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A smartphone-based innovative approach to discriminate red pigments in roman frescoes mock-ups

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A smartphone-based innovative approach to discriminate red pigments in roman frescoes mock-ups

dc.contributor.author	Sáez Hernández, Roberto
dc.contributor.author	Antela, Kevin U.
dc.contributor.author	Gallello, Gianni
dc.contributor.author	Cervera Sanz, Maria Luisa
dc.contributor.author	Mauri Aucejo, Adela
dc.date.accessioned	2023-06-16T11:14:51Z
dc.date.available	2023-06-17T04:45:06Z
dc.date.issued	2022	es_ES
dc.identifier.citation	Sáez-Hernández, R., Antela, K. U., Gallello, G., Cervera, M. L., & Mauri-Aucejo, A. R. (2022). A smartphone-based innovative approach to discriminate red pigments in roman frescoes mock-ups. Journal of Cultural Heritage, 58, 156-166.	es_ES
dc.identifier.uri	https://hdl.handle.net/10550/88333
dc.description.abstract	The characterization of red pigments in frescoes wall paintings has been of great interest for researchers to better understand raw material procurement dynamics, pigment receipts, stylistic evolution and to assess their conservation state. In this study a non-destructive colorimetric approach implementing a smartphone-based method was developed in order to be able to distinguish between three pigments made from minium, haematite and cinnabar minerals, and also mixed pigments, preparing frescoes mock-ups following the roman receipt described by Vitruvius. Portable FT-IR, Raman spectroscopy, portable XRF and visible reflectance spectra analyses were carried out as reference methods for smartphone colorimetry results validation. Employing a reference colour sheet to control changing lighting conditions, different chemometric approaches have been developed and tested, cross-referencing standard analytical results with the data obtained by smartphone. Overall, using only colour parameters from the smartphone, a Linear Discriminant Analysis and a Support Vector Classifier were tested to efficiently classify each sample based on the red pigment used, with low prediction errors. This work shows the potential of smartphones as cheap, fast and user-friendly analytical devices for the screening of frescoes, and as a prior selective step before carrying out further more expensive and specialized analyses.	es_ES
dc.language.iso	en	es_ES
dc.publisher	Elsevier	es_ES
dc.subject	roman fresco	es_ES
dc.subject	smartphone	es_ES
dc.subject	spectroscopy	es_ES
dc.subject	mock-up	es_ES
dc.subject	pigment	es_ES
dc.subject	colorimetry	es_ES
dc.title	A smartphone-based innovative approach to discriminate red pigments in roman frescoes mock-ups	es_ES
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::CIENCIAS TECNOLÓGICAS	es_ES
dc.identifier.doi	10.1016/j.culher.2022.10.003	es_ES
dc.accrualmethod	CI	es_ES
dc.embargo.terms	0 days	es_ES
dc.type.hasVersion	VoR	es_ES
dc.rights.accessRights	open access	es_ES