Hyperspectral sensor: A handy tool to evaluate the efficacy of cleaning procedures

Vettori, Serena; Verrucchi, Margherita; Benedetto, Francesco Di; Gioventù, Eleonora; Benvenuti, Marco; Pecchioni, Elena; Costagliola, Pilario; Cagnini, Andrea; Porcinai, Simone; Rimondi, Valentina; Moretti, Sandro

doi:10.1016/j.culher.2021.02.012

Cited by 3 publications

(6 citation statements)

References 17 publications

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“…In this spectral range, overtones and/or combination lines of the carbonate, sulphate and OH/H 2 O groups of either calcite or gypsum can be easily discriminated [23][24][25]35]. In the fitting model, calcite and gypsum molar fraction contributions were evaluated by weighing simulated contributions of the reference compounds in a nonlinear least squares procedure [27,28]. Gypsum and calcite spectral component contributions were estimated by linear combination coefficients, k g and k c , respectively, leaving unconstrained their sum.…”

Section: Colorimetric and Spectroscopic Investigationsmentioning

confidence: 99%

“…Gypsum and calcite spectral component contributions were estimated by linear combination coefficients, k g and k c , respectively, leaving unconstrained their sum. Further details on this procedural strategy can be found in [27,28].…”

Section: Colorimetric and Spectroscopic Investigationsmentioning

confidence: 99%

“…The parameterisation yielded meaningful results for all samples. According to Vettori et al [28], a graphical representation of the gypsum over calcite molar fraction ratio could allow a fast understanding of the status of the considered samples and of the mineralogical changes undergone in the 2012-2021 time span. The gypsum/calcite ratios are shown in the Figure 8.…”

Section: Swir Spectrometrymentioning

confidence: 99%

“…The capability of SWIR hyperspectral technique to on-site monitor the most effective cleaning procedures for black crusts on marble surfaces [28].…”

mentioning

confidence: 99%

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Non-Invasive SWIR Monitoring of White Marble Surface of the Cathedral of Santa Maria del Fiore (Florence, Italy)

et al. 2023

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The monitoring of stone alteration represents a key factor in the knowledge and prediction of the status of conservation of building stones in the urban framework. A continuous monitoring requires a non-destructive analytical approach and, possibly, a simple, low-cost and effective tool to study the decay processes. Previous studies demonstrated the capability of the SWIR hyperspectral technique to gain information on the degree of sulfation of carbonate stone surfaces. In this study we aim at setting up a protocol to investigate on-site the sulfation degree of the white marble cladding surfaces of the worldwide-famous Santa Maria del Fiore Cathedral in Florence (Italy). The proposed protocol couples information by SWIR hyperspectral and colorimetric techniques. We have proved that, in selected areas investigated at a distance of nine years, the colour and the mineralogical changes (i.e., sulfation) are significantly greater than the relative uncertainties of the two methods. Moreover, the proposed protocol results rapid, repeatable and fully not invasive.

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Section: Colorimetric and Spectroscopic Investigationsmentioning

confidence: 99%

Section: Colorimetric and Spectroscopic Investigationsmentioning

confidence: 99%

Section: Swir Spectrometrymentioning

confidence: 99%

“…The capability of SWIR hyperspectral technique to on-site monitor the most effective cleaning procedures for black crusts on marble surfaces [28].…”

mentioning

confidence: 99%

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Non-Invasive SWIR Monitoring of White Marble Surface of the Cathedral of Santa Maria del Fiore (Florence, Italy)

et al. 2023

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“…또한 보존처리 전⋅후 세척 효과를 평가하는 방법으로 서 초분광 분석이 효율적인 수단임을 제안한 사례가 있다 (Fiorucci et al, 2014;Pozo-Antonio et al, 2015;Vettori et al, 2021). 하지만 이 연구들은 분광광도계를 활용하였거 나, 영상 분광기의 장점을 충분히 활용하지 못하고 분광 반사곡선을 비교하였다.…”

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Consideration on the Cleaning Effect of Black Contaminants using Visible-Near-Infrared (VNIR) Hyperspectral Images

Ahn¹,

Cho²,

Lee³

2022

J. Conserv. Sci

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VNIR hyperspectral images can be analyzed in situations involving color changes, such as before and after cleaning, without pre-treatment. In this study, to analyze the application of the VNIR hyperspectral system, we compared the black contaminants on the surface of the Jigwangguksa Pagoda upper stereobate at Beopcheonsa Temple, Wonju before and after cleaning with laser. After a preliminary experiment to evaluate the applicability of VNIR hyperspectral imaging, we took images of the four sides (north, south, east, and west). The 823 nm band image was used for comparing before and after cleaning. As per the result of the image differencing analysis about before and after cleaning, the spectral reflectance of the area where the cleaning was performed showed a tendency to increase. Additionally, it was found that not only the washed area but also the extent of change could be calculated through monochrome for quantitative comparison, and imaging analysis using the VNIR hyperspectral system was sufficiently effective for comparison before and after cleaning.

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Identification of Modern and Contemporary Pigments in the Arxiu Valencià Del Disseny Artefacts Using Non-Invasive Hyperspectral Imaging and On-Site Portable Spectroscopies

Solbes-García,

Ramacciotti,

Alba Pagán

et al. 2023

Preprint

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Hyperspectral sensor: A handy tool to evaluate the efficacy of cleaning procedures

Cited by 3 publications

References 17 publications

Non-Invasive SWIR Monitoring of White Marble Surface of the Cathedral of Santa Maria del Fiore (Florence, Italy)

Non-Invasive SWIR Monitoring of White Marble Surface of the Cathedral of Santa Maria del Fiore (Florence, Italy)

Consideration on the Cleaning Effect of Black Contaminants using Visible-Near-Infrared (VNIR) Hyperspectral Images

Identification of Modern and Contemporary Pigments in the Arxiu Valencià Del Disseny Artefacts Using Non-Invasive Hyperspectral Imaging and On-Site Portable Spectroscopies

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