Universidad Complutense de Madrid
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Point to point multispectral light projection applied to cultural heritage

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Vázquez Moliní, Daniel and Álvarez Fernández-Balbuena, Antonio and Canabal Boutureira, Héctor and García Botella, Ángel and Mayorga Pinilla, Santiago and Muro, Carmen and Galán Castreño, Teresa (2017) Point to point multispectral light projection applied to cultural heritage. Proceedings of SPIE, 10379 (10379K). 12 p.. ISSN 0277-786X

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Official URL: http://dx.doi.org/10.1117/12.2281482




Abstract

Use of new of light sources based on LED technology should allow the develop of systems that combine conservation and exhibition requirements and allow to make these art goods available to the next generations according to sustainability principles. The goal of this work is to develop light systems and sources with an optimized spectral distribution for each specific point of the art piece. This optimization process implies to maximize the color fidelity reproduction and the same time to minimize the photochemical damage. Perceived color under these sources will be similar (metameric) to technical requirements given by the restoration team uncharged of the conservation and exhibition of the goods of art. Depending of the fragility of the exposed art objects (i.e. spectral responsivity of the material) the irradiance must be kept under a critical level. Therefore, it is necessary to develop a mathematical model that simulates with enough accuracy both the visual effect of the illumination and the photochemical impact of the radiation. Spectral reflectance of a reference painting The mathematical model is based on a merit function that optimized the individual intensity of the LED-light sources taking into account the damage function of the material and color space coordinates. Moreover the algorithm used weights for damage and color fidelity in order to adapt the model to a specific museal application. In this work we show a sample of this technology applied to a picture of Sorolla (1863-1923) an important Spanish painter title “woman walking at the beach”.


Item Type:Article
Additional Information:

Vol. 10379: Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XIV 2017; San Diego; United States; 6 August 2017 through 7 August 2017; Code 132384
ISBN: 978-1-51061215-0
Copyright 2017. Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Uncontrolled Keywords:Color; Cultural heritage; LED; Lighting
Subjects:Sciences > Physics > Optics
Medical sciences > Optics > Geometrical and instumental optics
Humanities > Fine Arts > Conservation and restoration
ID Code:45994
Deposited On:22 Jan 2018 13:40
Last Modified:22 Jan 2018 13:40

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