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首页> 外文会议>Nonimaging optics: efficient design for illumination and solar concentration XIV >Point to point multispectral light projection applied to cultural heritage
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Point to point multispectral light projection applied to cultural heritage

机译：点对点多光谱光投射应用于文化遗产

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摘要

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".
机译：基于LED技术的新型光源的使用应允许开发结合保护和展览要求的系统，并允许根据可持续性原则将这些艺术品用于下一代。这项工作的目的是为艺术品的每个特定点开发具有优化光谱分布的光源系统和光源。该优化过程意味着最大化色彩保真度再现，同时意味着最小化光化学损伤。在这些来源下感知到的颜色将类似于（同色异义的）修复小组提出的技术要求，而无需承担艺术品的保存和展示。根据暴露的艺术品的易碎性（即材料的光谱响应性），辐照度必须保持在临界水平以下。因此，有必要建立一个数学模型，以足够的精度模拟照明的视觉效果和辐射的光化学冲击。参考涂料的光谱反射率数学模型基于优点函数，该函数考虑了材料的损坏函数和颜色空间坐标，优化了LED光源的单个强度。此外，该算法使用权重来表示损害和颜色逼真度，以使模型适应特定的肌肉应用。在这项工作中，我们展示了将这种技术的样本应用于Sorolla（1863-1923）的照片，该照片是西班牙重要的画家标题“在沙滩上散步的女人”。

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  • 来源
  • 会议地点 San Diego(US)
  • 作者

    D. Vazquez; A. Alvarez; H. Canabal; A. Garcia; S. Mayorga; C.Muro; T. Galan;

  • 作者单位

    Optics Dept. of Universidad Complutense de Madrid, 118 Arcos del Jalon, Madrid,Spain;

    Optics Dept. of Universidad Complutense de Madrid, 118 Arcos del Jalon, Madrid,Spain;

    Optics Dept. of Universidad Complutense de Madrid, 118 Arcos del Jalon, Madrid,Spain;

    Dept. of Applied Physic, Universidad Politecnica de Madrid, Madrid, Spain;

    Optics Dept. of Universidad Complutense de Madrid, 118 Arcos del Jalon, Madrid,Spain;

    Restoration Dept. of CMuseo Nacional Centro de arte Reina Sofia;

    Dept. of RD LLEDO Iluminacion, Mostoles, Spain;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    LED; Lighting; cultural heritage; Color;

    机译：发光二极管;灯光;文化遗产;颜色;

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