Dynamic Optical Braille Recognition (OBR) System

Braille is one of the most important means of written communications between visually-impaired and sighted people, so it gains the research interest. This paper describes a new technique for recognizing Braille characters in Arabic double sided Braille document. The main challenge resolved here is to build up a complete OBR system that is completely invariant to scale of the scanned image starting from scanner passing image enhancement stages and followed by stages to detect parts of dots, then detecting the whole dot, and finally the Braille cell recognition. This technique can be applied regardless the grade of the Braille document (Grade one or Grade two). Besides, the proposed stages up to the Braille cell recognition can be used in recognizing Braille documents written in other languages too.