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Identification of Lithology Using Sentinel-2A Through an Ensemble of Machine Learning Algorithms

Identification of Lithology Using Sentinel-2A Through an Ensemble of Machine Learning Algorithms
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Author(s): Imane Bachri (Hassan II University of Casablanca, Morocco), Mustapha Hakdaoui (Hassan II University of Casablanca, Morocco), Mohammed Raji (Hassan II University of Casablanca, Morocco), Abdelmajid Benbouziane (Hassan II University of Casablanca, Morocco) and Hicham Si Mhamdi (Faculty of Sciences and Techniques, Moulay Ismail University, Morocco)
Copyright: 2022
Volume: 13
Issue: 1
Pages: 17
Source title: International Journal of Applied Geospatial Research (IJAGR)
Editor(s)-in-Chief: Donald Patrick Albert (Sam Houston State University, USA) and Samuel Adu-Prah (Sam Houston State University, USA)
DOI: 10.4018/IJAGR.297524

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Abstract

Remotely sensed data has become an effective, operative and applicable tool that provide critical support for geological surveys and studies by reducing the costs and increasing the precision. Advances in remote-sensing data analysis methods, like machine learning algorithms, allow for easy and impartial geological mapping. This study aims to carry out a rigorous comparison of the performance of three supervised classification methods: Random Forest, k-Nearest Neighbor and maximum likelihood using remote sensing data and additional information in Souk El Had N’Befourna region. The enhancement of remote sensing geological classification by using geomorphometric features, principal component analysis, gray level co-occurrence matrix (GLCM) and multispectral data of the Sentinel-2A imagery was highlighted. The Random Forest algorithm showed reliable results and discriminated limestone, dolomite, conglomerate, sandstone and rhyolite, silt and Alluvium, ignimbrite, granodiorite, Lutite, granite, and quartzite. The best overall accuracy (~91%) was achieved by Random Forest algorithm.

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