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High-Dynamic-Range Spectral Reflectance for the Segmentation of Paint Pigment: Application to Dalí’s Oil Painting Dos Figuras (1926)

Restorers and curators in museums sometimes find it difficult to accurately segment areas of paintings that have been contaminated with other pigments or areas that need to be restored, and work on the painting needs to be carried out with minimum possible damage. It is therefore necessary to develo...

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Autores principales: Fernandez-Balbuena, Antonio Alvarez, Gómez-Manzanares, Angela, Martínez Antón, Juan Carlos, Gómez-Tejedor, Jorge García, Mayorga-Pinilla, Santiago, Durán Roque, Humberto, Vázquez Moliní, Daniel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
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Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10181576/
https://www.ncbi.nlm.nih.gov/pubmed/37177520
http://dx.doi.org/10.3390/s23094316
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author Fernandez-Balbuena, Antonio Alvarez
Gómez-Manzanares, Angela
Martínez Antón, Juan Carlos
Gómez-Tejedor, Jorge García
Mayorga-Pinilla, Santiago
Durán Roque, Humberto
Vázquez Moliní, Daniel
author_facet Fernandez-Balbuena, Antonio Alvarez
Gómez-Manzanares, Angela
Martínez Antón, Juan Carlos
Gómez-Tejedor, Jorge García
Mayorga-Pinilla, Santiago
Durán Roque, Humberto
Vázquez Moliní, Daniel
author_sort Fernandez-Balbuena, Antonio Alvarez
collection PubMed
description Restorers and curators in museums sometimes find it difficult to accurately segment areas of paintings that have been contaminated with other pigments or areas that need to be restored, and work on the painting needs to be carried out with minimum possible damage. It is therefore necessary to develop measurement systems and methods that facilitate this task in the least invasive way possible. The aim of this study was to obtain high-dynamic-range (HDR) spectral reflectance and spatial resolution for Dalí’s painting entitled Two Figures (1926) in order to segment a small area of black and white pigment that was affected by the contact transfer of reddish pigment from another painting. Using Hypermatrixcam to measure the HDR spectral reflectance developed by this research team, an HDR multispectral cube of 12 images was obtained for the band 470–690 nm in steps of 20 nm. With the values obtained for the spectral reflectance of the HDR cube, the colour of the area of paint affected by the transfer was studied by calculating the a*b* components with the CIELab system. These a*b* values were then used to define two methods of segmenting the exact areas in which there was a transfer of reddish pigment. The area studied in the painting was originally black, and the contamination with reddish pigment occupied 13.87% to 32% of the total area depending on the selected method. These different solutions can be explained because the lower limit is segmentation based on pure pigment and the upper limit considers red as an exclusion of non-black pigment. Over- and under-segmentation is a common problem described in the literature related to pigment selection. In this application case, as red pigment is not original and should be removed, curators will choose the method that selects the highest red area.
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spelling pubmed-101815762023-05-13 High-Dynamic-Range Spectral Reflectance for the Segmentation of Paint Pigment: Application to Dalí’s Oil Painting Dos Figuras (1926) Fernandez-Balbuena, Antonio Alvarez Gómez-Manzanares, Angela Martínez Antón, Juan Carlos Gómez-Tejedor, Jorge García Mayorga-Pinilla, Santiago Durán Roque, Humberto Vázquez Moliní, Daniel Sensors (Basel) Article Restorers and curators in museums sometimes find it difficult to accurately segment areas of paintings that have been contaminated with other pigments or areas that need to be restored, and work on the painting needs to be carried out with minimum possible damage. It is therefore necessary to develop measurement systems and methods that facilitate this task in the least invasive way possible. The aim of this study was to obtain high-dynamic-range (HDR) spectral reflectance and spatial resolution for Dalí’s painting entitled Two Figures (1926) in order to segment a small area of black and white pigment that was affected by the contact transfer of reddish pigment from another painting. Using Hypermatrixcam to measure the HDR spectral reflectance developed by this research team, an HDR multispectral cube of 12 images was obtained for the band 470–690 nm in steps of 20 nm. With the values obtained for the spectral reflectance of the HDR cube, the colour of the area of paint affected by the transfer was studied by calculating the a*b* components with the CIELab system. These a*b* values were then used to define two methods of segmenting the exact areas in which there was a transfer of reddish pigment. The area studied in the painting was originally black, and the contamination with reddish pigment occupied 13.87% to 32% of the total area depending on the selected method. These different solutions can be explained because the lower limit is segmentation based on pure pigment and the upper limit considers red as an exclusion of non-black pigment. Over- and under-segmentation is a common problem described in the literature related to pigment selection. In this application case, as red pigment is not original and should be removed, curators will choose the method that selects the highest red area. MDPI 2023-04-27 /pmc/articles/PMC10181576/ /pubmed/37177520 http://dx.doi.org/10.3390/s23094316 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Fernandez-Balbuena, Antonio Alvarez
Gómez-Manzanares, Angela
Martínez Antón, Juan Carlos
Gómez-Tejedor, Jorge García
Mayorga-Pinilla, Santiago
Durán Roque, Humberto
Vázquez Moliní, Daniel
High-Dynamic-Range Spectral Reflectance for the Segmentation of Paint Pigment: Application to Dalí’s Oil Painting Dos Figuras (1926)
title High-Dynamic-Range Spectral Reflectance for the Segmentation of Paint Pigment: Application to Dalí’s Oil Painting Dos Figuras (1926)
title_full High-Dynamic-Range Spectral Reflectance for the Segmentation of Paint Pigment: Application to Dalí’s Oil Painting Dos Figuras (1926)
title_fullStr High-Dynamic-Range Spectral Reflectance for the Segmentation of Paint Pigment: Application to Dalí’s Oil Painting Dos Figuras (1926)
title_full_unstemmed High-Dynamic-Range Spectral Reflectance for the Segmentation of Paint Pigment: Application to Dalí’s Oil Painting Dos Figuras (1926)
title_short High-Dynamic-Range Spectral Reflectance for the Segmentation of Paint Pigment: Application to Dalí’s Oil Painting Dos Figuras (1926)
title_sort high-dynamic-range spectral reflectance for the segmentation of paint pigment: application to dalí’s oil painting dos figuras (1926)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10181576/
https://www.ncbi.nlm.nih.gov/pubmed/37177520
http://dx.doi.org/10.3390/s23094316
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