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首页> 外文会议>Optics for arts, architecture, and archaeology IV >Defects detection and non-destructive testing (NDT) techniques in paintings: an unified approach through measurements of deformation
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Defects detection and non-destructive testing (NDT) techniques in paintings: an unified approach through measurements of deformation

机译：绘画中的缺陷检测和无损检测（NDT）技术：通过测量变形的统一方法

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摘要

The present study is focused on two topics. The first one is a mathematical model, useful to understand the deformation of paintings, which uses straining devices, adjustable and micrometrically controlled via a pin supported in a hollow cylinder. Strains were analyzed by holographic interferometry (HI) technique using an appropriate frame. The second one concerns the need to improve the conservator's knowledge about the defect's detection and defect's propagation in acrylic painting characterized of underdrawings and pentimenti. To fulfill this task, a sample was manufactured to clarify the several uncertainties inherent the influence of external factors on their conservation. Subsurface anomalies were also retrieved by near-infrared reflectography (NIRR) and transmittography (NIRT) techniques, using LED lamps and several narrow-band filters mounted on a CMOS camera, working at different wavelengths each other and in combination with UV imaging. In addition, a sponge glued on the rear side of the canvas was impregnated with a precise amount of water by means of a syringe to verify the "stretcher effect" by the digital speckle photography (DSP) technique (using MatPIV). The same effect also affects the sharp transition of the canvas at the stretcher's edge. In this case, a possible mechanism is a direct mechanical contact between stretcher and canvas that was investigated by HI technique. Finally, advanced algorithms applied to the square heating thermography (SHT) data were very useful to detect three Mylar~® inserts simulating different type of defects. These fabricated defects were also identified by optical techniques, while the visual inspection was the only one capable of detecting a biological damage.
机译：本研究集中在两个主题上。第一个是有助于理解绘画变形的数学模型，该模型使用应变装置，该应变装置可通过支撑在空心圆柱体中的销进行调节和测微。使用合适的框架通过全息干涉术（HI）技术分析菌株。第二个问题涉及需要提高保护者对以底纹和下色为特征的丙烯酸涂料中缺陷的检测和缺陷传播的了解。为了完成此任务，制造了一个样品以阐明外部因素对其保存的影响所固有的一些不确定性。还使用LED灯和安装在CMOS相机上的几个窄带滤光片，通过近红外反射成像（NIRR）和透射成像（NIRT）技术检索了地下异常，它们在彼此不同的波长下工作，并且与UV成像相结合。另外，通过注射器将胶粘在画布背面的海绵浸入精确量的水，以通过数字散斑摄影（DSP）技术（使用MatPIV）验证“拉伸效果”。同样的效果也会影响画布在担架边缘的急剧过渡。在这种情况下，可能的机制是担架与画布之间的直接机械接触，这是通过HI技术进行了研究。最后，应用于方热热成像（SHT）数据的先进算法对于检测三个模拟不同类型缺陷的Mylar〜®刀片非常有用。这些制造的缺陷也可以通过光学技术进行识别，而目视检查是唯一能够检测生物损伤的缺陷。

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  • 来源
    《Optics for arts, architecture, and archaeology IV》|2013年|87900G.1-87900G.15|共15页
  • 会议地点 Munich(DE)
  • 作者

    S. Sfarra; C. Ibarra-Castanedo; D. Ambrosini; D. Paoletti; A. Bendada; X. Maldague;

  • 作者单位

    Las.E.R. Laboratory, University of L'Aquila, Department of Industrial and Information Engineering and Economics (DIIIE), Piazzale E. Pontieri 1, Loc. Monteluco di Roio, Roio Poggio, L'Aquila (AQ), Italy I-67100;

    Computer Vision and Systems Laboratory, Laval University, Department of Electrical and Computer Engineering, 1065 av. de la Medecine, Quebec City, Quebec (QC), Canada G1V 0A6;

    Las.E.R. Laboratory, University of L'Aquila, Department of Industrial and Information Engineering and Economics (DIIIE), Piazzale E. Pontieri 1, Loc. Monteluco di Roio, Roio Poggio, L'Aquila (AQ), Italy I-67100;

    Las.E.R. Laboratory, University of L'Aquila, Department of Industrial and Information Engineering and Economics (DIIIE), Piazzale E. Pontieri 1, Loc. Monteluco di Roio, Roio Poggio, L'Aquila (AQ), Italy I-67100;

    Computer Vision and Systems Laboratory, Laval University, Department of Electrical and Computer Engineering, 1065 av. de la Medecine, Quebec City, Quebec (QC), Canada G1V 0A6;

    Computer Vision and Systems Laboratory, Laval University, Department of Electrical and Computer Engineering, 1065 av. de la Medecine, Quebec City, Quebec (QC), Canada G1V 0A6;

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

    square heating thermography; holographic interferometry; digital speckle photography; paintings; defects; deformations;

    机译：方形加热热成像；全息干涉术数码散斑摄影；绘画缺陷变形;

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