Results
The tool and main
features
The operational version of the vegetation monitoring tool can be found
on https://vegetatiemonitor.netlify.com/#/verken (in Dutch), best
used in the Chromium or Google Chrome browsers. The main screen shows
the satellite image layer, the legal vegetation map, the classified
satellite image, and the comparison map, see Figure 4 and Table 2. The
time-slider allows selecting pre-classified year maps or dates of
sentinel-2 images that can be classified on the fly of any area of
interest. Classifications can be downloaded in geotiff for GIS analysis.
After classification (day or year), a land cover pie chart of clicked
upon individual cadastral polygons can be made and compared to the
‘allowed’ distribution. The sentinel-2 images available in the daily
analysis- mode are updated every night with the most recently available
images and allow for the inspection of the current situation (provided
clouds do not cover the area of interest). In the top bar, users can
switch to a lightweight field (‘veld’ in Dutch) version of the tool
showing GPS location from smartphone or tablet to aid field visits.