Analyzing fracture patterns in theran wall paintings

Authors:
H. Shin;C. Doumas;T. Funkhouser;S. Rusinkiewicz;K. Steiglitz;A. Vlachopoulos;T. Weyrich
Affiliations:
Princeton University, Princeton, NJ;National University of Athens, Athens & Akrotiri Excavation, Thera, Greece;Princeton University, Princeton, NJ;Princeton University, Princeton, NJ;Princeton University, Princeton, NJ;University of Ioannina, Ioannina & Akrotiri Excavation, Thera, Greece;University College London, London, UK
Venue:
VAST'10 Proceedings of the 11th International conference on Virtual Reality, Archaeology and Cultural Heritage
Year:
2010

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Abstract

In this paper, we analyze the fracture patterns observed in wall paintings excavated from Akrotiri, a Bronze Age Aegean city destroyed by earthquakes preceding a volcanic eruption on Thera (modern Santorini) around 1630 BC. We use interactive programs to trace detailed fragment boundaries in images of manually reconstructed wall paintings. Then, we use geometric analysis algorithms to study the shapes and contacts of those fragment boundaries, producing statistical distributions of lengths, angles, areas, and adjacencies found in assembled paintings. The result is a statistical model that suggests a hierarchical fracture pattern, where fragments break into two pieces recursively along cracks nearly orthogonal to previous ones. This model could be useful for predicting fracture patterns of other wall paintings and/or for guiding future computer-assisted reconstruction algorithms.