Non-invasive identification of traditional red lake pigments in fourteenth to sixteenth centuries paintings through the use of hyperspectral imaging technique

Vitorino, Tatiana; Casini, Andrea; Cucci, Costanza; Melo, Maria João; Picollo, Marcello; Stefani, Lorenzo De

doi:10.1007/s00339-015-9360-4

Cited by 45 publications

(31 citation statements)

References 27 publications

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“…13), it requires careful optomechanical design for integrated scanning devices. The hyperspectral imaging instrument at IFAC-CNR is a good example of state-of-the-art spectral imaging with illumination geometry equivalent to that of a spectrophotometer [34]. The system is based on a prism line-spectrograph, connected to a high sensitivity CCD camera.…”

Section: Discussionmentioning

confidence: 99%

Assessment of multispectral and hyperspectral imaging systems for digitisation of a Russian icon

et al. 2017

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In a study of multispectral and hyperspectral reflectance imaging, a Round Robin Test assessed the performance of different systems for the spectral digitisation of artworks. A Russian icon, mass-produced in Moscow in 1899, was digitised by ten institutions around Europe. The image quality was assessed by observers, and the reflectance spectra at selected points were reconstructed to characterise the icon's colourants and to obtain a quantitative estimate of accuracy. The differing spatial resolutions of the systems affected their ability to resolve fine details in the printed pattern. There was a surprisingly wide variation in the quality of imagery, caused by unwanted reflections from both glossy painted and metallic gold areas of the icon's surface. Specular reflection also degraded the accuracy of the reconstructed reflectance spectrum in some places, indicating the importance of control over the illumination geometry. Some devices that gave excellent results for matte colour charts proved to have poor performance for this demanding test object. There is a need for adoption of standards for digitising cultural heritage objects to achieve greater consistency of system performance and image quality.

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Section: Discussionmentioning

confidence: 99%

Assessment of multispectral and hyperspectral imaging systems for digitisation of a Russian icon

et al. 2017

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“…463 nm, absorptions at approx. 510 nm and inflection points between 569 and 600 nm, at lower wavelengths with respect to anthraquinones; only spectrum 8 left-c did not exhibit the first additional reflectance maximum [76].…”

Section: Red and Pink Huesmentioning

confidence: 99%

“…The absorption behavior in the visible region of these anthraquinone-based dyes is principally due to n → π* transitions of carbonyl groups in the molecules (Table 4) [75][76][77][78].…”

Section: Red and Pink Huesmentioning

confidence: 99%

Non-invasive study of natural dyes on historical textiles from the collection of Michelangelo Guggenheim

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Tripodi

Martignon

et al. 2018

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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a b s t r a c t a r t i c l e i n f oA selection of historical textile fragments from the Venetian art dealer Moisè Michelangelo Guggenheim collection, ranging from XV to XVIII century, has been investigated by means of non-invasive techniques in order to reveal the coloring materials. Imaging was preliminarily used to visually investigate the selected artwork fragments in order to investigate their structure and conservation conditions; Fiber Optics Reflectance Spectroscopy (FORS) allowed recognizing the main natural dyestuffs, such as indigotin and anthraquinones-based compounds, except the yellow ones, difficultly identifiable when using this non-invasive technique. Collected spectroscopic data have been also elaborated by using a clustering algorithm that permitted to group collected spectra on the basis of similar properties and evidencing their inflection point wavelength as the most influencing feature.

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“…Unusual or unexpected colourants can create a need for the use of multi-technique analyses [14]. On the other hand, HSI has been shown to successfully differentiate between colourants that other techniques find difficult [56]. Red lake pigments (madder, for example) are very light sensitive and so their characterisation and any data on their degradation can be of upmost help [56].…”

Section: Hyperspectral Imagingmentioning

confidence: 99%

“…On the other hand, HSI has been shown to successfully differentiate between colourants that other techniques find difficult [56]. Red lake pigments (madder, for example) are very light sensitive and so their characterisation and any data on their degradation can be of upmost help [56]. HSI was used to discriminate between madder, cochineal, and brazilwood however the addition of binding media etc.…”

Section: Hyperspectral Imagingmentioning

confidence: 99%

Comparing the effectiveness of hyperspectral imaging and Raman spectroscopy: a case study on Armenian manuscripts

et al. 2018

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There is great practical and scholarly interest in the identification of pigments in works of art. This paper compares the effectiveness of the widely used Raman Spectroscopy (RS), with hyperspectral imaging (HSI), a reflectance imaging technique, to evaluate the reliability of HSI for the identification of pigments in historic works of art and to ascertain if there are any benefits from using HSI or a combination of both. We undertook a case study based on six Armenian illuminated manuscripts (eleventh-eighteenth centuries CE) in the Bodleian Library, University of Oxford. RS, and HSI (380-1000 nm) were both used to analyse the same 10 folios, with the data then used to test the accuracy and efficiency of HSI against the known results from RS using reflectance spectra reference databases compiled by us for the project. HSI over the wavelength range 380-1000 nm agreed with RS at best 93% of the time, and performance was enhanced using the SFF algorithm and by using a database with many similarities to the articles under analysis. HSI is significantly quicker at scanning large areas, and can be used alongside RS to identify and map large areas of pigment more efficiently than RS alone. HSI therefore has potential for improving the speed of pigment identification across manuscript folios and artwork but must be used in conjunction with a technique such as RS.

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Non-invasive identification of traditional red lake pigments in fourteenth to sixteenth centuries paintings through the use of hyperspectral imaging technique

Cited by 45 publications

References 27 publications

Assessment of multispectral and hyperspectral imaging systems for digitisation of a Russian icon

Assessment of multispectral and hyperspectral imaging systems for digitisation of a Russian icon

Non-invasive study of natural dyes on historical textiles from the collection of Michelangelo Guggenheim

Comparing the effectiveness of hyperspectral imaging and Raman spectroscopy: a case study on Armenian manuscripts

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