Relative Terrain Height DEM transform for the mid-Juruá region, Brazilian Amazon

The Relative Terrain Height (RTH) is a novel DEM transform that
facilitates 1) minimizing regional terrain height differences when
comparing elevations of distal floodplain features; 2) optimizing terrain
data for input to image segmentation algorithms; and 3) delineating
boundaries of terrain features such as floodplains, fluvial terraces,
interfluvial flats, and hillslopes. An example of RTH is given for a 2° x
2° area including the mid-Juruá region of the Brazilian Amazon, derived
from the Copernicus GLO-30 Digital Elevation Model (DEM), at a resolution
of 30m. The transform is based on differencing versions of the input DEM
at 30 m (the original resolution) and 3000 m (resampled again to 30 m).
The resulting RTH layer reflects the height of a feature relative to its
surroundings, while retaining the detail of the original DEM, and the
transform can easily be produced using any image processing software. The
RTH is provided in GeoTIFF format. The input data set used to produce the
RTH data product was the Copernicus WorldDEM-30.