A new method to separation of Farsi and Arabic sub-words using image processing techniques

letters separation and word's units is one of the most important parts of text recognition algorithms. In the Farsi language, these parts consist of single letters and connected letters which called "sub-word". Therefore, separation for these units has a main role in developing text processing's algorithms. In this paper, a method based on connected-component labeling techniques with high accuracy is suggested that makes letters and sub-words separation in Farsi font in any size, possible. Experiments show more than 90 percent accuracy in this method