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Low Complexity Compression and Speed Enhancement for Optical Scanning Holography

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dc.contributor.authorTsang, P. W. M.en
dc.contributor.authorPoon, Ting-Chungen
dc.contributor.authorLiu, J. Pingen
dc.contributor.authorKim, T.en
dc.contributor.authorKim, Y. S.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2016-12-08T15:49:37Zen
dc.date.available2016-12-08T15:49:37Zen
dc.date.issued2016-10-06en
dc.description.abstractIn this paper we report a low complexity compression method that is suitable for compact optical scanning holography (OSH) systems with different optical settings. Our proposed method can be divided into 2 major parts. First, an automatic decision maker is applied to select the rows of holographic pixels to be scanned. This process enhances the speed of acquiring a hologram, and also lowers the data rate. Second, each row of down-sampled pixels is converted into a one-bit representation with delta modulation (DM). Existing DM-based hologram compression techniques suffers from the disadvantage that a core parameter, commonly known as the step size, has to be determined in advance. However, the correct value of the step size for compressing each row of hologram is dependent on the dynamic range of the pixels, which could deviate significantly with the object scene, as well as OSH systems with different opical settings. We have overcome this problem by incorporating a dynamic step-size adjustment scheme. The proposed method is applied in the compression of holograms that are acquired with 2 different OSH systems, demonstrating a compression ratio of over two orders of magnitude, while preserving favorable fidelity on the reconstructed images.en
dc.description.versionPublished versionen
dc.format.extent? - ? (8) page(s)en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1038/srep34724en
dc.identifier.issn2045-2322en
dc.identifier.urihttp://hdl.handle.net/10919/73590en
dc.identifier.volume6en
dc.language.isoenen
dc.publisherNature Publishing Groupen
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000385177100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1en
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectshifting digital holographyen
dc.titleLow Complexity Compression and Speed Enhancement for Optical Scanning Holographyen
dc.title.serialScientific Reportsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Engineeringen
pubs.organisational-group/Virginia Tech/Engineering/COE T&R Facultyen
pubs.organisational-group/Virginia Tech/Engineering/Electrical and Computer Engineeringen

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