Optical coherence tomography and spectral imaging of a wall painting
Optical coherence tomography and spectral imaging of a wall painting
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壁画的光学相干断层扫描和光谱成像
DOI：
10.1117/2.1201107.003778
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Lange R
中科院分区：
文献类型：
--
作者：
Lange R
确定历史绘画中使用的颜料的成分有两个原因。第一个是出于保护的目的，即根据绘画成分确定应该使用哪种保护方法来最好地处理艺术品。第二个目的是艺术史。例如，有些颜料是在某些时期使用的，而另一些则更现代。对颜料的分析使艺术历史学家能够限制绘画创作的时间，这有助于确定艺术品的年代。此外，颜料可以归因于地理区域，并用于阐明历史颜料贸易。在确定油漆成分时，保护伦理规定，通过采取油漆样品进行的例行检查仅限于少数地方，例如损坏的区域或艺术品的边缘。然后使用光学显微镜检查样品以识别每层中的颜料。相比之下，非侵入性成像技术可以提供整个绘画的概述，因此更具代表性。在这里，我们讨论了用于多光谱扫描的便携式远程成像系统（PRISMS）和用于非侵入性成像的光学相干断层扫描（OCT）的组合，以识别英国（UK）伦敦塔壁画的油漆层结构。PRISMS是一种专门设计用于原位成像壁画的多光谱/高光谱成像系统：参见图1（a）。1，2该技术测量材料的光谱反射特性。此外，PRISMS还能在可见/近红外（NIR; 400- 900 nm）（见视频3）和短波IR（900- 1700 nm）的各种光谱波段中提供定性图像，从而可以同时获得数百万像素的光谱。带间比较也是可能的，这通常会揭示损坏的区域，过去的保护干预，
There are two reasons for determining the composition of paints used in historical paintings. The first is for conservation purposes, ie, to identify which conservation methods should be used to best treat an artwork based on its paint composition. The second purpose is art history. For example, some pigments were used in certain periods, while others are more modern. Analysis of the pigments allows art historians to constrain the time when the painting was created, which assists with dating the artwork. Furthermore, pigments can be attributed to geographical areas and are used to shed light on historical pigment trade. In determining the paint composition, conservation ethics dictate that routine examination by taking paint samples is restricted to only a few places, such as areas of damage or the edge of the artwork. The samples are then examined using optical microscopy to identify pigments in each layer. In contrast, noninvasive imaging techniques can give an overview of the whole painting and are, thus, more representative. Here, we discuss the combination of portable remote imaging system for multispectral scanning (PRISMS) and optical coherence tomography (OCT) for non-invasive imaging to identify the paint layer structure of the wall painting at the Tower of London, United Kingdom (UK).PRISMS is a multispectral/hyperspectral imaging system specifically designed to image wall paintings in situ: see Figure 1 (a). 1, 2 The technique measures the spectral reflectance characteristic of a material. Additionally, PRISMS gives qualitative images in various spectral bands in the visible/near infrared (NIR; 400–900nm)—see video3—and the short-wave IR (900–1700nm) such that spectra for millions of pixels can be obtained simultaneously. Interband comparison is also possible, which usually reveals areas of damage, past conservation intervention,
利用光学相干断层扫描和多光谱成像进行颜料鉴定
DOI：
--
发表时间：
2008
期刊：
--
影响因子：
--
作者：
H Liang
通讯作者：
H Liang
PRISMS：用于远程现场检查壁画的便携式多光谱成像系统
影响因子：
0.8
作者：
Haida Liang;K. Keita;T. Vajzovic
通讯作者：
T. Vajzovic