Abstract: “This paper presents a new algorithm to remove misalignment of scanned Braille pattern using image processing. It is known that because of scanner imperfections, error occurs in scanned Braille pattern document. In this paper indexing method has been used for fixing the corner pixel value of tilted Braille pattern. The proposed work employs basic triangular property. Thereby we have calculated the angle by which the corner dots have been thrown out of alignment on a respective side. Since a variety of different Braille patterns are available, some being regular and exactly symmetrical, sorting method is used for symmetrical and unsymmetrical Braille pattern. This simulation has been carried out in MATLAB (R 2010a) and yields almost perfect results with acceptable errors and removes misalignment of Braille pattern.”

Keywords: Braille, Indexing, Median Filtering, Sorting, Image