This book presents an approach to recognize handwritten Bengali numerals based on correlation co-efficient technique. Many Optical Character Recognition (OCR) systems are available for recognition of scanned documents but still recognition of handwritten Bengali numerals is very challenging work. Bengali number system has ten digits (0-9) having different shape and size. The main difficulties with Bengali numerals is, such digits are very curve in nature. This book would be helpful to those who are working on script OCR. At the end of the book, matlab coding is given which may be helpful to understand the basic concept of the OCR algorithm.