Sparsity based Terahertz reflective off-axis digital holography

DC FieldValueLanguage
dc.contributor.authorWan, Min-
dc.contributor.authorMuniraj, Inbarasan-
dc.contributor.authorMalallah, Ra'ed-
dc.contributor.authorZhao, Liang-
dc.contributor.authorRyle, James P.-
dc.contributor.authorRong, Lu-
dc.contributor.authorHealy, John J.-
dc.contributor.authorWang, Dayong-
dc.contributor.authorSheridan, John T.-
dc.date.accessioned2017-08-17T15:47:17Z-
dc.date.available2017-08-17T15:47:17Z-
dc.date.copyright2017 SPIEen
dc.date.issued2017-04-24-
dc.identifier.urihttp://hdl.handle.net/10197/8721-
dc.descriptionHolography: Advances and Modern Trends V, Prague, Czech Republic, 24 April 2017en
dc.description.abstractTerahertz radiation lies between the microwave and infrared regions in the electromagnetic spectrum. Emitted frequencies range from 0.1 to 10 THz with corresponding wavelengths ranging from 30 m to 3 mm. In this paper, a continuous-wave Terahertz off-axis digital holographic system is described. A Gaussian fitting method and image normalisation techniques were employed on the recorded hologram to improve the image resolution. A synthesised contrast enhanced hologram is then digitally constructed. Numerical reconstruction is achieved using the angular spectrum method of the filtered off-axis hologram. A sparsity based compression technique is introduced before numerical data reconstruction in order to reduce the dataset required for hologram reconstruction. Results prove that a tiny amount of sparse dataset is sufficient in order to reconstruct the hologram with good image quality.en
dc.description.sponsorshipScience Foundation Irelanden
dc.language.isoenen
dc.publisherSociety of Photo-optical Instrumentation Engineers (SPIE)en
dc.relation.ispartofHrabovsk√Ĺ, M., Sheridan, J. T. and Fimia, F. (eds.). Holography: Advances and Modern Trends V (Volume 10233)en
dc.subjectPersonal sensingen
dc.subjectTerahertz imagingen
dc.subjectDigital holographyen
dc.subjectSparsityen
dc.titleSparsity based Terahertz reflective off-axis digital holographyen
dc.typeConference Publicationen
dc.statusPeer revieweden
dc.identifier.doi10.1117/12.2264788-
dc.identifier.doi10.1117/12.2265686-
dc.neeo.contributorWan|Min|aut|-
dc.neeo.contributorMuniraj|Inbarasan|aut|-
dc.neeo.contributorMalallah|Ra'ed|aut|-
dc.neeo.contributorZhao|Liang|aut|-
dc.neeo.contributorRyle|James P.|aut|-
dc.neeo.contributorRong|Lu|aut|-
dc.neeo.contributorHealy|John J.|aut|-
dc.neeo.contributorWang|Dayong|aut|-
dc.neeo.contributorSheridan|John T.|aut|-
dc.description.othersponsorshipInsight Research Centreen
dc.date.updated2017-05-12T11:51:52Z-
dc.rights.licensehttps://creativecommons.org/licenses/by-nc-nd/3.0/ie/en
item.fulltextWith Fulltext-
item.grantfulltextopen-
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