Processing FIL Norway imagery

The biannual delivery of the FIL Norway ECW imagery dataset can be efficiently processed and converted to GeoPackage using the Python package filnorway_processor. This package will split the input according to a custom grid with 32768 x 32768 meters cells. The output is stored as GeoPackages with WEBP compression, and organized by county. These GeoPackages are then used to update the NorwayImageryCompressed product series.

Dependencies

• GDAL >= 3.8.0 (with ECW driver)

The easiest way to get a Python environment where these dependencies are met, is to install the latest version of QGIS . Included is the OSGeo4W shell, where you can install and use the package.

Installation

The package is distributed as a Python wheel-file. Install using pip:

python -m pip install c:\path\filnorway_processor-1.0.6-py3-none-any.whl

Arguments

Argument	Description
--input	Input directory containing all FIL Norway ECW files
--fylker	Vector dataset with one layer per Norwegian county. Does not have to contain all counties.
--fotodato	"Fotodato" dataset with photography dates and coverage included in the delivery. Should be a single file/layer. This is used to clip datasets to valid data areas.
--outpath	Output directory.
-q, --quality	WEBP quality on the output GeoPackages. Default value: 5
-p, --num_processes	Maximum number of parallel processes to use
--debug	Enable more detailed log messages

Examples

Display help:

python -m filnorway_processor --help

Process FIL Norway for the entire country using 16 parallel processes:

python -m filnorway_processor --input \\files\filnorway\ecw\  --fotodato \\files\filnorway\fotodato\fotodato_2025_02.shp --fylker c:\data\norway_counties_shapefiles\ --output \\files\filnorway\gpkg -p 16