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- W2922233791 abstract "An accurate mapping of gullies is important since they are still major contributors of sediment to streams. Mapping gullies in many areas is difficult because of the presence of dense canopy, which precludes the identification through aerial photogrammetry and other traditional remote sensing methods. Moreover, the wide spatial extent of some gullies makes their identification and characterization through field surveys a very large and expensive proposition. This work aims to develop an object-based image analysis (OBIA) to detect and map gullies based on a set of rules and morphological characteristics retrieved by very high resolution (VHR) imagery. A one-meter resolution LiDAR Digital Elevation Model (DEM) is used to derive different morphometric indexes, which are combined, by using different segmentation and classification rules, to identify gullies. The tool has been calibrated using, as reference, the perimeters of two relatively large gullies that have been measured during a field survey in the Calhoun Critical Zone Observatory (CCZO) area in the Southeastern United States." @default.
- W2922233791 created "2019-03-22" @default.
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- W2922233791 date "2018-09-20" @default.
- W2922233791 modified "2023-09-23" @default.
- W2922233791 title "Object-Based Image Analysis Technique for Gully Mapping Using Topographic Data at Very High Resolution (VHR)" @default.
- W2922233791 doi "https://doi.org/10.29007/shdh" @default.
- W2922233791 hasPublicationYear "2018" @default.
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