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Analysis of Scanned Braille Documents
in the book Document Analysis Systems, A. Dengel and A.L. Spitz (Eds.), World Scientific Publishing Co., 1995, pp. 413-421
A Robust Braille Recognition System
Document Analysis Systems VI: Proceedings of the 6th International Association for Pattern Recognition (IAPR) Workshop on Document Analysis Systems (DAS2004), S. Marinai and A.R. Dengel (Eds.), Springer Lecture Notes in Computer Science, LNCS 3163, Florence, Italy, September 2004, pp. 533-545