This tool allows you to get the number of columns for a RGB document image.
Documents with more than 6 columns will be classified as 6 column documents.
pip install .
sbb_column_classifier --model <directory of models> example.tif example-dir/
sbb_column_classifier can also produce a SQLite3 database file with results,
using the --db-out results.sqlite3 option.
Models can be found here qurator-data.de.