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Quantitative Hyperspectral Reflectance Imaging.

Marvin E Klein1, Bernard J Aalderink2, Roberto Padoan3

  • 1Art Innovation B.V., Zutphenstraat 25, 7575 EJ Oldenzaal, The Netherlands. info@art-innovation.nl.

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|November 23, 2016
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Summary
This summary is machine-generated.

Hyperspectral imaging offers a non-destructive method to analyze historical documents, revealing material details and degradation invisible to standard photography. This technique aids in preserving cultural heritage by understanding material properties and environmental impacts.

Keywords:
Spectral imagingclassificationfeature extractionhistorical documenthyperspectral imagingreflectance imaging

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Area of Science:

  • Optical analysis
  • Cultural heritage science
  • Document analysis

Background:

  • Conventional photography has limitations in analyzing historical documents.
  • Hyperspectral imaging provides detailed material information non-destructively.
  • Understanding material degradation is crucial for cultural heritage preservation.

Purpose of the Study:

  • To describe a laboratory hyperspectral imager for historical document analysis.
  • To demonstrate its capability in material recognition and degradation detection.
  • To enable quantitative analysis of spectral data for conservation purposes.

Main Methods:

  • Development of a laboratory hyperspectral imager (365-1100 nm).
  • Use of a tunable narrow-bandwidth light source to minimize light-induced degradation.
  • Analysis of calibrated spectral reflectance images, including quantitative data extraction.

Main Results:

  • The instrument successfully measures spectral reflectance across 70 wavelengths.
  • Basic and advanced data analysis techniques can distinguish inks and assess degradation.
  • The imager is actively used by the National Archives of The Netherlands for document analysis.

Conclusions:

  • Hyperspectral imaging is a powerful tool for non-destructive analysis of historical documents.
  • The developed instrument enables detailed material characterization and degradation assessment.
  • This technology supports the long-term preservation of cultural heritage through informed conservation strategies.