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A Workflow-Driven Multisensor Scanning System for In Situ Extensive Hyperspectral Chemical Imaging of Paintings.

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|December 17, 2025
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This study presents a new multisensor system for in-situ chemical imaging of painted surfaces. The workflow integrates X-ray fluorescence, UV-induced fluorescence, and FT-IR spectroscopy for detailed elemental and molecular analysis of artworks.

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Area of Science:

  • Art conservation science
  • Analytical chemistry
  • Imaging spectroscopy

Background:

  • Accurate chemical characterization of painted surfaces is crucial for art conservation and authentication.
  • Existing methods may lack the comprehensive elemental and molecular information needed for detailed analysis.
  • In-situ analysis is preferred to avoid sample damage and preserve artwork integrity.

Purpose of the Study:

  • To develop and validate a novel workflow-driven multisensor scanning system for in-situ hyperspectral chemical imaging of painted surfaces.
  • To integrate multiple spectroscopic techniques for simultaneous elemental and molecular composition analysis.
  • To enable precise positioning and accurate alignment of hyperspectral and visible images for comprehensive artwork analysis.

Main Methods:

  • Development of a workflow-driven multisensor scanning system.
  • Integration of X-ray fluorescence (XRF), UV-induced fluorescence (UVF), and Fourier-transform infrared (FT-IR) spectroscopy.
  • Utilization of a remotely controlled three-axis scanner with a laser sensor for precise positioning.
  • Implementation of dedicated software for accurate image alignment.

Main Results:

  • The system successfully performed in-situ hyperspectral chemical imaging of painted surfaces.
  • Combined elemental (XRF) and molecular (FT-IR, UVF) data provided comprehensive composition insights.
  • Precise positioning and image alignment were achieved, facilitating detailed analysis.
  • The system was effectively demonstrated on a historical artwork.

Conclusions:

  • The novel multisensor system offers a powerful tool for non-invasive, in-situ chemical imaging of artworks.
  • Integration of multiple spectroscopic techniques enhances the depth of compositional analysis.
  • This approach facilitates more informed decision-making in art conservation and research.