# Binarization > Binarization for document images # Examples ## Introduction This tool performs document image binarization (i.e. transform colour/grayscale to black-and-white pixels) for OCR using multiple trained models. ## Installation Clone the repository, enter it and run `pip install .` ### Models Pre-trained models can be downloaded from here: https://qurator-data.de/sbb_binarization/ ## Usage ```sh sbb_binarize \ --patches \ -m \ \ ``` **Note** In virtually all cases, the `--patches` flag will improve results.