in the book Document Analysis Systems, A. Dengel and A.L. Spitz (Eds.), World Scientific Publishing Co., 1995, pp. 413-421
There is a significant need for a system to recognise Braille documents in order to preserve them and make them available to more visually impaired people. Past approaches used expensive purpose-built and complicated hardware arrangements and attempted to recognise only single-sided documents. This paper describes an approach to a prototype system that uses a commercially available flat-bed scanner to acquire a grey-scale image of a Braille document from which the characters are recognised and encoded for reproduction or further processing. The system is flexible in that it is compact, easy to set up and use and in that it also handles inter-point (double sided) Braille documents. In addition, this solution is cost-effective since the hardware can also be shared with other applications.
R.T. Ritchings, A. Antonacopoulos, D. Drakopoulos , "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