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Article: High-resolution lightfield photography using two masks
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TitleHigh-resolution lightfield photography using two masks
 
AuthorsXu, Z1
Ke, J1
Lam, EY1
 
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
 
CitationOptics Express, 2012, v. 20 n. 10, p. 10971-10983 [How to Cite?]
DOI: http://dx.doi.org/10.1364/OE.20.010971
 
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.
 
ISSN1094-4087
2013 Impact Factor: 3.525
2013 SCImago Journal Rankings: 2.668
 
DOIhttp://dx.doi.org/10.1364/OE.20.010971
 
ISI Accession Number IDWOS:000303879700059
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorXu, Z
 
dc.contributor.authorKe, J
 
dc.contributor.authorLam, EY
 
dc.date.accessioned2012-08-08T08:35:12Z
 
dc.date.available2012-08-08T08:35:12Z
 
dc.date.issued2012
 
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.
 
dc.description.naturepublished_or_final_version
 
dc.identifier.citationOptics Express, 2012, v. 20 n. 10, p. 10971-10983 [How to Cite?]
DOI: http://dx.doi.org/10.1364/OE.20.010971
 
dc.identifier.doihttp://dx.doi.org/10.1364/OE.20.010971
 
dc.identifier.epage10983
 
dc.identifier.hkuros200968
 
dc.identifier.isiWOS:000303879700059
 
dc.identifier.issn1094-4087
2013 Impact Factor: 3.525
2013 SCImago Journal Rankings: 2.668
 
dc.identifier.issue10
 
dc.identifier.pmid22565720
 
dc.identifier.scopuseid_2-s2.0-84861120126
 
dc.identifier.spage10971
 
dc.identifier.urihttp://hdl.handle.net/10722/155759
 
dc.identifier.volume20
 
dc.languageeng
 
dc.publisherOptical Society of America. The Journal's web site is located at http://www.opticsexpress.org
 
dc.publisher.placeUnited States
 
dc.relation.ispartofOptics Express
 
dc.relation.referencesReferences in Scopus
 
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 masks
 
dc.typeArticle
 
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<subject>After-images</subject>
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Author Affiliations
  1. The University of Hong Kong