  Optical Character Recognition (OCR) has been a topic of interest for many
years. It is defined as the process of digitizing a document image into its
constituent characters. Despite decades of intense research, developing OCR
with capabilities comparable to that of human still remains an open challenge.
Due to this challenging nature, researchers from industry and academic circles
have directed their attentions towards Optical Character Recognition. Over the
last few years, the number of academic laboratories and companies involved in
research on Character Recognition has increased dramatically. This research
aims at summarizing the research so far done in the field of OCR. It provides
an overview of different aspects of OCR and discusses corresponding proposals
aimed at resolving issues of OCR.
