@inproceedings{ICDAR-2011-PanZSN,
	author        = "Pan Pan and Yuanping Zhu and Jun Sun and Satoshi Naoi",
	booktitle     = "{Proceedings of the 11th International Conference on Document Analysis and Recognition}",
	doi           = "10.1109/ICDAR.2011.116",
	isbn          = "978-1-4577-1350-7",
	pages         = "548--552",
	publisher     = "{IEEE Computer Society}",
	title         = "{Recognizing Characters with Severe Perspective Distortion Using Hash Tables and Perspective Invariants}",
	year          = 2011,
}