F
person.identifier.ciencia-id2C1F-AF83-8CCF
person.identifier.ciencia-id6E10-CB9A-419F
person.identifier.ciencia-id2218-265E-17D2
person.identifier.ciencia-id0515-7E9C-B97F
person.identifier.orcid0000-0003-0046-8685
person.identifier.orcid0000-0002-1531-8789
person.identifier.orcid0000-0002-7374-3636
person.identifier.orcid0000-0002-5968-9901
person.identifier.orcid0000-0002-8648-6464
person.identifier.ridB-2723-2012
person.identifier.scopus-author-id6506761628
person.identifier.scopus-author-id8420644500
person.identifier.scopus-author-id35248984200
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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