Art Painting Diagnostic Before Restoration with Terahertz and Millimeter Waves


Art painting diagnostic is commonly performed using electromagnetic waves at wavelengths from terahertz to X-ray. These former techniques are essential in conservation and art history research, but they could be also very useful for restoring artwork. While most studies use time domain imaging technique, in this study, a painting has been investigated using both time domain imaging (TDI) and frequency-modulated continuous wave (FMCW) system in the millimeter frequency range. By applying these systems to a painting of the eighteenth century, we detect and analyze the structure of some defects. This study underlines the differences between FMCW and TDI. We present the advantages and disadvantages of each technique on a real artwork.

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The authors would like to thank the owner of that painting who agreed to make it available for research experiments at the IMS laboratory during the diagnostic before restoration.

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Correspondence to Jean-Paul Guillet.

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Guillet, J., Roux, M., Wang, K. et al. Art Painting Diagnostic Before Restoration with Terahertz and Millimeter Waves. J Infrared Milli Terahz Waves 38, 369–379 (2017).

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  • Terahertz imaging
  • Art restoration
  • Painting
  • Time domain imaging
  • Frequency-modulated continuous wave