Functional classification of ornamental stone using machine learning techniques

Authors:
M. López;J. Martínez;J. M. Matías;J. Taboada;J. A. Vilán
Affiliations:
Department of Mechanical Engineering, University of Vigo, 36310 Vigo, Spain;Department of Environmental Engineering, University of Vigo, 36310 Vigo, Spain;Department of Statistics, University of Vigo, 36310 Vigo, Spain;Department of Environmental Engineering, University of Vigo, 36310 Vigo, Spain;Department of Mechanical Engineering, University of Vigo, 36310 Vigo, Spain
Venue:
Journal of Computational and Applied Mathematics
Year:
2010

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Abstract

Automated classification of granite slabs is a key aspect of the automation of processes in the granite transformation sector. This classification task is currently performed manually on the basis of the subjective opinions of an expert in regard to texture and colour. We describe a classification method based on machine learning techniques fed with spectral information for the rock, supplied in the form of discrete values captured by a suitably parameterized spectrophotometer. The machine learning techniques applied in our research take a functional perspective, with the spectral function smoothed in accordance with the data supplied by the spectrophotometer. On the basis of the results obtained, it can be concluded that the proposed method is suitable for automatically classifying ornamental rock.