{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:39:55Z","timestamp":1760243995922,"version":"build-2065373602"},"reference-count":23,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2010,9,14]],"date-time":"2010-09-14T00:00:00Z","timestamp":1284422400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The granite processing sector of the northwest of Spain handles many varieties of granite with specific technical and aesthetic properties that command different prices in the natural stone market. Hence, correct granite identification and classification from the outset of processing to the end-product stage optimizes the management and control of stocks of granite slabs and tiles and facilitates the operation of traceability systems. We describe a methodology for automatically identifying granite varieties by processing spectral information captured by a spectrophotometer at various stages of processing using functional machine learning techniques.<\/jats:p>","DOI":"10.3390\/s100908572","type":"journal-article","created":{"date-parts":[[2010,9,19]],"date-time":"2010-09-19T09:41:46Z","timestamp":1284889306000},"page":"8572-8584","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Identification of Granite Varieties from Colour Spectrum Data"],"prefix":"10.3390","volume":"10","author":[{"given":"Mar\u00eda","family":"Ara\u00fajo","sequence":"first","affiliation":[{"name":"Department of Environmental Engineering, University of Vigo, Vigo 36310, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Javier","family":"Mart\u00ednez","sequence":"additional","affiliation":[{"name":"Academia General Militar, Centro Universitario de la Defensa, Zaragoza 50090, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Celestino","family":"Ord\u00f3\u00f1ez","sequence":"additional","affiliation":[{"name":"Department of Environmental Engineering, University of Vigo, Vigo 36310, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 Antonio","family":"Vil\u00e1n","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, University of Vigo, Vigo 36310, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2010,9,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"75","DOI":"10.2343\/geochemj.23.75","article-title":"Study of colors and degrees of weathering of granitic rocks by visible diffuse reflectance spectroscopy","volume":"23","author":"Nagano","year":"1989","journal-title":"Geochem. 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