@inproceedings{DRR-2006-ZavorinBTH,
	author        = "Ilya Zavorin and Eugene Borovikov and Mark Turner and Luis Hernández",
	booktitle     = "{Proceedings of the 13th Conference on Document Recognition and Retrieval}",
	doi           = "10.1117/12.641753",
	isbn          = "978-0-8194-6107-0",
	publisher     = "{SPIE}",
	title         = "{Adaptive pre-OCR cleanup of grayscale document images}",
	year          = 2006,
}