25 October 2011 Near IR diodes as illumination sources to remotely detect under-drawings on century-old paintings
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Abstract
Mexico possesses a large cultural heritage of paintings, elaborated after the European explorers encountered the New World. The interest in documenting these treasures was recently renewed, with the development of nondestructive remote techniques. We examined an undocumented painting for the presence of any invisible signatures, dates, or under-drawings. We employed several illumination-detection schemes, including IR broadband and LED arrays to achieve this purpose. We made visible the signature at about 1 μm and the date at 1.2 μm.
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Marija Strojnik, Marija Strojnik, Gonzalo Paez, Gonzalo Paez, Antonio Ortega, Antonio Ortega, "Near IR diodes as illumination sources to remotely detect under-drawings on century-old paintings", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 801177 (25 October 2011); doi: 10.1117/12.902160; https://doi.org/10.1117/12.902160
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