Examples of SVD decomposition contributions to the non-destructive testing of cultural heritage mural paintings using stimulated infrared thermography

Abstract

Stimulated infrared thermography has already shown its possibilities concerning the heritage mural paintings conservation. However, the different colors of the pictorial layer can, in certain unfavorable cases, lead to artefacts detection. Moreover, the fragility of these works of art requires the least energetic analyzes possible. In the work presented here, we show that the association of an SVD analysis with stimulated infrared thermography, seems to allow on the one hand, a notable reduction of this disturbing optical effect. We show on the other hand, that it seems to allow an early detection of these defects and therefore a lower energy deposit on studied works of art.