1. Accurate Measurements of Spectral Reflectance in Picasso's Guernica Painting.
- Author
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de Luna, Javier Muñoz, Fernandez-Balbuena, Antonio Alvarez, Vázquez, Daniel, Melgosa, Manuel, Durán, Humberto, García, Jorge, and Muro, Carmen
- Subjects
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SPECTRAL reflectance measurement , *WORKS of art in art , *COLORIMETRIC analysis , *PAINTING , *REFLECTANCE - Abstract
The use of non-invasive spectral measurements to control the conservation status is a part of the preventive conservation of artworks which nowadays is becoming increasingly interesting. This paper describes how to use a spectral measuring device and an illumination system specifically designed for such a task in a very large dimension artwork painting (7.8 m wide x 3.5 m high). The system, controlled by a Cartesian robot, allows spectral measurements in a spectral range of 400-780 nm. The measured data array has a total of 2201 circular regions with 5.5 mm spot diameter placed on a square grid. Colorimetric calculations performed from these spectral measurements may be used to characterize color shifts related to reflectance changes in specific areas of the paint. A color shifting from the expected gray has been shown. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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