Interactive Reconstruction of Archaeological Fragments in a Collaborative Environment

Abstract

The automatic reassembling of archaeological artefacts from a collection of fragments is a crucial problem in archaeology. It is arduous and time-consuming because the available information, in the form of fragments, is limited and "noisy". Previous research to assist in reassembly of artefacts has largely focused on either pattern-recognition or augmented-visualisation based perspectives. This paper presents a computer-aided and collaborative system for the reconstruction of archaeological artefacts, using boundarymatching estimation by string registration. The system has three key components. It uses invariant features to represent the 3D boundary curves of fragments. It utilises robust string matching to search the globally optimal alignment so as to tolerate noise. To further handle limited and noisy information, it creates a collaborative environment to allow multiple archaeologists to remotely reassemble artefacts at the same time. A series of experiments verify the acceptable performance of the system as well as its components.

Automatic 3D digital patching for fragmented cultural relics repair

“…In Kampel and Sablatnig, 2003, researchers proposed a method based on the volume of digital patching, the method of pottery fragments in accordance with the central axis of rotation by model, the volume of this model are compressed pottery body model. In Marie and Qasrawi (2005) and Lu et al (2007), researchers used fragments information to generate 3D model based on 3D geometry, and then implemented manual stitching with the graphical interface from the computer. Digital patching algorithm can be generally divided into four steps as shown in Figure 1.…”

Reconstruction algorithm for archaeological fragments using slope features

“…Additionally, the process may require years of tedious work [3]—especially in case of absent pieces—or could require laborious effort and experienced archaeologists [2,4]. Significant developments in computer technologies have improved the reconstruction procedures for fragmented archaeological objects [5–9]; a large proportion of this has relied on the fact that pots are axially symmetric. Some researchers have proposed a complete framework with which to automatically assemble pots from 3D fragments [10,11].…”

Ανάπτυξη Μεθόδου Και Μετρήσεις Μαγνητικών Ιδιοτήτων Αρχαιολογικών Υλικών Και Πετρωμάτων

“…, i=x,y,z ππνινγίδνληαη από ηηο ζρέζεηο επαξθνύο κήθνπο ζύκθσλα κε ηε ζεσξία κεηάδνζεο ζθαικάησλ: 33 Σηελ πεξίπησζε όπνπ D<d θαη ζ = ζ D ηα ζθάικαηα δΜ i ησλ ζπληζησζώλ ηεο καγλήηηζεο…”

“…. Από ηηο κεηξήζεηο ησλ ζπληζησζώλ Β i (i=x,y,z) ηνπ καγλεηηθνύ πεδίνπ θαη ηελ ηηκή ηεο γσλίαο ζ = ζ L ή ζ = ζ D ππνινγίδνληαη ζε θάζε πεξίπησζε, νη ζπληζηώζεο M i (i=x,y,z) ηεο καγλήηηζεο θαη ηα ζθάικαηα δM i , από ηηο αληίζηνηρεο ζρέζεηο (28α,β) επαξθνύο32 (D>d) ή αλεπαξθνύο33 (D<d) κήθνπο 29. Τν ζθάικα δd ηνπ κέγηζηνπ επαξθνύο κήθνπο d = L.|εθζ| πνπ θαηαιακβάλεη ν θπιηλδξηθόο ρώξνο πνπ δηεγείξεη ηνπο αηζζεηήξεο ζηε δηεύζπλζε ηεο xz B ππνινγίδεηαη ζύκθσλα κε ηε ζεσξία κεηάδνζεο ζθαικάησλ από ηε ζρέζε: .…”