Thermal imaging method to visualize a hidden painting thermally excited by far infrared radiations

T. Davin; X. Wang; A. Chabane; R. Pawelko; G. Guida; B. Serio; P. Hervé

doi:10.1117/12.2184624

30 June 2015 Thermal imaging method to visualize a hidden painting thermally excited by far infrared radiations

T. Davin, X. Wang, A. Chabane, R. Pawelko, G. Guida, B. Serio, P. Hervé

Proceedings Volume 9527, Optics for Arts, Architecture, and Archaeology V; 95270T (2015) https://doi.org/10.1117/12.2184624
Event: SPIE Optical Metrology, 2015, Munich, Germany

Abstract

The diagnosis of hidden painting is a major issue for cultural heritage. In this paper, a non-destructive active infrared thermographic technique was considered to reveal paintings covered by a lime layer. An extended infrared spectral range radiation was used as the excitation source. The external long wave infrared energy source delivered to the surface is then propagated through the material until it encounters a painting zone. Due to several thermal effects, the sample surface then presents non-uniformity patterns. Using a high sensitive infrared camera, the presence of covered pigments can thus be highlighted by the analysis of the non-stationary phenomena. Reconstituted thermal contrast images of mural samples covered by a lime layer are shown.

Citation Download Citation

T. Davin, X. Wang, A. Chabane, R. Pawelko, G. Guida, B. Serio, and P. Hervé "Thermal imaging method to visualize a hidden painting thermally excited by far infrared radiations", Proc. SPIE 9527, Optics for Arts, Architecture, and Archaeology V, 95270T (30 June 2015); https://doi.org/10.1117/12.2184624

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