[ Enter the Past ] Vienna - Austria, 8-12 April 2003
 
ID_person: 69/78 (Laugerotte)
ID_paper: 53
C. Laugerotte/P. Anagnostopoulos2/A. Dierkens2 /N. Warzée1
1 Systèmes Logiques et Numériques, Université Libre de Bruxelles, Belgium
2 Unité de Recherche en Histoire Médiévale, Université Libre de Bruxelles, Belgium
Virtual 3D reconstruction of a rood-screen from its archaeological fragments

The micro-architecture in the Netherlands (XVth - XVIth centuries) is being studied with a comparative method. More than ten thousand exceptional fragments of stone sculpture have been excavated at the Brussels main collegiate church. The study reveals that the fragments are part of a rood-screen and a carved tabernacle.
The purpose of this project is to develop a method in order to help the art historians and archaeologists to reconstruct archaeological objects. A first manual classification divides the non painted remains into three main groups: architectural, floral and figurative motives. We first focus on the architectural remains.
At present, several automatic computerized methods exist, but most of them apply to particular kinds of objects like potteries, plates… which are not true 3D common objects.
We propose an approach that virtually manipulates the digitalized fragments through 3D geometric primitives. Up to now, these primitives are planes, lines and circles describing characteristics present on the architecture. The use of these primitives, by putting them in correspondence and by respecting their continuity, reduces and simplifies the range of possible associations between fragments. Then, the result of the association performed by the computer is proposed to an expert who can validate it.
Keywords: 3D scanning, 3D analysis, computer graphics , object reconstruction

[gor]10-02-2003