**3.1 Tools**

Orfeo Toolbox (OTB) was used for digital processing of the imagery. It is an open-source project that supports processing of remote sensing data including high resolution optical, multispectral and radar images [25]. The algorithms utilized for the purpose of this study were accessed from Python through the otbApplication module. Spatial analysis procedures were carried out in QGIS, a free and opensource Geographic Information System that supports the creation, editing visualization and publication of geospatial data [26].
