Background removal from polarized Raman spectra of tooth enamel using the wavelet transform

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DOIResolve DOI: http://doi.org/10.1002/jrs.2761
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TypeArticle
Journal titleJournal of Raman Spectroscopy
Volume42
Issue4
Pages580585; # of pages: 6
Subjectwavelet transform; enamel; caries; background removal
AbstractA wavelet transformation method is introduced to remove the large fluorescence background from polarized Raman spectra of stained tooth enamel. This method exploits the wavelet multiresolution decomposition where the experimental Raman spectrum is decomposed into signals with different frequency components, and where the lowest frequency background and highest frequency noise are removed. This method is optimized using a simulated collection of parallel-polarized and cross-polarized Raman spectra of the enamel and then applied to a set of experimental data. The results show that the wavelet transform technique can extract the pure spectra from background and noise, with the depolarization ratio used to discriminate between early dental caries and sound enamel preserved.
Publication date
LanguageEnglish
AffiliationNRC Institute for Biodiagnostics; National Research Council Canada
Peer reviewedYes
NPARC number19689669
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Record identifier894e2374-f974-4cfe-a360-8039fdd3e302
Record created2012-03-22
Record modified2016-05-09
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