Figure 2
From: Novel approach to enhance coastal habitat and biotope mapping with drone aerial imagery analysis
Optically Derived Bathymetry estimation from aerial imagery mosaic and photogrammetric generated digital surface model (DSM); with: (a) DSM depth variation (m) over rocky bottom and DSM contours with 2-m interval (blue lines); (b) combined (normalized) ln-RED index and ratio of ln-Green to ln-Blue index and smoothed, contextually edited, depth contours used for Optically Derived Bathymetry estimation using OBIA (see above), and; (c) resulting estimated depth classes. Map and figure generated in ESRI ArcGIS Desktop v10.3.1.
