Automatic Nacre Thickness Measurement of Tahitian Pearls - Archive ouverte HAL
Conference Papers Year : 2015

Automatic Nacre Thickness Measurement of Tahitian Pearls

Martin Loesdau
  • Function : Author
  • PersonId : 1003510
Sébastien Chabrier
Alban Gabillon

Abstract

In this paper a methodology for an automatized measurement of the nacre thickness of Tahitian pearls is presented. An adapted snake approach as well as our own developed circle detection algorithm are implemented to extract the nacre boundaries out of X-ray images. The results are validated by experts currently performing manually the obligatory nacre thickness control for millions of Tahitian pearls that are exported each year. Equivalent articles propose methods suitable for round pearls, whereas this paper contains methods to evaluate the nacre profile of pearls independently of their shape. As the algorithms are not specifically parametrized for Tahitian pearls, the methods can be adapted for quality assessment of other pearls as well.

Dates and versions

hal-01711242 , version 1 (16-02-2018)

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Cite

Martin Loesdau, Sébastien Chabrier, Alban Gabillon. Automatic Nacre Thickness Measurement of Tahitian Pearls. 12th International Conference. ICIAR 2015, Jul 2015, Niagara Falls, United States. ⟨10.1007/978-3-319-20801-5_49⟩. ⟨hal-01711242⟩

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