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Optimal wavelength selection in laser scanning systems for improved spectral estimation of object reflectances and colors

From National Research Council Canada

AuthorSearch for: 1
Affiliation
  1. National Research Council Canada
SponsorSearch for: Society for Imaging Science and Technology
FormatText, Article
ConferenceCGIV 2002: First European Conference on Color in Graphics, Imaging and Vision, April 2002, Poitiers, France
Abstract
Optimal sampling wavelengths are investigated for the application of spectral estimation methods for color measurement with 3D laser scanning systems. Methods based on principal component analysis and on spline interpolation are considered. Unconstrained optimizations of the average ΔE94 color difference over large sets of reflectance curves are used to derive the optimal sets of 3 to 6 sampling wavelengths. It is found that the PCA method is slightly better than the spline method overall, and that the ΔE94 errors are reduced roughly by one half when the number of sampling wavelengths increases by one. Four or five sampling wavelengths become sufficient to bring the average error below the one just noticeable difference benchmark. Spectral estimation with 5 optimal wavelengths using the principal components derived from the OSA-UCS catalog appears adequate for the most demanding applications.
Publication date
PublisherSociety for Imaging Science and Technology
In
  • Conference on Colour in Graphics, Imaging, and Vision, CGIV 2002 Final Program and Proceedings: 623–626.
LanguageEnglish
NRC numberNRC-INMS-361
NRC-INMS-361
NPARC number8896338
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Record identifier2e3b730f-7942-4056-b64a-0b7cb15cc918
Record created2009-04-22
Record modified2021-09-17
Date modified: