Innovative uses of 3D digital technologies to assist the restoration of a fragmented terracotta statue

Arbace, Lucia; Sonnino, Elisabetta; Callieri, Marco; Dellepiane, Matteo; Fabbri, M.; Idelson, Antonio Iaccarino; Scopigno, Roberto

doi:10.1016/j.culher.2012.06.008

Cited by 127 publications

(60 citation statements)

References 7 publications

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“…The paper is organized as shown in Figure 2. restoration [15], and even archaeological survey [16]. However, little effort has been made in using 3D laser scanning technology for detecting changes in gold foil.…”

Section: The Proposed Methodsmentioning

confidence: 99%

A New Method of Gold Foil Damage Detection in Stone Carving Relics Based on Multi-Temporal 3D LiDAR Point Clouds

Hou¹,

Li²,

Jiang³

et al. 2016

IJGI

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Abstract:The timely detection of gold foil damage in gold-overlaid stone carvings and the associated maintenance of these relics pose several challenges to both the research and heritage protection communities internationally. This paper presents a new method for detecting gold foil damage by making use of multi-temporal 3D LiDAR point clouds. By analyzing the errors involved in the detection process, a formula is developed for calculation of the damage detection threshold. An improved division method for the linear octree that only allocates memory to the non-blank nodes, is proposed, which improves storage and retrieval efficiency for the point clouds. Meanwhile, the damage-occurrence regions are determined according to Hausdorff distances. Using a triangular mesh, damaged regions can be identified and measured in order to determine the relic's total damaged area. Results demonstrate that this method can effectively detect gold foil damage in stone carvings. The identified surface area of damaged regions can provide the information needed for subsequent restoration and protection of relics of this type.

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Section: The Proposed Methodsmentioning

confidence: 99%

A New Method of Gold Foil Damage Detection in Stone Carving Relics Based on Multi-Temporal 3D LiDAR Point Clouds

Hou¹,

Li²,

Jiang³

et al. 2016

IJGI

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“…This paper presents a workflow methodology for mould classification that uses an innovative technique, composed of acquisition through 3D scanning and virtual reconstruction [11]. Scanning and virtual reconstruction are successfully used in other contexts [12,13], but here they show distinctive features because the surface relief is carried out in negative (Section 4.1.1).…”

Section: Classification Methodologymentioning

confidence: 99%

Methods and tools for the classification and cataloging of antique moulds from the collection of the Richard-Ginori factory

Gherardelli

Adembri²,

Balleri

et al. 2014

Journal of Cultural Heritage

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“…Este método ha sido utilizado en otros materiales, en Barreau et al (2014) se crea el modelo 3D de una serie de fragmentos de cerámica para generar un modelo completo de la pieza que se imprime en 3D y sirve como soporte a los fragmentos conservados, similar al realizado (López & Sandoval, 2009) explicado anteriormente pero sin el proceso de modelado y moldeado manual. La aplicación de estas técnicas puede resultar tan completa como la realizada en la restauración de la Madonna de Pietranico (Arbace et al, 2013), una estatua de terracota dañada tras un terremoto que quedó muy fragmentada con fragmentos de diferentes tamaños y pérdidas importantes. A través de los modelos 3D de los fragmentos se ha hecho un ensamblaje virtual, se han modelado o generado los faltantes y se ha realizado una reintegración cromática virtual con el objetivo de facilitar y guiar la fase de restauración.…”

Section: Introductionunclassified

Creación de implantes 3D en procesos de conservación y restauración de vidrio arqueológico

Díaz-Marín

Aura-Castro

2017

Virtual archaeol. rev.

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Resumen:En este artículo se restaura un cuenco de vidrio del siglo XVI-XVII mediante la creación de su modelo tridimensional (3D) con el fin de operar con él y eliminar el riesgo que entraña la manipulación de objetos frágiles. La áreas faltantes, correspondientes a los fragmentos de vidrio no encontrados en la excavación, se han llevado a cabo mediante la construcción digital de implantes. Para elaborar los implantes se ha duplicado un volumen del modelo 3D del cuenco adaptándolo al espacio confinado en las áreas vacías. La impresión de los implantes se ha hecho con filamento acrilonitrilo butadieno estireno (ABS). Estos implantes, que sustituyen a las zonas perdidas, han devuelto la estabilidad a la pieza y han permitido recrear la morfología original. El resultado puede ser comparado al obtenido por métodos tradicionales, pero difiere en que requiere una mínima manipulación del objeto, contribuyendo así, a la preservación y salvaguarda del objeto restaurado. Este método no invasivo se ofrece como un tratamiento alternativo, donde el objeto arqueológico es sustituido por su modelo virtual en todas las fases del proceso posteriores a la captura de datos 3D. No se han encontrado diferencias significativas en cuanto a los resultados obtenidos de impresión 3D con los dos tipos de filamentos ensayados (blanco y translúcido). Palabras clave: vidrio arqueológico, reconstrucción 3D, modelado 3D, impresión 3D, restauración Abstract:This article describes the restoration of a glass bowl from the 16 th -17 th century by creating its three-dimensional (3D) model. The final purpose is to work with this model in order to avoid damaging situations that are associated with the manipulation of fragile objects. The gap areas, those corresponding to the missing fragments not found in the excavation, were carried out by constructing digital implants. A restricted area of the 3D model has been duplicated in order to accommodate it to confined intervals of the gap. The final implants were printed with acrylonitrile butadiene styrene (ABS) filament. These implants replace the lost areas and give stability back to the item by recovering the original morphology. The result can be compared with the outcome obtained by a traditional process, but differs due to the fact that requires minimum manipulation of the item, so it can contribute to preserve and safeguard the restored object. This is a non-invasive method which is offered as an alternative treatment, where the archaeological object is replaced by its virtual model in the steps of the process after 3D data acquisition. Significant differences have not been found in the 3D printing results obtained with the two types of filaments tested (white and clear).Key words: archaeological glass, 3D reconstruction, 3D modelling, 3D printing, restoration IntroducciónUna gran parte del vidrio arqueológico exhumado presenta un deterioro característico con indicadores claros de las condiciones de elevada humedad con la que ha interactuado durante años. Su extracción conlleva una rápida deshidrat...

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Innovative uses of 3D digital technologies to assist the restoration of a fragmented terracotta statue

Cited by 127 publications

References 7 publications

A New Method of Gold Foil Damage Detection in Stone Carving Relics Based on Multi-Temporal 3D LiDAR Point Clouds

A New Method of Gold Foil Damage Detection in Stone Carving Relics Based on Multi-Temporal 3D LiDAR Point Clouds

Methods and tools for the classification and cataloging of antique moulds from the collection of the Richard-Ginori factory

Creación de implantes 3D en procesos de conservación y restauración de vidrio arqueológico

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