Four-flux model combined with optical coherence tomography technique for non-destructive testing of the colour ground layers of the paintings

Xiang Wang*, Andrei Anisimov, Roger M. Groves

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

22 Downloads (Pure)

Abstract

The colour of the ground layers of a painting has an influence on its visual appearance. In addition to the commonly used white ground layers, other colour ground layers have been used, for example, the grey ground layer used in Peter Paul Rubens’s painting Portrait of Clara Serena Rubens helps the colour transition of the skin tones. Understanding the effects caused by the colours of the ground layers is of significance for both technical art history and conservation. Optical non-destructive testing (NDT) techniques are useful tools for the investigation of paintings, for example, optical coherence tomography (OCT) can be used to study the surface and subsurface layers non-destructively. In this work, the interaction of light with paint and ground layers is modelled to supplement OCT measurements of paintings with ground layers. A previously described near-infrared light range OCT system provides high spatial and depth resolution measurements. A four-flux model has been developed for analysing the light interaction in the paint and ground layers. This model considers forwards-propagating collimated light, backwards-propagating collimated light, forwards-propagating diffuse light and backwards-propagating diffuse light. The model uses the optical material properties, including refractive index (RI), absorption and layer thickness, as input. This paper describes the construction of the model and an evaluation of its performance by comparison with OCT data.

Original languageEnglish
Title of host publicationOptics for Arts, Architecture, and Archaeology (O3A) IX
EditorsHaida Liang, Roger Groves
PublisherSPIE
Number of pages8
ISBN (Electronic)9781510664494
DOIs
Publication statusPublished - 2023
EventOptics for Arts, Architecture, and Archaeology (O3A) IX 2023 - Munich, Germany
Duration: 26 Jun 202327 Jun 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12620
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptics for Arts, Architecture, and Archaeology (O3A) IX 2023
Country/TerritoryGermany
CityMunich
Period26/06/2327/06/23

Keywords

  • colour
  • Four-flux model
  • ground layer
  • non-destructive testing
  • painting

Fingerprint

Dive into the research topics of 'Four-flux model combined with optical coherence tomography technique for non-destructive testing of the colour ground layers of the paintings'. Together they form a unique fingerprint.

Cite this