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Article: Analysis of displacement errors in high-resolution image reconstruction with multisensors

TitleAnalysis of displacement errors in high-resolution image reconstruction with multisensors
Authors
KeywordsElectronics engineering - electrical engineering
Issue Date2002
PublisherIEEE.
Citation
IEEE Transactions on Circuits and Systems Part 1: Fundamental Theory and Applications, 2002, v. 49 n. 6, p. 806-813 How to Cite?
AbstractAn image-acquisition system composed of an array of sensors, where each sensor has a subarray of sensing elements of suitable size, has recently been popular for increasing the spatial resolution with high signal-to-noise ratio beyond the performance bound of technologies that constrain the manufacture of imaging devices. Small perturbations around the ideal subpixel locations of the sensing elements (responsible for capturing the sequence of undersampled degraded frames), because of imperfections in fabrication, limit the performance of the signal-processing algorithms for processing and integrating the acquired images for the desired enhanced resolution and quality. The contributions of this paper include an analysis of the displacement errors on the convergence rate of the iterative approach for solving the transform based preconditioned system of equations. Subsequently, it is established that the use of the MAP, L2 norm or H1 norm regularization functional leads to a proof of linear convergence of the conjugate gradient method in terms of the displacement errors caused by the imperfect subpixel locations. Results of simulation support the analytical results.
Persistent Identifierhttp://hdl.handle.net/10722/43000
ISSN
2006 Impact Factor: 1.139
2006 SCImago Journal Rankings: 1.111
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorNg, MKPen_HK
dc.contributor.authorBose, NKen_HK
dc.date.accessioned2007-03-23T04:36:34Z-
dc.date.available2007-03-23T04:36:34Z-
dc.date.issued2002en_HK
dc.identifier.citationIEEE Transactions on Circuits and Systems Part 1: Fundamental Theory and Applications, 2002, v. 49 n. 6, p. 806-813en_HK
dc.identifier.issn1057-7122en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43000-
dc.description.abstractAn image-acquisition system composed of an array of sensors, where each sensor has a subarray of sensing elements of suitable size, has recently been popular for increasing the spatial resolution with high signal-to-noise ratio beyond the performance bound of technologies that constrain the manufacture of imaging devices. Small perturbations around the ideal subpixel locations of the sensing elements (responsible for capturing the sequence of undersampled degraded frames), because of imperfections in fabrication, limit the performance of the signal-processing algorithms for processing and integrating the acquired images for the desired enhanced resolution and quality. The contributions of this paper include an analysis of the displacement errors on the convergence rate of the iterative approach for solving the transform based preconditioned system of equations. Subsequently, it is established that the use of the MAP, L2 norm or H1 norm regularization functional leads to a proof of linear convergence of the conjugate gradient method in terms of the displacement errors caused by the imperfect subpixel locations. Results of simulation support the analytical results.en_HK
dc.format.extent346988 bytes-
dc.format.extent26112 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2002 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.subjectElectronics engineering - electrical engineeringen_HK
dc.titleAnalysis of displacement errors in high-resolution image reconstruction with multisensorsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1057-7122&volume=49&issue=6&spage=806&epage=813&date=2002&atitle=Analysis+of+displacement+errors+in+high-resolution+image+reconstruction+with+multisensorsen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/TCSI.2002.1010035en_HK
dc.identifier.scopuseid_2-s2.0-0036601134-
dc.identifier.hkuros76488-
dc.identifier.isiWOS:000176255700010-

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