15/04/2019

Post doctoral positon - Inscriptions and architecture: analysis and visualization of blocks in a perspective of monumental restitution in 3D (Vaison - la - Romaine: theater, funerary monuments).


  • ORGANISATION/COMPANY
    Université Grenoble Alpes
  • RESEARCH FIELD
    HistoryArchaeology
  • RESEARCHER PROFILE
    Recognised Researcher (R2)
  • APPLICATION DEADLINE
    26/04/2019 17:00 - Europe/Athens
  • LOCATION
    France › Grenoble
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    35
  • OFFER STARTING DATE
    01/06/2019

CDP TITLE: Patrimalp

JOB PROFILE (Title): Architecture, Inscriptions: analyse et visualisation de blocs dans une perspective de restitution monumentale en 3D du théâtre de Vaison-la-Romaine (construction, états successifs).

Inscriptions and architecture: analysis and visualization of blocks in a perspective of monumental restitution in 3D (Vaison-la-Romaine: theater, funerary monuments).

SCIENTIFIC HOSTING DEPARTMENT (LABORATORY’S NAME): Laboratoire Universitaire Histoire Cultures Italie Europe (LUHCIE)

1 Univ. Grenoble Alpes

SUPPORTER’S NAME: Nicolas MATHIEU (UGA) et Romain VERGNE

CONTACT: Nicolas MATHIEU (UGA) et Romain VERGNE Nicolas MATHIEU (UGA) et Romain VERGNE (INRIA)

RESEARCH FIELD (cf mots clefs sur Euraxess Jobs): Vaison-la-Romaine, antiquité romaine, archéologie, épigraphie, blocs d'architecture, restitution, numérisation, visualisation 3D.

Keywords: Vaison-la-Romaine, roman antiquity, archeology, epigraphy, architecture blocks, restitution, digitization, 3D visualization

Epigraphists, architects, archaeologists who study the ancient worlds have been working together for twenty years with the goal to put back the supports (including their inscriptions if any) in an archaeological, historical, technical and cultural context. This is the well established scientific approach adopted for the future volume of Inscriptions latines de Narbonnaise (ILN) VII. Les Voconces - 2. Vaison (Gallia, XLIVe Supplément - ILN). However, this method shows limits to reproduct or even interpret some documents. These limitations are mainly due to the poor ability of the human eye to precisely see and inspect the uncovered materials. Indeed, indiscernible surface details, or weathering effects are important to distinguish volontary or accidental carvings, vicissitudes of time etc. This uncertainty is likely to compromise the proposals done to restitute monuments and to insert blocks in coherent sets that are not yet identified (curved, rectilinear, composite monuments; internal, external positioning; monument or composite placement; etc.).

Depending on their types, the current techniques used by epigraphists to improve the legibility of the studied documents are the following:

-Reflectance Transformation Imaging (RTI), -dense correlation photogrammetry (one of the most widely used methods nowadays for lapidary as well as non-lapidary epigraphy, such as lead objects), -the open light method, more accessible, already provides interesting results3.

Concerning Vaison-la-Romaine, two cases raise important questions and offer a potential for research:

- the theater contains many scattered blocks, sometimes re-used, discovered at different times and kept in different places that have not been clearly identified. Consequently, any restitution of the building remains to be done (especially the entire chronology of the construction, the antique restorations, etc.);

- epigraphic blocks, partly epigraphic or monumental anigraphs, probably originate from funerary monuments for which the types, models, modules, etc. remain to be "constructed".

Potential curvature of blocks, materials, in particular to associate or not anigraphic blocks to epigraphic blocks, possible physicochemical analyzes and their interpretation in order to know whether blocks that look close may or may not be connected and inserted together or in the whole building, possible interpretation in terms of phases (construction, re-use, etc.) are topics that cannot be studied without relying on multi-disciplinary researches.

This post-doctoral contract aims at providing a collaboration between history and archeology on one hand, and computer graphics on the other hand:

- to learn how to analyze and visualize surfaces, for instance to enhance the curvature of surfaces, defined for a specific type of construction or inserted in a construction: circular mausoleum for epigraphic blocks or anigraphic blocks; elements of the

3 See references 1 in the bibliography

structure of Vaison theater (for example terraces, exterior elevations) or elements of its scenery (almost totally unknown, whether it is the decorative structure such as the orchestra, the front stage, and the entrances or what decorated this structure, like sculptures, inscribed slabs, etc.);

- to try to make multi-scale analyzes of the surfaces to distinguish traces resulting from different phenomena (blows, claws, shards, roughness etc.) and better understand the nature or initial shape of the original blocks, their manipulations, etc.;

- to try to participate in the restitution of broken, scattered, fragmentary objects (Huang et al., 2006; Hostein 2014). Several preserved blocks originating from the antique theater of Vaison and stored in the reserves of the Calvet Museum in Avignon, known but never really studied from a technical point of view (material, architectonic type, structure and insertion in a building), could thus be compared with others remained on the spot and better interpreted4.

Such analyzes and perspectives can only be productive in the combination of disciplinary, technical and experimental skills. With some epigraphy, art history and architecture knowledge about the vesonnais area, the postdoctoral candidate will identify the objects that should be analyzed and will be able to ask the questions that remain unanswered at this time. Examples of methods of analysis and visualization of surface and volume in 3D exist (Vergne et al., 2011) and could be the starting point. The identification of the regions to be analyzed, the learning of the 3D manipulation with dedicated tools such as Meshlab, the reflection on possible correspondences between archaeological objects and their analyzes and visualizations in computer graphics will make it possible to establish convergences between the two disciplinary fields5.

Bibliography:

1) Ongoing research work via the Pôle archéologique de Grant-Patrimoine Atlantique and the laboratory Arc’Antique

- 3D photogrammetric research program with protocols for epigraphic studies and digital anastylosis. - Research program restoration and reading of the tablets of defixion in lead (study day on Thursday 13 October 2017).

- Nicolas Mathieu, « Rancon (Haute-Vienne), cité des Lémovices : autour d’une rare attestation de Pluton dans les Gaules (CIL, XIII, 1449) », Travaux d’Archéologie Limousine (TAL), 35, 2015, p. 45-55

2) Ongoing experiments, via the research program Digital Epigraphy (DigEp)

- Anthony Hostein, « Inscription latine d’Autun, le puzzle », 2014, CNRS, vidéo. Réalisateur, Laurent Clause

- « Le numérique au secours des musées : une inscription latine en 1200 fragments. Synthèse sur le travail en cours depuis 2012/2013 de numérisation en 3D de profil de fragments, création d’un algorithme de recherche des profils apte à faire des rapprochements.

- E. Fauvet, O. Laligant, Fr. Truchet, « Toward a virtual reconstruction of an antique three-dimensional marble puzzle », Journal of electronic Imaging, 2016 (1), 011023 (4 janv. 2017).

3)

- Romain Vergne, Pascal Mora, Frédéric Boutoulle. La numérisation et la visualisation 3D de l'épitaphe de Costaulus. Frédéric Boutoulle and Dany Barraud and Jean-Luc Piat. Fabrique d'une ville médiévale. Saint-Émilion au Moyen Âge, Supplément 26, Ausonius Éditions, 2011, Aquitania, 978-2-910763-27-5.

- Romain Vergne, Romain Pacanowski, Pascal Barla, Xavier Granier, Christophe Schlick. Improving Shape Depiction under Arbitrary Rendering. IEEE Transactions on Visualization and Computer Graphics, Institute of Electrical and Electronics Engineers, 2011, 17 (8), pp.1071 - 1081.

- Qi-Xing Huang, Simon Flöry, Natasha Gelfand, Michael Hofer, and Helmut Pottmann. 2006. Reassembling fractured objects by geometric matching. ACM Trans. Graph. 25, 3 (July 2006), 569-578.

Eligibility criteria

Applicants must hold a PhD degree (or be about to earn one) (doctorat) or have a University degree equivalent to a European PhD (8-year duration)

Applicants will have to send an application letter in French or English and attach:

- Their last diploma

- Their CV

- Letters of recommendation are welcome.

Address to send their application to: nicolas.mathieu@univ-grenoble-alpes.fr et romain/vergne@inria.fr

Selection process

Application deadline: 26/04/2019 at 23:59 (CET)

Applications will be evaluated through a three-step process:

1. Eligibility check of applications in 29 avril 2019

2. 1st round of selection: the applications will be evaluated by a Review Board in 3/9 mai 2019. Results will be given in 10 mai 2019.

3. 2nd round of selection: shortlisted candidates will be invited for an interview session in Grenoble on 22 mai 2019.

Additional comments

Required languages: French

TYPE of CONTRACT: 1 an

JOB STATUS (Full time or part time): full

HOURS PER WEEK: 35

OFFER STARTING DATE: 26 mars 2019

APPLICATION DEADLINE: 26 avril 2019

Offer Requirements

  • REQUIRED LANGUAGES
    FRENCH: Good
    ENGLISH: Good

Skills/Qualifications

Applicants must hold a PhD degree (or be about to earn one) (doctorat) or have a University degree equivalent to a European PhD (8-year duration)

Map Information

Job Work Location Personal Assistance locations
Work location(s)
1 position(s) available at
Université Grenoble Alpes
France
Grenoble

EURAXESS offer ID: 399960

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