Recent Advances in the Application of the Field-Portable Hyperspectral Radiometer to Characterize Materials Concerning Cultural Heritage
WANG Cong1, 2, Mara Camaiti3, LIU Dai-yun4, TIE Fu-de2, 5, CAO Yi-jian5, 6*
1. China-Central Asia “The Belt and Road” Joint Laboratory on Human and Environment Research (Northwest University), Xi'an 710127, China
2. Key Laboratory of Cultural Heritage Research and Conservation (Northwest University), Ministry of Education, Xi'an 710127, China
3. CNR-Institute of Geosciences and Earth Resources, Florence 50121, Italy
4. Shaanxi Provincial Institute of Archaeology, Xi'an 710043, China
5. Key Laboratory of Archaeological Exploration and Cultural Heritage Conservation Technology (Northwestern Polytechnical University), Ministry of Education, Xi'an 710072, China
6. Institute of Culture and Heritage, Northwestern Polytechnical University, Xi'an 710072, China
Abstract：Cultural heritage is the precious, non-renewable cultural resource of all humanity. Due to the preciousness of cultural heritage and also based on the basic principle of minimal intervention in heritage conservation, non-destructive analysis has always been the most important technology for materials characterization in the field of heritage science (e.g. studies on the original manufacturing process, deterioration mechanism and conservation/restoration technology). Therefore, developing and applying novel non-destructive analysis technology is an indispensable research direction in heritage science. Recently, the field-portable hyperspectral radiometer, originating from remote sensing as a light energy radiometer, has shown great application potential in analyzing heritage objects and has already been successfully applied in restoring ancient stone architecture, paintings, and others. As a non-invasive spectral technique that does not require sampling, the field-portable hyperspectral radiometer can acquire a full-band, high-resolution reflectance spectrum covering visible-near-infrared and shortwave infrared bands (350~2 500 nm) in a very short time. At the same time, it is highly portable. It can be used in the field or archaeological sites regardless of the environmental conditions. Moreover, remote sensing technology can be used to realize remote transmission and analysis of spectral data during spectral acquisition. All these characteristics are unique advantages for their application in characterizing artworks. This paper introduces the equipment type and characteristics of the field-portable hyperspectral radiometer commonly used first. The application status in the qualitative and quantitative analysis of organic/inorganic artworks, the analysis of conservation materials, and the in situ and real-time monitoring of the conservation/restoration process in the past ten years are reviewed afterwards. Then, two key problems that affect the accuracy and efficiency of using this technique are discussed in depth, i.e. the specification of spectral pre-treatment and the establishment of standard spectra databases. Finally, the development trend of this technique is forecasted. It is expected to have broad prospects in analysing fragile organic heritage objects, combining application of various analysis techniques and quantitative analysis.
Key words：Hyperspectral radiometer; Cultural heritage; Materials characterization; Non-destructive analysis
王 聪，Mara Camaiti，刘呆运，铁付德，曹颐戬. 基于便携式地物高光谱仪的文物材料分析研究进展[J]. 光谱学与光谱分析, 2024, 44(05): 1218-1226.
WANG Cong, Mara Camaiti, LIU Dai-yun, TIE Fu-de, CAO Yi-jian. Recent Advances in the Application of the Field-Portable Hyperspectral Radiometer to Characterize Materials Concerning Cultural Heritage. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(05): 1218-1226.
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