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 This tool performs document image binarization (i.e. transform colour/grayscale
 to black-and-white pixels) for OCR using multiple trained models. 

-The method used is based on _Calvo-Zaragoza/Gallego (2019). [A selectional auto-encoder approach for document image binarization](https://arxiv.org/abs/1706.10241)_.
+The method used is based on _Calvo-Zaragoza/Gallego, 2018. [A selectional auto-encoder approach for document image binarization](https://arxiv.org/abs/1706.10241)_.

 ## Installation