Monitoring the laser cleaning of granites by means of multispectral image analysis

M. P. Fiorucci; A. J. López; A. Ramil; S. Pozo; T. Rivas

doi:10.1117/12.2063777

22 August 2014 Monitoring the laser cleaning of granites by means of multispectral image analysis

M. P. Fiorucci, A. J. López, A. Ramil, S. Pozo, T. Rivas

Proceedings Volume 9286, Second International Conference on Applications of Optics and Photonics; 928610 (2014) https://doi.org/10.1117/12.2063777
Event: Second International Conference on Applications of Optics and Photonics, 2014, Aveiro, Portugal

Abstract

In this work it is presented a study about the ability of multispectral techniques for evaluating in situ, nondestructively, the progress of laser removal of crusts and paints in granitic rocks. For this purpose, granites with different characteristics were cleaned by the third harmonic of a Nd:YVO4 laser, and a multispectral camera was used to monitor the process by recording images of the rock surface during the cleaning. Although preliminary, the results are promising and show that the comparative analysis of the spectra could be used for successfully monitoring the cleaning process. Furthermore, it has been possible to discriminate between black crusts of different nature, biogenic and anthropogenic, by analyzing specific spectral bands.

Citation Download Citation

M. P. Fiorucci, A. J. López, A. Ramil, S. Pozo, and T. Rivas "Monitoring the laser cleaning of granites by means of multispectral image analysis", Proc. SPIE 9286, Second International Conference on Applications of Optics and Photonics, 928610 (22 August 2014); https://doi.org/10.1117/12.2063777

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