Multi-Regional landslide detection using combined unsupervised and supervised machine learning
نویسندگان
چکیده
Landslide detection is concerned with delineating the extent of landslides. Most existing works on landslide have limited geographical extents. Therefore, models developed out these studies might perform poorly when applied to regions different characteristics. This study investigates an Object-Based Image Analysis methodology built unsupervised and supervised Machine Learning detect location landslides occurred in multiple across world. The utilized data includes Sentinel-2 multi-spectral satellite imagery ALOS Digital Elevation Model. In segmentation stage, pre post-landslide images undergo using K-means clustering. Following stage dataset preparation removing highly-correlated features from dataset, two Random Forest classifiers (RF1 RF2) are trained tested datasets measure generalization level algorithms RF1 spanning over more diversities than RF2 dataset. results show that RF can successfully segments test precision = 0.96 recall for 0.90 0.87 RF2. Further validation shows that, compared RF2, less mislabelled non-landslide segments.
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ژورنال
عنوان ژورنال: Geomatics, Natural Hazards and Risk
سال: 2021
ISSN: ['1947-5705', '1947-5713']
DOI: https://doi.org/10.1080/19475705.2021.1912196