Time and frequency domain analysis of Etruscan pottery magnified videos |
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| Enzo Fioriti, Eugenia Verrigni Petrei Castelli, Alessandro Colucci, Ivan Roselli |
- Abstract:
- In the present study, the displacement timeseries of ancient Etruscan pottery was analysed. The investigated pottery is exhibited within a museum display case and subjected to environmental vibrations induced by nearby urban transportation traffic. Some mathematical tools suited to non-linear and non-stationary analysis, namely the Recurrence Plot and the Stockwell transform, were used for the first time in this particular field. Even though the pottery displacements were small, the use of conventional high accuracy contact sensors should be discarded, due to the extreme fragility of the artefacts. Therefore, it was necessary to resort to a contactless methodology based on video recordings. In particular, the Motion Magnification method was applied to magnify the pottery displacements in order to increase the signal-to-noise ratio, facilitating the analysis of the vibrations. Moreover, it is shown that the Recurrence Plot is able to asses the presence of a real periodic dynamic, and therefore to confirm the frequency domain analysis results even for noisy, non-stationary signals.
- Download:
- IMEKO-Metroarchaeo-2025-030.pdf
- DOI:
- 10.21014/tc26-2025.030
- Event details
- IMEKO TC:
- TC26
- Event name:
- TC26 MetroArcheo Conference 2025
- Title:
Metrology for Archaeology and Cultural Heritage
- Place:
- Bergamo, ITALY
- Time:
- 15 October 2025 - 17 October 2025