The advancement and accessibility of digital computers and the introduction of the Internet and World Wide Web resulted in massive information explosion all over the world. Large amount of handwritten, typewritten and printed documents contain numerous information and knowledge of different areas. To make the information and knowledge embedded in these documents accessible to the public, it is desirable to digitize, organize and develop retrieval systems for such kind of documents. In response to this need, researchers are moving towards recognition-free approach since optical character recognition OCR engines have various limitations.