Recognition and Clustering of Ancient Coins

Séminaire DHAI 2022-2023
Mardi 6 décembre 2022 Mardi 6 décembre 2022
De 12h à 14h
ENS-PSL, salle de conférences du Centre Sciences des Données

45 rue d'Ulm
75005 Paris

48.8422951, 2.3442717

Séance du séminaire DHAI avec Sofiane Horache (Mines ParisTech) et Katherine Gruel (ENS)

Clustering coins according to their die is a problem that has many applications in numismatics. This clustering is crucial for understanding the economic history of tribes (especially for tribes for whom few written records exist, such as the Celts). It is a difficult task, requiring a lot of times and expertises. However, there is very little work that has been done on coin die identification. This presentation will present an automatic tool to know if two patterns have been impressed with the same tool, especially to know if two coins have been struck with the same die. Based on deep learning-based registration algorithms, the proposed method has allowed us to classify a hoard of a thousand Riedone coins dating from the 2nd century BC. This treasure allowed us to build an annotated dataset of 3D acquisitions called Riedones3D. Riedones3D is useful for Celtic coin specialists, but also for the computer vision community to develop new coin die recognition algorithms. Rigorous evaluations on Riedones3D and on other Celtic works show the interest of the proposed method.


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Mardi 6 décembre 2022