Comparison of three-dimensional optical coherence tomography and high resolution photography for art conservation studies

Adler, Desmond C.; Stenger, Jens; Gorczyńska, Iwona; Lie, Henry; Hensick, Teri; Spronk, Ron; Wolohojian, Stephan; Khandekar, Narayan; Jiang, James; Barry, Scott; Cable, Alex; Huber, Robert; Fujimoto, James G.

doi:10.1364/oe.15.015972

Cited by 67 publications

(41 citation statements)

References 23 publications

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“…It compares near infrared light that has scattered back from different depths in a sample to a reference signal in an interferometric approach which can provide micrometre resolution to a depth of approximately 1-2 mm in tissue. It is becoming increasingly common in heritage applications [21], particularly when looking for underdrawings [22,23].…”

Section: Optical Coherence Tomographymentioning

confidence: 99%

An assessment of multimodal imaging of subsurface text in mummy cartonnage using surrogate papyrus phantoms

Gibson¹,

Piquette²,

Bergmann

et al. 2018

Herit Sci

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Ancient Egyptian mummies were often covered with an outer casing, panels and masks made from cartonnage: a lightweight material made from linen, plaster, and recycled papyrus held together with adhesive. Egyptologists, papyrologists, and historians aim to recover and read extant text on the papyrus contained within cartonnage layers, but some methods, such as dissolving mummy casings, are destructive. The use of an advanced range of different imaging modalities was investigated to test the feasibility of non-destructive approaches applied to multi-layered papyrus found in ancient Egyptian mummy cartonnage. Eight different techniques were compared by imaging four synthetic phantoms designed to provide robust, well-understood, yet relevant sample standards using modern papyrus and replica inks. The techniques include optical (multispectral imaging with reflection and transillumination, and optical coherence tomography), X-ray (X-ray fluorescence imaging, X-ray fluorescence spectroscopy, X-ray micro computed tomography and phase contrast X-ray) and terahertz-based approaches. Optical imaging techniques were able to detect inks on all four phantoms, but were unable to significantly penetrate papyrus. X-ray-based techniques were sensitive to iron-based inks with excellent penetration but were not able to detect carbon-based inks. However, using terahertz imaging, it was possible to detect carbon-based inks with good penetration but with less sensitivity to ironbased inks. The phantoms allowed reliable and repeatable tests to be made at multiple sites on three continents. The tests demonstrated that each imaging modality needs to be optimised for this particular application: it is, in general, not sufficient to repurpose an existing device without modification. Furthermore, it is likely that no single imaging technique will to be able to robustly detect and enable the reading of text within ancient Egyptian mummy cartonnage. However, by carefully selecting, optimising and combining techniques, text contained within these fragile and rare artefacts may eventually be open to non-destructive imaging, identification, and interpretation.

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Section: Optical Coherence Tomographymentioning

confidence: 99%

An assessment of multimodal imaging of subsurface text in mummy cartonnage using surrogate papyrus phantoms

Gibson¹,

Piquette²,

Bergmann

et al. 2018

Herit Sci

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“…Finally, a very recent trend is the application of OCT (Optical Coherent Tomography), an interferometric technique developed mainly for in vivo imaging of biological tissues, to the examination of paintings. This technique is similar to ultrasound, being a cross sectional imaging modality, which measures echo time delays of backreflected light; it is non contact and non invasive and has a very high sensitivity [26][27][28][29][30]. The development of OCT instruments and some applications in the artwork field are described in [30].…”

Section: Recent Developments and Trendsmentioning

confidence: 99%

“…3D-OCT was found to provide a more flexible and comprehensive analysis on paintings, with respect to high resolution infrared photography, at cost of more complex instrumentation and data processing [28]. Therefore, for highly transparent paint layers, the use of IR photography can still be suggested because of comparable performance, larger field of view, easy of use and rapidity [29]. Imaging NDT will continue to share advantages from the current diffusion of multimedia technology and development of effective electronic imaging tools, therefore we may expect their performance to grow further in the near future.…”

Section: Recent Developments and Trendsmentioning

confidence: 99%

“…Later, additional open-air museums (Haselünne, Schönberg, Klockenhagen, Gutach, Hermannstadt (Romania), Riga (Latvia); [9,11,17]), churches (Aachen Cathedral, Marienmünster Abbey Church, churches in Xanten, Kempen, Bernkastel-Kues, Mecklenburg-Vorpommern, Latvia, and Romania; [8,15,31]), castles, palaces and mills were investigated in cooperation with other institutions and experts [12,15,29,30,35]. Beyond this, studies on individual objects, such as objects of art in German collections and museums or historical chests in Schäßburg, Romania were conducted.…”

Section: The Objectsmentioning

confidence: 99%

“…The implementation of integrated pest management (IPM) [24,25], which has long been known from agriculture, forestry, and inventory management, only just began a few years ago in the case of wood-destroying organisms in a systematic manner [10]. Monitoring [2,[26][27][28][29], which comprises determination of the causative agent, type of damage and extent of damage, normally results in infestation mapping. If mass infestation is detected, an immediate decision for appropriate control or treatment measures is required.…”

Section: Introductionmentioning

confidence: 99%

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Wood Science for Conservation of Cultural Heritage – Florence 2007

Uzielli¹

2010

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The financial contribution of COST Action IE0601 and of University of Florence for covering the publication costs of this volume are gratefully ackwnoledged Main objectives and resultsThe main objectives of the Workshop, which have been achieved at a quite satisfactory level, can be summarized as follows:a) To present a "state of the art" about selected subjects dealt with by the Action (From the program: "Historic wood -structure and properties", "Wood material -ageing and non-biological degradation", "Assessment & Diagnosis", "Diagnosing the surface of painted wood" "Diagnosing the efficiency of object treatments", "Contributions from Wood Science to conservation issues", "Expressing needs in the field of conservation, of objects and/or monuments, in matter of Wood Science"); b) To improve mutual knowledge and acquaintance between MC Members, and WG members; c) To present current ongoing research, and inform specialists of different fields, all working towards conservation of WCHOs (Wooden Objects belonging to the Cultural Heritage), about the work of their colleagues and the scientific work being carried out in different Institutions; d) To provide an opportunity for discussing interdisciplinary subjects, which are very important for study and conservation of WCHOs; e) To identify the main subjects to be discussed in forthcoming activities.In fact this Workshop was instrumental for defining and addressing the future activities of the Action; a very good atmosphere, full of enthusiasm and of availability towards cooperation, emerged, and has been maintained during successive activities. The previous meeting (in Tervuren) and this one were both organized at short notice, as is normally the case at the beginning of an Action. They allowed interactions between scientists who often met for the first time and exchanges of general information from subjects of other fields. In the plenary meetings which followed, scientific contributions on well-focused subjects have been made possible by the longer time allowed for submission of papers. In this occasion several topics were also suggested for future general or focused meetings. Allocating and refereeing the PapersFor this Workshop, the Steering Committee (see Annex 2) fulfilled the role of Scientific Committee, preparing and managing its scientific aspects, and organising the refereeing process of the submitted papers, all of which have been peer-reviewed for this publication. Emphasis should be given to the fact that all accepted paper were deemed of high scientific calibre and deserved the same "dignity", no matter whether they were allocated as Oral presentations or Posters, such allocation being dictated by inescapable time constraints. Unfortunately some Authors were not able to submit their paper for publication; the titles of their presentations can be found in the Programme (Appendix 2). In some cases, the screen presentations they offered can be found on the Action's website . Others, not being of English mother tongue, submitted...

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FDML (incl. Parallelization)

Huber¹

2015

Optical Coherence Tomography

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Comparison of three-dimensional optical coherence tomography and high resolution photography for art conservation studies

Cited by 67 publications

References 23 publications

An assessment of multimodal imaging of subsurface text in mummy cartonnage using surrogate papyrus phantoms

An assessment of multimodal imaging of subsurface text in mummy cartonnage using surrogate papyrus phantoms

Wood Science for Conservation of Cultural Heritage – Florence 2007

FDML (incl. Parallelization)

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