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Article: High-resolution lightfield photography using two masks

TitleHigh-resolution lightfield photography using two masks
Authors
KeywordsAfter-images
Camera sensor
Computational photography
High resolution
Imaging capabilities
Issue Date2012
PublisherOptical Society of America. The Journal's web site is located at http://www.opticsexpress.org
Citation
Optics Express, 2012, v. 20 n. 10, p. 10971-10983 How to Cite?
AbstractA major theme of computational photography is the acquisition of lightfield, which opens up new imaging capabilities, such as focusing after image capture. However, to capture the lightfield, one normally has to sacrifice significant spatial resolution as compared to normal imaging for a fixed sensor size. In this work, we present a new design for lightfield acquisition, which allows for the capture of a higher resolution lightfield by using two attenuation masks. They are positioned at the aperture stop and the optical path respectively, so that the four-dimensional (4D) lightfield spectrum is encoded and sampled by a two-dimensional (2D) camera sensor in a single snapshot. Then, during post-processing, by exploiting the coherence embedded in a lightfield, we can retrieve the desired 4D lightfield with a higher resolution using inverse imaging. The performance of our proposed method is demonstrated with simulations based on actual lightfield datasets. © 2012 Optical Society of America.
Persistent Identifierhttp://hdl.handle.net/10722/155759
ISSN
2014 Impact Factor: 3.488
2013 SCImago Journal Rankings: 2.668
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXu, Zen_US
dc.contributor.authorKe, Jen_US
dc.contributor.authorLam, EYen_US
dc.date.accessioned2012-08-08T08:35:12Z-
dc.date.available2012-08-08T08:35:12Z-
dc.date.issued2012en_US
dc.identifier.citationOptics Express, 2012, v. 20 n. 10, p. 10971-10983en_US
dc.identifier.issn1094-4087en_US
dc.identifier.urihttp://hdl.handle.net/10722/155759-
dc.description.abstractA major theme of computational photography is the acquisition of lightfield, which opens up new imaging capabilities, such as focusing after image capture. However, to capture the lightfield, one normally has to sacrifice significant spatial resolution as compared to normal imaging for a fixed sensor size. In this work, we present a new design for lightfield acquisition, which allows for the capture of a higher resolution lightfield by using two attenuation masks. They are positioned at the aperture stop and the optical path respectively, so that the four-dimensional (4D) lightfield spectrum is encoded and sampled by a two-dimensional (2D) camera sensor in a single snapshot. Then, during post-processing, by exploiting the coherence embedded in a lightfield, we can retrieve the desired 4D lightfield with a higher resolution using inverse imaging. The performance of our proposed method is demonstrated with simulations based on actual lightfield datasets. © 2012 Optical Society of America.en_US
dc.languageengen_US
dc.publisherOptical Society of America. The Journal's web site is located at http://www.opticsexpress.orgen_US
dc.relation.ispartofOptics Expressen_US
dc.rightsThis paper was published in [Optics Express] and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: [http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-20-10-10971]. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectAfter-images-
dc.subjectCamera sensor-
dc.subjectComputational photography-
dc.subjectHigh resolution-
dc.subjectImaging capabilities-
dc.titleHigh-resolution lightfield photography using two masksen_US
dc.typeArticleen_US
dc.identifier.emailKe, J: junke@eee.hku.hken_US
dc.identifier.emailLam, EY: elam@eee.hku.hk-
dc.identifier.authorityLam, EY=rp00131en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1364/OE.20.010971en_US
dc.identifier.pmid22565720-
dc.identifier.scopuseid_2-s2.0-84861120126en_US
dc.identifier.hkuros200968-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84861120126&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume20en_US
dc.identifier.issue10en_US
dc.identifier.spage10971en_US
dc.identifier.epage10983en_US
dc.identifier.isiWOS:000303879700059-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLam, EY=7102890004en_US
dc.identifier.scopusauthoridKe, J=9045258900en_US
dc.identifier.scopusauthoridXu, Z=26640797900en_US

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