Extended Data Fig. 6: Comparison of different index-based algorithms in algal bloom detection in various coastal regions.
From: Coastal phytoplankton blooms expand and intensify in the 21st century
Image-specific thresholds (annotated within the panels) are required (labeled within the panels) for RI50, ABI (estimated with FLHRrc)48, RBD51, KBBI51, and RDI52 to delineate accurate bloom areas (i.e., high nFLH values, which appear as bright and darkish features on the ERGB images). The left panels are the bloom areas (green pixels) extracted using our CIE-fluorescence algorithm. The RGB-true color and ERGB composites are shown in Extended Data Fig. 3. Created using ArcMap 10.4.
