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dc.contributor.authorArjona Carbonell, Mª Montserrat
dc.contributor.authorVilaseca Ricart, Meritxell
dc.contributor.authorPujol Ramo, Jaume
dc.contributor.authorMartínez Verdú, Francisco Miguel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Òptica i Optometria
dc.date.accessioned2010-07-20T11:22:33Z
dc.date.available2010-07-20T11:22:33Z
dc.date.created2004
dc.date.issued2004
dc.identifier.citationArjona, M. [et al.]. Multispectral system for recovering near-infrared reflectance spectra. A: European Conference on Colour in Graphics, Imaging and Vision. "Second European Conference on Colour in Graphics, Imaging and Vision (CGIV 2004)". Aachen: 2004, p. 409-413.
dc.identifier.isbn0-89208-250-X
dc.identifier.urihttp://hdl.handle.net/2117/8276
dc.description.abstractIn this paper, we analyze an experimental system for recovering the reflectance spectra of samples in the nearinfrared region of the spectrum (NIR, 800-1000 nm). Recently, CCD cameras with improved response in the NIR have been manufactured. It is therefore possible to use this standard instrumentation to obtain information on samples in this region. The setup used in this work consisted of a conventional multispectral system of five acquisition channels with spectral bands that were equispaced in the NIR region. An automated objective lens was used to control the exposure over the CCD. By using different F-number exposure series, we obtained sets of camera responses corresponding to a group of reference samples and analyzed the dependence of the digital output levels on the lens aperture. The reconstructions obtained for a set of textile samples show that Wiener estimation and principal component analysis provide the best results. These mathematical methods provide percentages of reconstruction close to 99.8% and RMSE values close to 0.025.
dc.format.extent5 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Ciències de la visió::Optometria
dc.subject.lcshSpectral reflectance
dc.titleMultispectral system for recovering near-infrared reflectance spectra
dc.typeConference report
dc.contributor.groupUniversitat Politècnica de Catalunya. GREO - Grup de Recerca en Enginyeria Òptica
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - author's decision
local.identifier.drac2593548
dc.description.versionPostprint (published version)
local.citation.authorArjona, M.; Vilaseca, M.; Pujol, J.; Martínez, F.
local.citation.contributorEuropean Conference on Colour in Graphics, Imaging and Vision
local.citation.pubplaceAachen
local.citation.publicationNameSecond European Conference on Colour in Graphics, Imaging and Vision (CGIV 2004)
local.citation.startingPage409
local.citation.endingPage413


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