Repository logo
 
Publication

Reviving the colors of paintings by removing the protective coating: a physical and virtual intervention

2025-07Journal article Open access
Simple item page
dc.contributor.authorMonteiro, José A. R.
dc.contributor.authorCardeira, Liliana
dc.contributor.authorBAILÃO, ANA
dc.contributor.authorNascimento, Sérgio M.C.
dc.contributor.authorLinhares, João
dc.date.accessioned2025-07-14T11:14:33Z
dc.date.available2025-07-14T11:14:33Z
dc.date.issued2025-07
dc.description.abstractWhen an existing coating over a painting is detrimental to its reading and full appreciation, it needs to be removed. Coating removal to reveal the underlying painting, with minimal physical intervention, may provide additional information regarding the painting and guidance for its restoration or intervention. A Neural Network (NN) was devised to simulate the removal of a painting’s coating, using as training data a small area of the painting where the coating had been physically removed. Simulations of coating removal using the NN and two additional methodologies were compared to actual physical removal. Hyperspectral images of the paintings with and without coating were acquired, and chromatic variations were computed by estimating differences in just-noticeable different colors (JND) values and in the color gamut, using CIECAM16-UCS. Comparisons were made between paintings with and without coating, and between paintings without coating and their simulations. Results showed that removing the coating led to an increase in JND values (1.8 times on average) and in the color gamut, but the magnitude was dependent on the initial condition of the coating. When simulating coating removal, the NN produced the best chromatic simulation, with an average JND of approximately 2.6 ± 0.5 (1.1 ± 0.2 excluding lightness), while other methodologies produced differences of approximately 8.6 ± 5.7 (3.7 ± 3.0 excluding lightness). Results achieved with the NN highlight its capability for simulating coating removal with minimal physical intervention to the painting, a valuable tool when complete coating removal without outcome prediction would be undesirable.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationIn: José A.R. Monteiro, Liliana Cardeira, Ana Bailão, Sérgio Miguel Cardoso Nascimento, João M.M. Linhares, Reviving the colors of paintings by removing the protective coating: a physical and virtual intervention, Journal of Cultural Heritage, Volume 74, 2025, Pages 322-331, ISSN 1296-2074, https://doi.org/10.1016/j.culher.2025.06.015pt_PT
dc.identifier.doihttps://doi.org/10.1016/j.culher.2025.06.015pt_PT
dc.identifier.issn1296-2074
dc.identifier.urihttp://hdl.handle.net/10400.5/102152
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherJournal of Cultural Heritagept_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S1296207425001256pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectHyperspectral imagept_PT
dc.subjectConservation and restorationpt_PT
dc.subjectDigital restorationpt_PT
dc.subjectVarnish agingpt_PT
dc.subjectNeural networkspt_PT
dc.subjectKubelka-Munk theorypt_PT
dc.subjectImagem hiperespectralpt_PT
dc.subjectConservação e Restauropt_PT
dc.subjectRestauro digitalpt_PT
dc.subjectEnvelhecimento do vernizpt_PT
dc.subjectRedes neuraispt_PT
dc.subjectTeoria Kubelka-Munkpt_PT
dc.titleReviving the colors of paintings by removing the protective coating: a physical and virtual interventionpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage331pt_PT
oaire.citation.startPage322pt_PT
oaire.citation.titleJournal of Cultural Heritagept_PT
oaire.citation.volume74pt_PT
person.familyNameMonteiro
person.familyNameCardeira
person.familyNameDOS SANTOS BAILÃO
person.familyNameNascimento
person.givenNameJosé Alexandre
person.givenNameLiliana
person.givenNameANA MARIA
person.givenNameSérgio
person.identifier.ciencia-id0D16-FDD6-1A76
person.identifier.ciencia-id4F14-C58B-E838
person.identifier.ciencia-idBA1D-3C4C-51D8
person.identifier.orcid0000-0002-5780-956X
person.identifier.orcid0000-0001-7789-9980
person.identifier.orcid0000-0002-2652-0843
person.identifier.orcid0000-0002-2503-9003
person.identifier.scopus-author-id7003805778
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication31b2884b-5c20-462d-9813-d000a7eaae57
relation.isAuthorOfPublication305da729-c683-4079-ae31-81d1d3123a76
relation.isAuthorOfPublication2415fc85-5615-4e9d-90db-5ad7b8ccf2a3
relation.isAuthorOfPublicationad6cd653-dcf6-4fc9-8d29-a1dc514106cc
relation.isAuthorOfPublication.latestForDiscoveryad6cd653-dcf6-4fc9-8d29-a1dc514106cc

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Reviving-the-colors-of-paintings-by-removing-the-protect_2025_Journal-of-Cul.pdf
Size:
1.98 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.2 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

FBA-CIEBA - Artigos em Revistas Internacionais