Connecting palettes — An integrated spectroscopic analysis and UMAP visualisation of Wu Guanzhong's paint palette and his painting

IF 3.5 2区 综合性期刊 0 ARCHAEOLOGY
King Wai Chiu , Dickson Tik San Sin , May Chui In Long
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引用次数: 0

Abstract

A paint palette of the 20th-century Chinese modern artist Wu Guanzhong (1919–2010) was studied with an integrated spectroscopic approach, macro-scale non-invasive techniques hyperspectral imaging (HSI) and macro X-ray fluorescence (MA-XRF), complemented with Raman spectroscopy. The palette is revealed to be comprised of synthetic inorganic and organic pigments, typical of the 20th century modern palette that is dominated by azo and phthalocyanine pigments. HSI datasets of the paint palette and those of Wu's oil painting ‘Xidi Village’ (2001) were then processed within one unsupervised Uniform Manifold Approximation and Projection (UMAP) model, in an attempt to identify connections between the artefact and the artwork, so that known pigment results of the palette may provide preliminary pigment assignment for the painting. This study describes the steps taken to establish this automated assisted pigment analysis workflow, which involves processing multiple HSI datasets within one UMAP model, density clustering, non-negative least square (NNLS) fitting to extract endmembers (EM) spectra and to generate distribution maps. The approach to perform micro-sampling pigment analysis on the artist's palette (or artist's materials) is considered less invasive to the integrity than that from artworks, the results of which have demonstrated to serve as a critical resource to support further pigment analysis studies of the artist's paintings via non-invasive analytical techniques.

连接调色板--吴冠中调色板及其绘画的综合光谱分析和 UMAP 可视化研究
研究人员采用综合光谱方法、宏观尺度非侵入性技术高光谱成像(HSI)和宏观 X 射线荧光(MA-XRF)以及拉曼光谱,对 20 世纪中国现代艺术家吴冠中(1919-2010 年)的调色板进行了研究。结果显示,调色板由合成无机和有机颜料组成,是 20 世纪现代调色板的典型代表,以偶氮和酞菁颜料为主。调色板和吴氏油画作品《西递村》(2001 年)的 HSI 数据集随后在一个无监督的 Uniform Manifold Approximation and Projection (UMAP) 模型中进行了处理,试图找出文物和艺术品之间的联系,从而使调色板的已知颜料结果能够为油画提供初步的颜料分配。本研究介绍了建立这一自动辅助颜料分析工作流程所采取的步骤,其中包括在一个 UMAP 模型中处理多个 HSI 数据集、密度聚类、非负最小二乘法(NNLS)拟合以提取内含物(EM)光谱并生成分布图。在艺术家的调色板(或艺术家的材料)上进行微取样颜料分析的方法被认为比从艺术品上进行分析对完整性的影响更小,其结果已被证明是通过非侵入式分析技术对艺术家的绘画作品进行进一步颜料分析研究的重要支持资源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Cultural Heritage
Journal of Cultural Heritage 综合性期刊-材料科学:综合
CiteScore
6.80
自引率
9.70%
发文量
166
审稿时长
52 days
期刊介绍: The Journal of Cultural Heritage publishes original papers which comprise previously unpublished data and present innovative methods concerning all aspects of science and technology of cultural heritage as well as interpretation and theoretical issues related to preservation.
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