Format du dépôt |
Fichier |
Type de dépôt |
Article dans une revue |
Titre |
en
From RGB camera to hyperspectral imaging: a breakthrough in Neolithic rock painting analysis
|
Résumé |
en
Rock paintings undergo physical, chemical, biological and/or anthropic alterations that alter their visibility. Cameras and image enhancement tools (DStretch ® plug-in, for example) are commonly used to help identify and record images that have become invisible to the naked eye. HyperSpectral Imaging (HSI) which is strongly developing in many research and application fields, is tested in this study to analyze Neolithic rock paintings. We particularly address the question of what kind of additional information can Visible Near InfraRed HSI instruments, coupled to mathematical transformations to reduce the dimensionality of the data, bring for rock paintings, compared to standard RGB cameras. From the analysis of a selection of panels painted on yellow-reddish altered sandstone walls and measured in Saharan shaded shelters, we show that HSI can reveal new figures by capitalizing both on its ability to extract the different pigment types with a greater contrast, and on the new discriminating information contained in the very near infrared part of the spectrum. Despite their much smaller image format, HSI can provide up to 5–7 contrasted images of the spatial distribution of the different types of pigments in the figures. It thus appears to be a promising non-invasive and efficient methodology to both reveal disappeared paintings and to study image juxtapositions and painted layer superimpositions.
|
Auteur(s)
|
Bernard Schmitt
1
, Zahira Souidi
2
, Frédérique Duquesnoy
3
, Frédéric-Victor Donzé
4
1
IPAG -
Institut de Planétologie et d'Astrophysique de Grenoble
( 1002500 )
- 414, Rue de la Piscine BP 53 38041 Grenoble Cedex 9
- France
-
Centre National d'Études Spatiales [Toulouse] ( 307314 )
;
-
Centre National de la Recherche Scientifique UMR5274 ( 441569 )
;
-
Observatoire des Sciences de l'Univers de Grenoble ( 1002499 )
;
-
Institut national des sciences de l'Univers UAR832 / UMS832 ( 300045 )
;
-
Université Savoie Mont Blanc ( 432896 )
;
-
Centre National de la Recherche Scientifique UAR832 / UMS832 ( 441569 )
;
-
Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement UMS1484 ( 577435 )
;
-
Université Grenoble Alpes ( 1042703 )
;
-
Météo-France ( 1079823 )
2
Université de Ain Témouchent
( 1150865 )
- Algérie
3
EDYTEM -
Environnements, Dynamiques et Territoires de Montagne
( 20150 )
- Université de Savoie, Campus scientifique, 73376 Le Bourget du Lac cedex
- France
-
Université Savoie Mont Blanc ( 432896 )
;
-
Centre National de la Recherche Scientifique UMR5204 / FRE2641 ( 441569 )
4
ISTerre -
Institut des Sciences de la Terre
( 1043225 )
- ISTerre, OSUG-C (Maison des Géosciences), 1381, rue de la Piscine, 38610 GIERES
ISTerre, Université Savoie Mont Blanc, Campus Scientifique, 73376 Le Bourget-du-Lac Cedex
- France
-
Institut de Recherche pour le Développement UMR219 ( 67872 )
;
-
Institut national des sciences de l'Univers ( 300045 )
;
-
Université Savoie Mont Blanc ( 432896 )
;
-
Centre National de la Recherche Scientifique UMR5275 ( 441569 )
;
-
Université Gustave Eiffel ( 580722 )
;
-
Université Grenoble Alpes ( 1042703 )
|
Comité de lecture |
Oui
|
Vulgarisation |
Non
|
Audience |
Internationale
|
Nom de la revue |
|
Langue du document |
Anglais
|
Volume |
11
|
Numéro |
1
|
Page/Identifiant |
91
|
Date de publication |
2023-05-08
|
Référence interne |
-
Edytem
-
2020-2026 Edytem Equipe Matières
-
2020-2026 Edytem Equipe Sociétés
|
Domaine(s) |
-
Sciences de l'Homme et Société
-
Physique [physics]
|
Mots-clés |
en
Rock paintings, Archeology, Neolithic, DStretch, HyperSpectral Imaging, Sahara, Rock paintings Archeology Neolithic DStretch® HyperSpectral Imaging, DStretch®
|
DOI |
10.1186/s40494-023-00940-5 |